[MI 019-100] Universal Instruction Manual I/A Series Mass Flow ...

Instruction 

MI 019-100 

December 2003 

Universal Instruction Manual 

I/A Series® Mass Flow Products 

Models CFS10 and CFS20 Flowtubes 

and CFT50 Transmitters 

Installation and Startup 

For safety information in English, refer to the web site listed below. 

(Note: A similar sentence in other languages follows) 

Se webstedet anført nedenfor for at få sikkerhedsoplysninger på dansk. 

Ga naar het website-adres hieronder voor veiligheidsinformatie in het Nederlands. 

Suomenkielisiä turvallisuustietoja on seuraavassa WWW-sivustossa. 

Pour des informations de sécurité en français, consultez le site Web ci-dessous. 

Sicherheitshinweise in deutscher Sprache finden Sie auf der unten angegebenen Website. 

Για πληροφορίες ασφαλείας στα Ελληνικά, ανατρέξτε στο δικτυακό τόπο που 

αναγράφεται παρακάτω. 

Per informazioni riguardanti la sicurezza in italiano, fare riferimento all'indirizzo 

Web indicato sotto. 

For sikkerhetsinformasjon på norsk, se nettstedet angitt nedenfor. 

Para obter informações sobre segurança em Português, consulte o Web site listado em baixo. 

Visite nuestro sitio Web si desea obtener más información de seguridad en español. 

För säkerhetsinformation på svenska tittar du på vår webbsida på adress enligt nedan. 

www.foxboro.com/instrumentation/tools/safety/flow

MI 019-100 – December 2003

Contents 

Figures..................................................................................................................................... 

Tables.................................................................................................................................... 

Preface.................................................................................................................................... 

Reference Documents .............................................................................................................. 

v 

vii 

ix 

ix 

1. Safety Information ............................................................................................................ 1 

General Warnings ..................................................................................................................... 1 

Local Code Warning ............................................................................................................ 1 

ATEX Warning .................................................................................................................... 1 

Intrinsically Safe Warning .................................................................................................... 1 

Process Fluid Warning ......................................................................................................... 1 

Abrasive Fluid Warning ........................................................................................................ 2 

Loss of Flow Signal Warning ................................................................................................ 2 

Parts Replacement Warning ................................................................................................. 2 

CFS10 and CFS20 Mass Flowtube ............................................................................................ 3 

Flowtube Identification ........................................................................................................ 3 

Electrical Certification Rating .............................................................................................. 3 

Origin Code ......................................................................................................................... 5 

Process Wetted Parts ............................................................................................................ 5 

PED Certification ................................................................................................................ 6 

Maximum Working Pressure ................................................................................................ 6 

CFT50 Mass Flow Transmitters ................................................................................................ 8 

Transmitter Identification .................................................................................................... 8 

Electrical Certification Rating .............................................................................................. 8 

Origin Code ......................................................................................................................... 9 

Operating Temperature Limits ............................................................................................. 9 

Safety Grounding ................................................................................................................. 9 

Unused Conduit Entries ..................................................................................................... 10 

2. Installation ...................................................................................................................... 11 

Introduction ............................................................................................................................ 11 

CFS10 or CFS20 Flowtube Installation .................................................................................. 11 

Site Selection ...................................................................................................................... 11 

Mounting CFS10 or CFS20 Flowtubes .............................................................................. 11 

Threaded End Connections ........................................................................................... 13 

Flanged End Connections ............................................................................................. 13 

Sanitary Tri-Clamp Quick Disconnect End Connections .............................................. 13 

Sanitary DIN Coupling End Connections ..................................................................... 14 

Wiring Remote Transmitter to Flowtube ........................................................................... 14 

Style A Flowtubes .......................................................................................................... 14 

Style B Flowtubes .......................................................................................................... 14 

iii

MI 019-100 – December 2003 Contents 

Signal Cable Preparation ............................................................................................... 16 

CFT50 Transmitter Installation .............................................................................................. 16 

Mounting ........................................................................................................................... 16 

Positioning the Housing ..................................................................................................... 17 

Wiring ................................................................................................................................ 17 

Field Wiring .................................................................................................................. 17 

Power Wiring ................................................................................................................ 18 

Input/Output Wiring .................................................................................................... 18 

HART Multidrop Communication ............................................................................... 22 

Flowtube Wiring Connections ........................................................................................... 23 

3. Start Up........................................................................................................................... 25 

CFT50/CFS10 or CFT50/CFS20 Flowmeters ........................................................................ 25 

When to Use Quick Start Mode .............................................................................................. 25 

Steps Required ........................................................................................................................ 25 

Procedure Using Keypad/Display ............................................................................................ 26 

Procedure Using the HART Communicator ........................................................................... 28 

Index .................................................................................................................................... 29 

iv

Figures 

1 Sample CFS10 or CFS20 Mass Flowtube Identification ............................................... 3 

2 Sample CFT50 Series Mass Flowtube Identification .................................................... 8 

3 Flowtube Mounting Under Normal Conditions ......................................................... 12 

4 Flowtube Mounting in Severe Vibration Conditions .................................................... 12 

5 Recommended Types of Pipe Supports ........................................................................ 13 

6 CFS10 or CFS20 (Style B) Junction Box ..................................................................... 15 

7 Transmitter Mounting ................................................................................................. 17 

8 Accessing Field Terminals ............................................................................................ 18 

9 Field Wiring Terminal Board ....................................................................................... 18 

10 Current Output ........................................................................................................... 19 

11 Supply Voltage and Output Load ................................................................................. 20 

12 Contact Input .............................................................................................................. 20 

13 Contact Output ........................................................................................................... 21 

14 Pulse Output ................................................................................................................ 21 

15 Pulse Wiring with Divider Network ............................................................................. 22 

16 Typical Wiring Diagram (Output Signal Code 1) ........................................................ 22 

17 Typical Multidrop Network ......................................................................................... 23 

18 Junction Box Wiring .................................................................................................... 24 

19 Keypad/Display Quick Start Menu .............................................................................. 27 

20 HART Communicator Quick Start Menu ................................................................... 28 

v

MI 019-100 – December 2003 Figures 

vi

Tables 

1 Electrical Safety Specification ....................................................................................... 4 

2 Process Temperature Range in Accordance 

with Flowtube Size and Electrical Certification Code 5 

3 End Connection Process Temperature/Pressure Limits (a) ........................................... 6 

4 Flowtube Process Temperature/Pressure Limits 

Threaded End Connections (a) 7 

5 Electrical Safety Specification ....................................................................................... 8 

6 JCFS10 or CFS20 (Style B) Junction Box Wiring ........................................................ 15 

7 Input/Output Wiring Connections .............................................................................. 19 

8 Junction Box Wiring .................................................................................................... 24 

9 Operation of Function Keys ......................................................................................... 26 

vii

MI 019-100 – December 2003 Tables 

viii

Preface 

Standard documentation shipped with every I/A Series Mass Flowmeter or Mass Flow 

Transmitter is: 

♦ This Universal Instruction Manual 

♦ A CD-ROM that contains the complete documentation set. 

The Universal Instruction Manual is designed to provide the user with a single, concise, easy-touse 

manual that covers the key points needed for installation and startup of I/A Series Mass 

Flowmeters. 

For additional detailed information about each model, including dimensional prints, parts lists, 

and more detailed instructions, please refer to the CD-ROM. 

The CD-ROM contains many documents on various products. Those particularly applicable to 

current mass flow products are listed in the following table: 

Reference Documents 

Document Number 

Dimensional Prints 

DP 019-182 




Instructions 

MI 019-120 



Parts Lists 

PL 008-704 

PL 008-733 

PL 008-735 

Document Description 

CFS10 Style B Flowtube Dimensions (1/4 through 2 inch) 

CFS20 Style B Flowtube Dimensions (1-1/2 and 3 inch) 

CFS10 Style B Flowtube Dimensions (1/8 inch) 

CFT50 Transmitter Dimensions 

CFS10 and CFS20 Mass Flowtubes Installation, Startup, 

Troubleshooting, and Maintenance 

CFT50 Transmitter Installation, Startup, Configuration, and 

Maintenance 

CFT50 Transmitter Safety Connection Diagrams (FM, CSA) 

CFT50 Transmitter Parts List 

CFS10 Style B Flowtubes, Sanitary/General, Parts List 

CFS20 Style B Flowtubes, Sanitary/General, Parts List 

NOTE 

1. In addition to the documents on the CD-ROM, MI 019-179, Flow Products 

Safety Information, is available on the website listed on the title page of this 

document. 

2. Newly released products may be shipped with paper documentation until the 

information pertaining to them is included on the CD-ROM. 

ix

MI 019-100 – December 2003 Preface 

x

1. Safety Information 

General Warnings 

Local Code Warning 

! WARNING 

These products must be installed to meet all applicable local installation regulations, 

such as hazardous location requirements, electrical wiring codes, and mechanical 

piping codes. Persons involved in the installation must be trained in these code 

requirements to ensure that the installation takes maximum advantage of the safety 

features designed into these products. 

ATEX Warning 

! WARNING 

Apparatus marked as Category 1 equipment and used in hazardous areas requiring 

this category must be installed in such a way that, even in the event of rare incidents, 

the versions with an aluminum alloy enclosure can not be an ignition source due to 

impact and friction. 

Intrinsically Safe Warning 

! WARNING 

Since Invensys Foxboro does not specify live maintenance, to prevent ignition of 

flammable atmospheres, disconnect power before servicing unless the area is certified 

to be nonhazardous. 

Process Fluid Warning 

! WARNING 

If process containing parts are to be disassembled: 

1. Make sure that process fluid is not under pressure or at high temperature. 

2. Take proper precautions concerning leakage or spillage of any toxic or otherwise 

dangerous fluid. Follow any Material Safety Data Sheet (MSDS) recommendations. 

! WARNING 

These flowmeters are built using materials that are corrosion resistant to a wide variety 

of fluids. However, with aggressive fluids, a potential exists for corrosive failure. 

Therefore, verify the material compatibility with the NACE guidelines and/or user 

knowledge of the flowmeter material compatibility with the process fluid at operating 

conditions. 

1

MI 019-100 – December 2003 


Abrasive Fluid Warning 

! WARNING 

Fluids containing abrasive particles and flowing at high rates can cause significant 

wear to pipes. If these conditions exist, check the flowmeter periodically for wear. 

Loss of Flow Signal Warning 

! WARNING 

If the flowrate signal appears to have a calibration shift, check the flowmeter for 

corrosion or wear. 

Parts Replacement Warning 

! WARNING 

If replacing parts, do not use parts made of other materials or that in any other way 

change the product as described on the data plate. 

2

1. Safety Information MI 019-100 – December 2003 

CFS10 and CFS20 Mass Flowtube 

Flowtube Identification 

A typical data plate is shown in Figure 1. 

AGENCY PLATE 

DATA PLATE 

FLOW 

DIRECTION 

MAXIMUM 

PRESSURE 

MAXIMUM 

TEMPERATURE 

DATA PLATE 

AGENCY PLATE 

Figure 1. Sample CFS10 or CFS20 Mass Flowtube Identification 

Refer to the data plate to determine the maximum pressure and temperature limits. 

Electrical Certification Rating 

Electrical certification information is printed on the agency plate (located above the data plate). 

The electrical design safety code is also printed on the data plate as part of the model number. The 

location of the code within the model number is shown below. See Table 1 for additional 

information. 

CFS10-05SCMMM 

ELECTRICAL SAFETY DESIGN CODE 

3



Table 1. Electrical Safety Specification 

Testing Laboratory, 

Type of Protection, 

and Area Classification 

CSA for use in general purpose 

(ordinary) locations. 

CSA as nonincendive for use in 

Class I, Division 2, Groups A, B, 

C, and D, hazardous locations. 

FM intrinsically safe apparatus 

for Class I, Division 1, Groups C 

and D, hazardous locations. 

FM nonincendive for use in 

Class I, Division 2, Groups A, B, 

C, and D hazardous locations. 

KEMA (ATEX) Intrinsically safe 

II 2 G EEx ib IIB; Zone 1. 

KEMA (ATEX) Nonsparking 

II 3 G EEx nA II; Zone 2. 

CENELEC Intrinsically safe 

EEX ib, IIB, Zone 1 

Application Conditions 

Connect to Model CFT50 Mass Flow Transmitter. 

See Table 2. 

Connect to Model CFT50-......L, P, or S Mass Flow 

Transmitter per MI 019-133. Temperature Class in 

accordance with process temperature. See Table 2. 

Connect to Model CFT50-......K or N Mass Flow 

Transmitter per MI 019-133. Temperature Class in 


Connect to Model CFT50-......K, N, or R Mass 

Flow Transmitter per MI 019-133. Temperature 

Class in accordance with process temperature. See 

Table 2. 

Connect to Model CFT50-......M or Q Mass Flow 

Transmitter. Temperature Class T2 - T6 in 


Connect to Model CFT50-......T Mass Flow 

Transmitter. Temperature Class T3 - T6 in 


Connect to Model CFT10-....EGB/ENB or 

CFT15-....EGB/ENB Mass Flow Transmitter. 

Temperature Class in accordance with process 

temperature. See Table 2. 

Electrical 

Safety Design 

Code 

CGZ 

CNN 

FBB 

FNN 

MMM 

LLL 

EBB 

NOTE 

These flowtubes have been designed to meet the electrical safety descriptions listed 

in the table above. For detailed information, or status of testing laboratory 

approvals/certifications, contact Invensys Foxboro. 

4


Flowtube 

Model 

mm 

Origin Code 

The origin code identifies the year and week of manufacture. It is the first four characters of the 

Reference Number (REF. NO.). See Figure 1. In the example 0313, 03 identifies the year of manufacture 

as 2003, and 13, the week of manufacture in that year. 

Process Wetted Parts 

Table 2. Process Temperature Range in Accordance 

with Flowtube Size and Electrical Certification Code 

Flowtube 

Size 

CFS10 3 1/8 –130 to +180°C 

(–202 to +356°F) 

6 1/4 –200 to +180°C 

(–328 to +356°F) 

15 1/2 –200 to +180°C 

(–328 to +356°F) 

20 3/4 –200 to +180°C 

(–328 to +356°F) 

25 1 –200 to +180°C 

(–328 to +356°F) 

40 1-1/2 –200 to +180°C 

(–328 to +356°F) 

50 2 –200 to +180°C 

(–328 to +356°F) 

CFS20 40 1-1/2 –200 to +180°C 

(–328 to +356°F) 

80 3 –200 to +180°C 

(-328 to +356°F) 

in 

Process Medium Temperature Range 

for Electrical Certification Code 

CGZ, CNN, FNN, 

and LLL EBB and FBB MMM 

–130 to +180°C 

(–202 to +356°F) 

–150 to +180°C 

(–238 to +356°F) 

–200 to +180°C 

(–328 to +356°F) 

–200 to +180°C 

(–328 to +356°F) 

–50 to +180°C 

(–58 to +356°F) 

–50 to +140°C 

(–58 to +284°F) 

–50 to +140°C 

(–58 to +284°F) 

–50 to +140°C 

(–58 to +284°F) 

–50 to +140°C 

(–58 to +284°F) 

–130 to +180°C 

(–202 to +356°F) 

–200 to +180°C 

(–328 to +356°F) 

–200 to +180°C 

(–328 to +356°F) 

–200 to +180°C 

(–328 to +356°F) 

–55 to +165°C 

(–67 to +329°F) 

–55 to +165°C 

(–67 to +329°F) 

–55 to +165°C 

(–67 to +329°F) 

–55 to +165°C 

(–67 to +329°F) 

–55 to +165°C 

(–67 to +329°F) 

The flowtube wetted material is found within the model number on the data label as follows: 

CFS10-02SAMMM 

FLOWTUBE WETTED MATERIAL 

Code 

Wetted Material 

S 316L Stainless Steel 

H Hastelloy ® C-22 

C 316L Stainless Steel (as prepared for Sanitary 

Applications, 3A Authorization No. 224 

5



PED Certification 

Flanged mass flowmeters 1 1/2 in (40 mm) or larger meet PED (Harmonized Pressure Equipment 

Directive for the European Community) and have the PED notified body number (0575) marked 

close to the CE logo on the data plate. Flowmeters 1 in (25 mm) and smaller fall below the PED 

category limits and are classified as SEP and therefore do not carry a PED notified body number. 

Maximum Working Pressure 

Maximum process pressure is dependent on the process temperature, flowtube size, and end 

connections used. The following tables specify the maximum process pressure for either the the 

type of end connection (Table 3) or process temperature (Table 4). Interpolation is required for 

process temperatures between those listed. Use the lesser of the pressures determined from these 

tables. 

Table 3. End Connection Process Temperature/Pressure Limits (a) 

Process 

End Connection Type Temp. 

ANSI ® Class 150 Flange 100°F 

200°F 

300°F 

356°F 

ANSI Class 300 Flange 100°F 

200°F 

300°F 

356°F 

ANSI Class 600 Flange 100°F 

200°F 

300°F 

BS 4504 (DIN) PN 10/16 

PN 25/40 

Flange 

Flange to Mate with BS 4504 

(DIN), PN 100/2 

356°F 

40°C 

100°C 

150°C 

180°C 

40°C 

100°C 

150°C 

180°C 

MWP (b) 

316/316L ss Hastelloy C-22 

275 psig 

240 psig 

215 psig 

208 psig 

720 psig 

620 psig 

560 psig 

540 psig 

1440 psig 

1240 psig 

1120 psig 

1080 psig 

40.0 bar(c) 

34.2 bar(c) 

30.8 bar(c) 

29.3 bar(c) 

96 bar (c) 

82 bar (c) 

75 bar (c) 

72 bar (c) 

290 psig 

260 psig 

230 psig 

217 psig 

750 psig 

750 psig 

730 psig 

719 psig 

1500 psig 

1500 psig 

1455 psig 

1435 psig 

41.7 bar(c) 

37.1 bar(c) 

32.9 bar(c) 

30.6 bar(c) 

103 bar (c) 

103 bar (c) 

100 bar (c) 

98 bar (c) 

Threaded, NPT, ANSI B2.1 MWP limited by threaded end connection limits per 

Table 4. 

Sanitary (Tri-Clamp ® Ferrule Maximum working pressure is 10 bar at 25°C 

and DIN 11851) (d) (145 psig at 77°F). 

(a)Linear interpolation is acceptable. 

(b)See Model Codes for flowtube configurations available with 316 ss, 316L ss, and Hastelloy C- 

22 end connections. 

(c)To obtain MPa values, divide bar value by 10. 

To obtain kPa values, multiply bar value by 100. 

(d)If higher MWPs are required, contact Invensys Foxboro. 

6


Table 4. Flowtube Process Temperature/Pressure Limits 

Threaded End Connections (a) 

Nominal 

Flowtube Size 

Process 

Temperature 

Maximum Working Pressure (MWP) 

316/316L ss Hastelloy C-22 

mm in °C °F bar (b) psig bar (b) psig 

3 

and 

6 

1/8 

and 

1/4 

40 

100 

150 

180 


200 

300 

356 

207 

174 

156 

148 

3000 

2530 

2270 

2144 

217 

217 

213 

207 

3150 

3150 

3050 

3010 

15 

and 

20 

1/2 

and 

3/4 

40 


150 

180 


200 

300 

356 


85 

78 

75 

1440 

1240 

1120 

1080 

103 

103 


98 

1500 

1500 

1455 

1435 

(a) Linear interpolation is acceptable. 

(b)To obtain MPa value, divide bar value by 10. 

To obtain kPa value, multiply bar value by 100. 

7



CFT50 Mass Flow Transmitters 

Transmitter Identification 

A typical data plate is shown in Figure 2. 

B1EA1BT 

2A0313 

Figure 2. Sample CFT50 Series Mass Flowtube Identification 

Refer to the data plate to determine the electrical certification rating, origin code, input supply 

voltage, input power, and ambient temperature limit. 

Electrical Certification Rating 

Electrical safety design code is printed on the data plate as part of the model number. The location 

of the code within the model number is shown below. See Table 5 for additional information. 

CFT50-B1EA1A1T 

ELECTRICAL DESIGN SAFETY CODE 

Table 5. Electrical Safety Specification 





CSA nonincendive (NI) with nonincendive Temperature Class T4. 

flowtube connections for Class I, Division 2, 

Groups A, B, C, and D. 

FM nonincendive (NI) with intrinsically safe Temperature Class T4. 



Electrical 

Safety Design 

Code 

S 

K 

8


Table 5. Electrical Safety Specification (Continued) 





FM nonincendive (NI) with nonincendive 



FM explosionproof (XP) with intrinsically 

safe flowtube connections for Class I, 

Division 1, Groups C and D. 

KEMA (ATEX) nonsparking with 

nonsparking flowtube and I/O connections; 

II 3 G EEx nA [L] IIC; Zone 2. 

KEMA (ATEX) nonsparking with 

intrinsically safe flowtube connections; 

II 3(2) EEx nA [L][ib] IIB; Zone 2. 

KEMA (ATEX) flameproof with intrinsically 

safe flowtube connections; 

II 2 G EEx de [ib] IIB; Zone 1. 

Temperature Class T4. 


Connect to nonsparking flowtube 

and inputs/outputs. Temperature 

Class T4. 

Connect to intrinsically safe flowtube 

and nonsparking inputs/outputs. 


Connect to intrinsically safe 

flowtube. Temperature Class T6. 

Electrical 

Safety Design 

Code 

R 

N 

T 

M 

Q 

NOTE 

These transmitters have been designed to meet the electrical safety descriptions 

listed in the table above. For detailed information, or status of testing laboratory 

approvals/certifications, contact Invensys Foxboro. 

Origin Code 

The origin code identifies the area of manufacture and the year and week of manufacture. See 

Figure 2. In the example 2A0313, 2A means the product was manufactured in the Measurement 

and Instrument Division, 01 identifies the year of manufacture as 20031, and 13, the week of 

manufacture in that year. 

Operating Temperature Limits 

The operating temperature limits of the electronics are -20 and +60°C (-4 and +140°F). Ensure 

that the transmitter is operated within this range. 

Safety Grounding 

Ground connection of the transmitter enclosure must be connected to the potential equalizer 

system within the hazardous area per national installation standard. 

9



Unused Conduit Entries 

On Type CFT50-B1....M. the cable entry devices, conduit entries, and the closing elements of 

unused apertures shall provide a degree of ingress protection of at least IP54 according to 

EN 60529 and shall be correctly installed. 

On Type CFT50-B1....Q. the cable entry devices and the closing elements of unused apertures 

shall be of a certified flameproof type, suitable for the conditions of use and correctly installed. 

10

2. Installation 

Introduction 

An Invensys Foxboro mass flowmeter consists of a transmitter and a flowtube. The CFT50 

Transmitter is designed for use with the CFS10 or CFS20 Flowtube. 

CFS10 or CFS20 Flowtube Installation 

Site Selection 

The best method of mount your flowtube is to provide a solid common support structure that is 

free of vibration for all pipe supports. Examples of such a structure are a cement pad or I-beam. 

NOTE 

Soil or dirt surface is not a common support structure if environmental conditions 

can affect the supports. 

Mounting on a floor grating (even if a common floor) is not recommended because it is not free 

from the effects of vibration made by movement of people or from vibration inducing devices. 

If ceiling mounting is used, ensure that the overhead structure is rigid (not wood) and the 

structure is common to all pipe supports. 

If wall mounting is used, ensure that no other vibration inducing devices are mounted on or near 

the wall. Secure the piping (not the flowtube) to the wall. 

The flowtube should be isolated from large capacity pumps (especially positive displacement 

pumps) and not share the same floor structure as the pumps. 

The flowtube can be mounted horizontally, upward sloping, or vertically. However, if mounted 

vertically (as in self-draining applications), the direction of flow must be upward to minimize the 

incidence of trapped air. 

Mounting CFS10 or CFS20 Flowtubes 

It is important that you support your flowtube properly. To do this: 

♦ Place pipe supports as close to the process connection as possible [



♦ 

♦ 

♦ 

provide a minimum of 25 mm (1 in) of axial length of surface contact. “Rest type” 

supports should not be used with sanitary end connections. 

If your application has excessive vibration that could be transferred to the flowtube 

sensor, install isolation supports such as those manufactured by Stauff or Behringer. 

Position valves outside the pipe supports described above. 

For severe vibration conditions, install two supports on each side of flowtube as 

shown in Figure 4. 

FLANGED END CONNECTIONS 

FLOWTUBE 

2. Installation MI 019-100 – December 2003 

Figure 5. Recommended Types of Pipe Supports 

Before installing your flowtube, make sure that 

♦ Piping is properly aligned and that the piping ends are parallel with the flowtube ends. 

♦ The arrow on the flowtube is pointing in the direction of flow. 

♦ The flowtube fits between the connecting piping with 2 to 3 mm (1/8 inch) to spare. 

It should not be necessary to force the pipes apart to fit the flowtube in place. 

Then install your flowtube as described below. 

Threaded End Connections 

1. Apply a process compatible thread sealant to the threaded flowtube end connections. 

2. Secure the threaded pipe adapters to the flowtube threaded end connections. 

3. Secure the pipeline end of the adapters to the pipeline. 

Flanged End Connections 

1. Insert the lower mounting bolts (two for 4-hole flanges, four for 8-hole flanges). 

2. Position the gasket between the flanges. 

3. Insert the remaining mounting bolts. 

4. Add the washers and nuts to all bolts. Hand tighten. 

5. Secure the flowtube by tightening the nuts in uniform steps, working from nut to 

opposite nut. 

Sanitary Tri-Clamp Quick Disconnect End Connections 

1. Insert the seal into the flowtube end connection. 

2. Make full face contact between the flowtube end connection and the pipeline end 

connection. 

3. Position the clamp over the mating surfaces of the flowtube end connection and the 

pipeline end connection and press the clamp closed. 

13



Sanitary DIN Coupling End Connections 

1. Insert the seal into the flowtube end connection. 

2. Make full face contact between the flowtube end connection and the pipeline end 

connection. 

3. Tighten the nut on the pipeline end connection securely. 

Wiring Remote Transmitter to Flowtube 

The wiring of your flowtube must conform to local code requirements. 

! CAUTION 

Do not route signal cable close to power cables or equipment that can produce a large 

magnetic field. 

If conduit is to be used, install a watertight conduit connector and drip loop at the junction box 

(Style B) or cable entrance (Style A) to prevent collection of condensate. If conduit is not used, a 

watertight cable grip is required. Teflon® thread sealant on the connector threads is 

recommended to reduce the risk of galvanic corrosion. 

If rigid conduit is used, the length extending from the conduit fitting must not exceed 0.3 m 

(12 in). This conduit must not be subjected to additional mechanical loading or attachment. If 

additional protection is required, flexible armored sheathing is recommended. 

Style A Flowtubes 

The flowtube comes with a wide temperature range FEP insulated and jacketed 5 m (16 ft) pigtail 

signal cable connected to the flowtube. The cable can be used in temperatures up to 150°C 

(302°F). If the process temperature is below -60°C (-76°F), the cable must be enclosed. If an 

extension cable is to be connected to a Style A flowtube classified intrinsically safe, a junction box 

constructed to conform to intrinsically safe requirements, including a separation between 

conductors of at least 6 mm (0.236 in), must be used. Additionally, for European applications, 

the junction box must also have a mechanical degree of protection of at least IP54 for outdoor 

application or IP20 for indoor applications. 

Extension cable wiring supplied by Invensys Foxboro (and the optional Belden #8778 cable) is 

color coded for easy pair identification. To facilitate wire identification, ensure that the proper 

wire pairs remain twisted as the black wires are not common. Carefully match the wire pairs of 

each cable by color. Connect the two common shield wires. Ensure that all connections provide 

both electrical and mechanical integrity. Refer to MI 019-132 for CFT50 wiring instructions. 

Style B Flowtubes 

Mounted on each Style B flowtube is an electrical junction box and cover meeting NEMA ® 4X 

and IEC IP54 requirements, fitted with a 3/4 NPT female cable entrance. Contained within the 

junction box are a pair of 6-position feedthrough type screw terminal blocks (properly spaced for 

intrinsic safety) which are prewired to the flowtube. 

Signal cable is not supplied with Style B flowtubes, but must be purchased separately. Invensys 

Foxboro PVC cable (Model KFS1) can be used for most applications within an ambient 

14


temperature range of -20 to 80°C (-4 to 176°F). Invensys Foxboro FEP cable (Model KFS2) is 

suitable for ambient temperatures from -40 to 85°C (-40 to 185°F). If cable other than that 

supplied by Invensys Foxboro is installed, the use of individually shielded six twisted pair signal 

cable of 22 AWG or larger (Belden #8778) is recommended. The total cable length from 

transmitter to flowtube must not exceed 300 m (1000 ft). 

Connect the cable to the flowtube junction box per Figure 6 and Table 6. Route the paired wires 

to the proper terminal block, leaving the wire pairs twisted to facilitate wire identification. 

The normal clearance between the rear of the junction box and the flowtube case is 12.7 mm (0.5 

inch). This distance can be increased to accommodate a steam jacket or case insulation. For 

details see MI 019-120 on your CD-ROM. 

BK 

BU 

BK 

BU 

WH 

BK 

WH 

BK 

WIRE PAIRS 

TO TRANSMITTER 

BK 

GN 

BK 

GN 

BN 

BK 

BN 

BK 

WIRE PAIRS 

TO TRANSMITTER 

RD 

BK 

RD 

BK 

YE 

BK 

YE 

BK 

WIRE PAIRS 

FROM FLOWTUBE 

Figure 6. CFS10 or CFS20 (Style B) Junction Box 

Table 6. JCFS10 or CFS20 (Style B) Junction Box Wiring 

Wire Color 

Black 

Blue 

RTD 

Signal 

15



Table 6. JCFS10 or CFS20 (Style B) Junction Box Wiring 

Wire Color 

Black 

Green 

Red 

Black 

Black, Shield 

Yellow 

Black 

Brown 

Black 

White 

Signal 

RTD 

Sensor B 

Sensor A 

Driver 2 

Driver 1 

Signal Cable Preparation 

If conduit is to be used, run the unprepared end of the cable through the conduit from the 

transmitter. 

Flowtube End 

1. Cut the flowtube end of the cable to length and strip back the jacket approximately 

127 mm (4 in). 

2. Separate the twisted pair conductors from their wrappers, shields, and drain wires. 

The wire pairs should remain twisted for ease of identification. 

3. Trim the shields, wrappers, and drain wires back to the jacket interface. 

4. Strip the ends of the conductors 6 mm (1/4 in). 

Transmitter End (Customer Supplied Cable) 

Follow Steps 1, 2, and 4 above. Trim shields and wrappers back to the jacket interface. Tightly 

twist together (2 to 4 turns) the six individual twisted pair drain wires at a point close to the jacket 

interface. Trim all but one drain wire close to the twist. Solder the twisted wire area, creating a 

single drain wire. Appropriately insulate the drain wire and soldered connection to prevent 

shorting. Refer to MI 019-132 for CFT50 wiring instructions. 

CFT50 Transmitter Installation 

Mounting 

The CFT50 Transmitter remotely mounted housing is supported by a mounting bracket which 

can be attached to a surface or nominal DN 80 or 3-in vertical pipe. Mount the bracket to a 

surface using four (user supplied) 0.375 inch or M10 bolts or to a pipe using the two U-bolts 

(included). See Figure 7. 

16


HOUSING 

BRACKET BOLT SCREWS (4) 

CONNECTOR 

MOUNTING BRACKET 

SURFACE MOUNTING 

PIPE MOUNTING 

Positioning the Housing 

Figure 7. Transmitter Mounting 

The housing can be positioned at almost any angle in a horizontal plane by using one or both of 

two procedures. First, the housing can be rotated up to 270° in either direction in 90° increments 

by removing the four screws securing the housing to the connector. Second, the housing can be 

rotated by loosening the bracket bolt and turning the housing with respect to the mounting 

bracket. See Figure 7. 

Wiring 

Field Wiring 

To access the transmitter field terminals, remove the field terminal compartment cover by turning 

it counter-clockwise using the cover tool provided. The field terminal compartment cover is the 

one closest to the conduit openings. When replacing the cover, tighten until the cover meets the 

housing metal-to-metal. 

17



COVER TOOL 

CONDUIT OPENINGS 

FIELD TERMINAL 

COMPARTMENT COVER 

Figure 8. Accessing Field Terminals 

Wire entrance is per two PG20 conduit openings as shown in Figure 8. The top entrance is for 

power; the bottom, for inputs and outputs. Optional 1/2 NPT and 3/4 NPT cable glands are 

available for use with these conduit openings. 

The field wiring terminal board is shown in Figure 9. 

LINE POWER 

NEUTRAL POWER 

POWER 

SIGNALS 

12 

11 

4.2 

4.1 

4 

6 

5 

GROUND 

Power Wiring 

Figure 9. Field Wiring Terminal Board 

The field wiring terminal board is shown in Figure 9. Connect the line power wire to 

Terminal 12, the neutral power wire to Terminal 11, and the ground wire to the separate ground 

terminal. 

Input/Output Wiring 

The maximum length of signal wires for HART ® communication is 3050 m (10,000 ft). It is 

1525 m (5000 ft) in multidrop mode. 

Input/Output connections depend on the output signals that were specified for your particular 

transmitter. The output signals available for your transmitter can be determined from the model 

number on your transmitter data plate as follows: 

CFT50-1EA#BK 

Output Signal Code 

18


Output 

Signal 

Code 

Terminal 

5 

Table 7. Input/Output Wiring Connections 

Terminal 

6 

Terminal 

4 

Terminal 

4.1 

Terminal 

4.2 

1 

Contact Input Pulse Output Contact Output 

2 Contact Input Current Output 2 Contact Output 

C 

Current 

Current Output 2 Contact Input Pulse Output 

Common Output 

D 

1 

Current Output 2 Current Output 3 Pulse Output 

E 

Current Output 2 Current Output 3 Contact Input 

F 

Current Output 2 Current Output 3 Contact Output 

NOTE 

The CFT50 Transmitter output circuits are externally powered. The most common 

power supply voltage is 24 V dc. 

Current Outputs 

A wiring diagram for a Current Output is shown in Figure 10. 

POSITIVE POWER INPUT 

TERMINAL (5) 

+ – 

24 V DC 

CURRENT OUTPUT 

TERMINAL (6, 4, OR 4.1) 

LOOP 

+ 

LOAD* – 

*FOR EXAMPLE, AI MODULE 

Figure 10. Current Output 

The loop load vs voltage relationship is: 

R MAX = (V-10)/0.0205. 

A minimum of 10 V must be maintained across the transmitter terminals for proper operation. 

To determine the maximum loop load resistance, add the series resistance of each component in 

the loop, excluding the transmitter. 

Figure 11 shows the output load vs voltage relationship from 10 to 24 volts. 

19



MIN. LOAD 

WITH HART 

COMMUNICATOR 

LOOP LOAD RESISTANCE 

(ohms) 

683 

400 

250 

0 

0 5 10 15 20- 24 

SUPPLY VOLTAGE (V dc) 

NOTE 

1. CURRENT OUTPUT 1 MUST HAVE A 

MINIMUM LOAD OF 250 Ω WHEN A 

HART COMMUNICATOR IS USED. 

2. MAX. LOAD = (V-10)/0.0205 

Figure 11. Supply Voltage and Output Load 

Example 

For a supply voltage of 24 V dc, the loop load resistance can be any value from 250 to 

683 Ω (0 to 683 Ω without a HART Communicator). 

Contact Input 

A wiring diagram for a Contact Input is shown in Figure 12. 



+ – 

24 V dc 

CONTACT INPUT 

TERMINAL (4, 4.1, or 4.2) 

+ 

CONTACT* 

– 

*For example, DO Module 

Figure 12. Contact Input 

The voltage requirement for a contact input is 24 V dc ±10%. The maximum current is 15 mA. 

Contact Output 

The voltage requirement for contact output is 24 V dc ±10%. The load requirement is governed 

by producing a maximum current of 100 mA. 

20


A wiring diagram for a Contact Output is shown in Figure 13. 



+ – 

24 V dc 

CONTACT OUTPUT 

TERMINAL (4.2) 

+ 

LOAD* 

– 

*For example, lamp, relay, coil 

Figure 13. Contact Output 

The voltage requirement for contact output is 24 V dc ±10%. The load requirement is governed 

by producing a maximum current of 100 mA. 

Pulse Output 

A wiring diagram for a Pulse Output is shown in Figure 14. 



+ – 

24 V dc 

PULSE OUTPUT 

TERMINAL (4.1 OR 4.2) 

+ – 

RECEIVER* 

*For example, Model 75 Totalizer 

300 Ω 

Figure 14. Pulse Output 

The maximum pulse current is 80 mA. This requires a minimum 300 Ω pulse load resistor. In 

connecting your pulse loop, always place the pulse load resistor at the receiver. 

Higher pulse output frequencies require a minimum load. 

Sometimes a resistor divider is required because of the bias current of the receiver input. Refer to 

Figure 15. In such cases, the bias current times R2 must be less than the maximum low input 

threshold of the receiver. 

21





PULSE OUTPUT 

TERMINAL (4.1 OR 4.2) 

R1 

200 Ω 

2 W 

R2 

100 Ω 

2 W 

+ – 

24 V dc 

3 kΩ 

12 V 

I Bias 

RECEIVER 

Figure 15. Pulse Wiring with Divider Network 

For example: 

For a receiver with V (high) = 8 - 24 Volts, 

V (low) = 1 Volt Maximum, and 

Impedance = 3 kΩ to 12 V 

Vin (low) with single resistor of 300 Ω = (12)(300/3300) = 1.09 V which is too high 

Vin (low) with divider network = (12)(100/3100) = 0.39 V which is acceptable. 

Combination of Outputs 

A typical wiring diagram for Output Signal Code 1, which contains all of the above, is shown in 

Figure 16. 

CONTACT OUTPUT 

PULSE OUTPUT 

4.2 

4.1 

LOAD 

LOAD 

CONTACT INPUT 

CURRENT OUTPUT 

4 

6 

LOAD 

COMMON 

Figure 16. Typical Wiring Diagram (Output Signal Code 1) 

The power supply voltage is limited to the most restrictive requirements of the outputs used. 

HART Multidrop Communication 

5 

+ – 

24 V dc 

“Multidropping” refers to the connection of several transmitters to a single communications 

transmission line. Communications between the host computer and the transmitters takes place 

digitally with the analog output of the transmitter deactivated. With the HART communications 

22


protocol, up to 15 transmitters can be connected on a single twisted pair of wires or over leased 

telephone lines. 

The application of a multidrop installation requires consideration of the update rate necessary 

from each transmitter, the combination of transmitter models, and the length of the transmission 

line. Multidrop installations are not recommended where Intrinsic Safety is a requirement. 

Communication with the transmitters can be accomplished with any HART compatible modem 

and a host implementing the HART protocol. Each transmitter is identified by a unique address 

(1-15) and responds to the commands defined in the HART protocol. 

Figure 17 shows a typical multidrop network. Do not use this figure as an installation diagram. 

Contact the HART Communications Foundation, (512) 794-0369, with specific requirements 

for multidrop applications. 

HOST 

MODEM 

LOAD 

POWER 

SUPPLY 

CFT50 

CFT50 

CFT50 

Figure 17. Typical Multidrop Network 

The HART Communicator can operate, configure, and calibrate your transmitters with HART 

communication protocol in the same way as it can in a standard point-to-point installation. 

NOTE 

CFT50 transmitters with HART communication protocol are set to poll address 0 

at the factory, allowing them to operate in the standard point-to-point manner with 

a 4 to 20 mA output signal. To activate multidrop communication, the transmitter 

address must be changed to a number from 1 to 15. Each transmitter must be 

assigned a unique number on each multidrop network. This change deactivates the 

4 to 20 mA analog output. 

Flowtube Wiring Connections 

Flowtube wiring connections at the transmitter junction box are shown in Figure 18 and Table 8. 

The distance between the flowtube and the transmitter can be up to 305 m (1000 ft). 

Invensys Foxboro cable (Model KFS1 for PVC insulated cable or Model KFS2 for FEP insulated 

cable) from the flowtube is dressed and ready for connection to the transmitter. However, to 

facilitate wire identification, ensure that the proper wire pairs remain twisted as the black wires are 

not common. 

23



1 2 3 4 5 6 7 8 9 10 1112 

Figure 18. Junction Box Wiring 

Table 8. Junction Box Wiring 

Terminal Wire Color Signal 

1 Black 

RTD 

2 Blue 

3 Black RTD 

4 Green 

5 Red 

Sensor B 

6 Black 

7 Black, Shield 

Sensor A 

8 Yellow 

9 Black 

Driver 2 

10 Brown 

Driver 1 

11 Black 

12 White 

24

3. Start Up 

CFT50/CFS10 or CFT50/CFS20 Flowmeters 

The CFT50 Transmitter can be configured with a HART Communicator or with the 

keypad/display option. With either option, two configuration menus exist, Quick Start and 

Setup. Most basic applications can be configured in Quick Start mode. 

When to Use Quick Start Mode 

Quick Start mode can be used for applications requiring only: 

♦ 

♦ 

Mass flow measurements (in lb/m) 

Current output 

♦ Positive flow direction. 

Use Setup mode that is fully described in MI 019-132, for applications involving: 

♦ 

♦ 

♦ 

♦ 

♦ 

Volume flow or density measurements 

Mass flow units other than lb/m 

Pulse or Contact Output 

Alarm or Totalizer functions 

Reverse or bidirectional flow. 

Steps Required 

1. Obtain the flowtube constants from the flowtube data label (or calibration sheet 

shipped with your flowtube). 

2. Mount the flowtube and transmitter (see “Mounting” on page 16). 

3. Install wiring: power to transmitter, flowtube to transmitter, transmitter input/output 

wiring (see “Wiring” on page 17). 

4. Enter flow and density constants into the transmitter using the Quick Start menu. 

5. Apply flow for 5 to 10 minutes. 

6. Create zero flow by closing block valves to ensure no fluid movement. 

7. Zero the flowmeter using the Quick Start menu. 

8. Enter upper and lower range values into the transmitter using the Quick Start menu. 

9. Flowmeter is up and running. 

25


3. Start Up 

Procedure Using Keypad/Display 

Operation is accomplished via four multi-function keys. They operate as shown in Table 9. 

Key 

Left Arrow (ESC) 

Right Arrow (ENTER) 

Up Arrow (BACK) 

Down Arrow (NEXT) 

Table 9. Operation of Function Keys 

Function 

Moves left in the menu structure. 

Moves the cursor to the left in a data entry field. 

Escapes from changes in a picklist menu or data entry.* 

Answers No. 

Moves right in the menu structure. 

Used to access the data entry edit mode of a parameter. 

Moves the cursor to the right in a data entry field. 

Enters and saves the changed menu picklist choices or data entry.* 

Answers Yes. 

Moves upward in the menu structure or a picklist menu. 

Moves downward in the menu structure or a picklist menu. 

*On data entry, repeatedly press the key until the cursor reaches the end of the display. 

The Keypad/Display Quick Start menu is shown in Figure 19. 

1. Press the Left arrow key until the display reads 1 MEASURE and follow the menu 

using the keys as explained in Table 9. 

2. Go to 3 FC1, press the Enter key to access edit mode, and enter your first flow 

constant. Then enter the others. 

3. Go to 3 DC1, press the Enter key to access edit mode, and enter your first density 

constant. Then enter the others. 

4. Apply flow to your flowmeter for 5 to 10 minutes. 


6. Go to 3SETZERO. Press the Enter key to start the zeroing process. The display reads 

BUSY until the process is finished and then reads DONE. Press the Down arrow key 

to display the new zero value (3 VALUE). You can then change that value using the 

Left/Right and Up/Down arrow keys as explained in Table 9. Alternatively, you can 

press the Down arrow key to display RESTORE. Pressing the Enter key at this point 

restores the factory default zero value. 

7. Go to 2 MA URV and enter your upper range value. 

8. Go to 2 MA LRV and enter your lower range value. 

9. Go to 2 FLOWCON. Press the Left arrow key to go to ONLINE. Pressing the Enter 

key to answer Yes takes you to 1 QSTART. Press the Up arrow key to go to 

1 MEASURE and the Left arrow key to return to Measure mode. 

26

3. Start Up MI 019-100 – December 2003 

1MEASURE 

1 QSTART PASSWORD OFFLINE 

2 FLOWCON 3 FC1 

ONLINE 

3 FC2 

3 FC3 

3 NOMCAP 

2 DENSCON 3 DC1 

3 DC2 

3 DC3 

3 DC4 

2 FLOWZER 3 SETZERO 

3 VALUE 

2 MA1 URV 

3 RESTORE 

2 MA1 LRV 

Figure 19. Keypad/Display Quick Start Menu 

27


3. Start Up 

Procedure Using the HART Communicator 

The HART Communicator Quick Start Menu is shown in Figure 20. 

1. Go to 2 Online. 

2. Go to 2 Quick Start. 

3. Go to 1 Flow Constants and enter your flow constants. 

4. Go to 2 Density Constants and enter your density constants. 

5. Apply flow to your flowmeter for 5 to 10 minutes. 


7. Go to 3 Flow Zero and zero your flowmeter. 

8. Go to 4 URV and enter your upper range value. 

9. Go to 5 LRV and enter your lower range value. 

2 Online 

1 Measure 

2 Quick Start 1 Flow Constants 

2 Density Constants 

3 Flow Zero 

4 URV 

5 LRV 

Figure 20. HART Communicator Quick Start Menu 

28

Index 

C 

CFS10 or CFS20 Flowtubes 

Mounting 11 

Site Selection 11 

Wiring Remote Transmitter to Flowtube 14 

CFT50 Transmitter 

Field Wiring 17 

Input/Output Wiring 18 

Mounting 16 

Positioning the Housing 17 

Power Wiring 18 

I 

Installation 11 

CFS10 or CFS20 Flowtube 11 

CFT50 Transmitter 16 

M 

Mounting 

CFS10 or CFS20 Flowtubes 11 


S 

Safety Information 1 

W 

Warnings 1 

Wiring 

CFS10 or CFS20 Flowtubes 14 


29

MI 019-100 – December 2003 Index 

33 Commercial Street 

Foxboro, MA 02035-2099 

United States of America 

www.foxboro.com 

Inside U.S.: 1-866-746-6477 

Outside U.S.: 1-508-549-2424 

or contact your local Foxboro 

representative. 

Facsimile: 1-508-549-4999 

Invensys, Foxboro, and I/A Series are trademarks of Invensys plc, its subsidiaries, and affiliates. 

All other brand names may be trademarks of their respective owners. 

Copyright 2003 Invensys Systems, Inc. 

All rights reserved 

MB 100 Printed in U.S.A. 1203

[MI 019-100] Universal Instruction Manual I/A Series Mass Flow ...

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