Detcon Model IR-622 sensors are non-intrusive “Smart” sensors designed to detect and monitor Combustible Hydrocarbons over the range of 0-100% LEL (lower explosive limit).
The sensor assembly consists of a miniature infrared optical sensor in a stainless steel housing that includes a splashguard with integral cal port, a plug-in control transmitter circuit, a base connector board and an explosion proof enclosure.
CSA and UL Approved: Class I, Division 1, Groups B, C, & D
Compatible with PLCs, SCADA, DCS, via 4-20 mA, and/or RS-485, and/or alarm relays
Sensor status and parameters accessible via RS-485 (Modbus™)
Menu programmable relays standard (two alarms plus fault)
Simple menu driven calibration - takes less than 3 minutes
Backlit LCD and LED indicators for FAULT and CAL status Unique miniature field-replaceable optical sensor
Plug-in field-replaceable transmitter
Low power consumption
5-year expected sensor life
Non-dispersive Infrared Optical (NDIR)
0-100% (lower explosive limit) LEL
±3% full scale 0-50% LEL
±5% full scale 50-100% LEL Response/Clearing Time T90 <30 seconds
<5% per year
-40°F to +167°F; -40°C to +75°C
0-99% RH non-condensing
Linear 4-20 mA DC
RS-485 Modbus™ 3 Relays (alarm 1, alarm 2, & fault) Contacts rated 5 amps
22.5-28 VDC
<3 watts @ 24 VDC
Explosion proof
Class I, Division 1, Groups B, C, D
NEMA 4X, IP66
CSA/NRTL (US OSHA Certified)
NEMA 4X, IP66
Sensor: 5 year warranty pro-rated Transmitter: 2 year warranty
