Combustible Gas - Axiom-Northwest
Combustible Gas - Axiom-Northwest
Combustible Gas - Axiom-Northwest
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Technical Specifications<br />
GENERAL<br />
Sensor Type_____________ Non-dispersive infrared<br />
Detection Range ________ See “Ordering Information”<br />
Linearity ________________ ± 2% below 40% full scale<br />
± 5% from 40% to 110% full scale<br />
Repeatability ____________ ± 2% below 40% full scale<br />
± 5% from 40% to 110% full scale<br />
Response Time __________ T90 < 5 seconds (without<br />
rainshield)<br />
Start Up Time ___________ 30 seconds<br />
Self-Diagnostic Test ____ 2x per second<br />
Calibration ______________ Span: none (factory set)<br />
Zero: every 3 to 6 months<br />
User Interface ___________ Non-intrusive via magnet<br />
Display__________________ 4 digit LCD with user-adjustable<br />
contrast. Numeric display of gas<br />
concentration and faults; icons<br />
for alarms, lock, and inhibit<br />
Weight __________________ 6.5 lbs (3.0 kg)<br />
Warranty ________________ 2 years<br />
OUTPUTS<br />
Analog __________________ Isolated, 4-20mA, max loop load<br />
900ohms at 24 VDC (current<br />
source or sink)<br />
Programmable Fault_____ 2.4 to 4.0mA<br />
Programmable Inhibit ___ 1.5 to 20.0mA<br />
Programmable Loop Test 1.0 to 20.0mA<br />
Digital __________________ RS/485 or RS/232 using Modbus<br />
RTU or Modbus ASCII protocol<br />
Relay (optional) _________ 3 SPST relays (2 concentration, 1<br />
fault), 5A at 250 VAC. Userselectable<br />
latching/nonlatching,<br />
energized/de-energized, set/reset<br />
delay, and set/reset point<br />
ELECTRICAL<br />
Input Voltage____________ 18-27VDC<br />
Power Consumption ____ 3.1W, nominal / 6.0W, max<br />
Connections ____________ 3 wires or 4 wires (with RS/485 or<br />
RS/232 configuration ); 18-22<br />
AWG nominal<br />
RFI/EMI __________________ certified to EN50082-1<br />
ENVIRONMENTAL<br />
Operating Temp _________ -40°F to 140°F (-40°C to 60°C)<br />
Operating Humidity _____ 0 to 100% RH<br />
Installation Drawings<br />
Electrical<br />
Dimensions<br />
Bump Test Adaptor<br />
P/N 096-2289<br />
A(-)<br />
B(+)<br />
ENCLOSURE<br />
Enclosure Material ______ Copper-free cast aluminum, baked<br />
epoxy finish<br />
Optical Bench Material __ Stainless steel or electroplated<br />
aluminum<br />
APPROVALS<br />
Enclosure _______________ Explosion proof; UL/FM/CSA, Class<br />
1 Group B,C,D / Class 2, Group E, F<br />
/ Class 3, NEMA-4X, NEMA-7B, C,D;<br />
NEMA-9 E,F,G; IP66<br />
System __________________ ETL listed to UL2279 and UL3111-1<br />
(Class 1, Div 1, Group B,C,D ),<br />
CE Marked<br />
CSA approved to Class 1, Zone<br />
1,Groups IIB+H2;Class I, Groups<br />
E,F,&G; Class III<br />
CENELEC approved to EExd[ib] IIc T6<br />
Represented by:<br />
Toll Free US and Canada<br />
1-800-872-8008<br />
251 Welsh Pool Rd., Exton, PA 19341<br />
(PH) 610-363-5450 • (FAX) 610-363-0167<br />
(email) info@scottinstruments.com<br />
(WEB) www.scottinstruments.com<br />
or<br />
DS-4688-IR 08-02
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