• Compatible with Automatic Remote Gas Calibrator
  • Event logging
  • HART and Modbus communications
  • 4-20 mA analog current output
  • Warning, Alarm & Fault Relays

• Calibration, Calibration Check, and Setup Modes

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The Model Ultra IR800 Infrared (IR) Point Detector is a microprocessor-based combustible gas detector that continuously monitors combustible gases in lower explosive limit (LEL) range. Ultra IR800 is housed in an explosion-proof enclosure complete with status display, which consists of three high-brightness nixie tubes and four status indicators for gas concentration readings and status conditions. This IR point detector provides various output interfaces which includes 4-20mA current output, three sets of Normally Open Contact for Warning/Alarm/Fault status, two sets of communication interfaces for RS485 and HART interfaces.


Sensor Type:

Continuous diffusion, NDIR

Sensor Life:

5 years typical

Measuring Ranges:

0-100% LEL

Accuracy :

±2% LEL from 0- 50% LEL;

±5% LEL from 50-100% LEL

Response Time:

T90 <5 s with 100% LEL

methane applied

Zero Drift:

Less than 2% of full scale per year


Calibration, gas check, setup

Gas Setting:


Display Type:

LED Displays

Electrical Classification:

ATEX II 2G Ex db IIC T6 Gb

( Tamb = -40°C to +70°C )

II 2G Ex db IIC T5 Gb

( Tamb = -40°C to +85°C )

II2D Ex tb IIIC T100°C Db IP66

SIL 2 Certified


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