Process Unit 73 LF - Knick

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Process Unit 73 LF Concentration Determination You can only make use of concentration determination if your unit is equipped with option 359, 360 or 382. Without these options, the menu reads “Concentration (Optional)”. The line cannot be selected. The Process Unit 73 LF determines the substance concentration from the measured conductivity and temperature values in percentage by weight (% by wt.) for H 2 SO 4 , HNO 3, HCl (Opt. 359) or HCl, NaOH, NaCl (Opt. 382) (with option 360: customer-specific substance mixtures). Requirements for Concentration Determination The following conditions (among others) are required for reliable concentration determination: For calculation of concentration, the medium being measured must be a purely binary mixture (e.g. water / hydrochloric acid). Presence of other dissolved substances (e.g. salts) leads to incorrect concentration values. In the region of small slopes (e.g. at the range limits) small conductivity changes can correspond to great concentration changes. This might lead to an unsteady display of the concentration value. Since the concentration value is calculated from the measured conductivity and temperature values, accurate temperature measurement is very important. Therefore, you should make sure that cell and process medium are in thermal equilibrium. Especially for concentration determination, you should adjust the temperature probe to increase accuracy (see page 4–5). 9–24 Capabilities
How to set the parameters for concentration determination Open a Parameter Setting menu, select ”Concentration” using and confirm with . Press or to select the solution and confirm your choice with . Press or to select the concentration range and confirm your choice with . Concentration Alarm You can define limits for warning and failure messages for the concentration value (see page 9–27). Open the ”Alarm Settings” submenu, select ”Concentration Alarm” using and confirm with . Enter the warning and failure limits using scrolling and cursor keys (see page 2–5) and confirm your entries with . Concentration determination disabled Only if concentration alarm is enabled, the range limits (0 – 100 %) for concentration determination of the Process Unit 73 LF are also monitored. If you have a unit with option 359, 360 or 382 but do not make use of concentration determination, you should turn off concentration alarm, since otherwise certain conductivity values (e.g. > 800 mS/cm) would generate the error message “Failure Concentration”. Capabilities 9–25
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Instruction Manual Process Unit 73
Page 3 and 4:
Changes for Software Release 6 Proc
Page 5 and 6:
Safety Information Be sure to read
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Information on Electromagnetic Comp
Page 9 and 10:
The representation of a menu in thi
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Contents Safety Information . . . .
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9 Capabilities of the Process Unit
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1 Overview of the Process Unit 73 L
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vanic isolation optional) allows li
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2 Operating the Process Unit 73 LF
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Control Elements Pressing menu key
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How to select a menu item Press scr
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How to keep the old setting Pressin
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3 Diagnostics Menu What you can do
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How to enter the point of measureme
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Device Diagnostics What you can do
Page 33 and 34: 4 Maintenance Menu What you can do
Page 35 and 36: Resistance Measurement Press and
Page 37 and 38: Temperature Probe Adjustment This f
Page 39 and 40: 5 Viewing Level What you can do on
Page 41 and 42: 6 Calibration Why do you have to ca
Page 43 and 44: How to select a calibration sequenc
Page 45 and 46: Automatic Calibration with Standard
Page 47 and 48: Calibration by Manual Entry of Cond
Page 49 and 50: Calibration by Entry of Premeasured
Page 51 and 52: With TC correction T ref = 25 °C W
Page 53 and 54: 7 Operator Level What you can do on
Page 55 and 56: 8 Administrator Level Before commis
Page 57 and 58: An Example You want to change the s
Page 59 and 60: How to set the administrator passco
Page 61 and 62: 9 Capabilities of the Process Unit
Page 63 and 64: Pt 100/ Pt 1000/ Ni 100 Process Uni
Page 65 and 66: wt pk bn gy bu gn rd yw Shi
Page 67 and 68: Conductivity Measurement using ZU 0
Page 69 and 70: Sensor cable Terminal box ZU 0307 E
Page 71 and 72: Sensor cable Terminal box ZU 0307 g
Page 73 and 74: Calibration Solution for Automatic
Page 75 and 76: Manual Temperature Compensation Man
Page 77 and 78: How to define temperature compensat
Page 79 and 80: Trilinear Output Curve output curre
Page 81 and 82: 2nd Current Output If your unit is
Page 83: 100 Trilinear (Bilinear) Curve (fal
Page 87 and 88: Complete Installation using all Fun
Page 89 and 90: NAMUR Contacts The three NAMUR cont
Page 91 and 92: During calibration the limit contac
Page 93 and 94: In measuring mode the present value
Page 95 and 96: Output 2 can be used to control val
Page 97 and 98: The information text shows the cont
Page 99 and 100: ÍÍÍÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍ
Page 101 and 102: Error Messages for Controller Setti
Page 103 and 104: How to set the current input parame
Page 105 and 106: Cleaning: The contact ”cleaning
Page 107 and 108: How to set the rinsing cycle parame
Page 109 and 110: Remote Interface Operation You can
Page 111 and 112: How to set the interface parameters
Page 113 and 114: 10 Information on Mounting and Inst
Page 115 and 116: front removable for instrument inst
Page 117 and 118: Installation Installation of the Pr
Page 119: Maintenance and Cleaning The Proces
Page 122 and 123: Process Unit 73 LF Error Message (D
Page 124 and 125: Process Unit 73 LF According to Int
Page 126 and 127: Process Unit 73 LF 11-6 Error Messa
Page 128 and 129: Process Unit 73 LF Output Current 1
Page 130 and 131: Process Unit 73 LF Transmission beh
Page 132 and 133: Process Unit 73 LF STATUS Commands:
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Process Unit 73 LF Device Diagnosti
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Process Unit 73 LF Clock RPRTM WPRT
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Process Unit 73 LF WPDISLAI1 Displa
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Process Unit 73 LF RPTOMA WPTOMA0 W
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Process Unit 73 LF Output Current 1
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Process Unit 73 LF Output 2/Control
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Process Unit 73 LF Limit Contacts/C
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Process Unit 73 LF RPCIBV WPCIBVp R
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Process Unit 73 LF Current Input RP
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Process Unit 73 LF Automatic Device
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Process Unit 73 LF Digital Controll
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Process Unit 73 LF Interface Bus Pr
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Process Unit 73 LF 4th Field: CRC16
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Process Unit 73 LF Interface Bus Pr
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Process Unit 73 LF Mounting Accesso
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Process Unit 73 LF Display Display
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Process Unit 73 LF Cells Model SE 6
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Process Unit 73 LF Model ZU 0071*)
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Process Unit 73 LF cable length app
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Process Unit 73 LF 1 Observe instal
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Process Unit 73 LF connector plug W
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Process Unit 73 LF [mS/cm] 1,200 H
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Process Unit 73 LF 700 [mS/cm] Sal
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Process Unit 73 LF Sodium Chloride
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Process Unit 73 LF EPROM Replacemen
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Process Unit 73 LF 16-4 Appendix
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Process Unit 73 LF conductance cond
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Process Unit 73 LF Parameter Settin
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Process Unit 73 LF cell, SE 603 app
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Process Unit 73 LF limit contacts/c
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Process Unit 73 LF viewing angle ad
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Process Unit 73 LF - Knick

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