AST-ICD & AST-IHC Industrial Infrared Transmitters

For monitoring: Carbon dioxide, Hydrocarbons, Methane and jet fuel vapours

Industrial, high quality analog gas detectors with dual beam, miniature infrared gas sensors

Applications

  • Commercial Buildings
  • Institutional Buildings
  • Waste Water Treatment Plants
  • Oil & Gas Plants
  • Manufacturing Plants
  • and many more...

Key Features

  • Single sensor
  • Low power consumption
  • Dual temperature compensated pyroelectric infrared detectors
  • Fast response with accurate low-level gas detection
  • Long sensor life
  • Water / dust tight / corrosion resistant polycarbonate enclosure
  • Linear analog (4 - 20 mA) output

Description

The AST-I series of analog transmitters are high quality, industrial, dual beam, referenced transmitters with miniature infrared sensors, analog output and water / dust tight, corrosion resistant, non-metallic enclosures..

The AST-ICD detects carbon dioxide (CO2) with a choice of one of three different ranges.
The AST-IHC detects hydrocarbons, methane (CH4) and jet fuel vapours.

Care should be taken to not spray the sensor head in wet environments. The sensor vent opening has a microporous PTFE filter attached which provides splash protection only, it is not designed to provide protection from the application of pressurized water.

Target Gas
Gas Sensors
Carbon dioxide (CO2), Hydrocarbons, Methane (CH4), jet fuel vapours
Mechanical
Enclosure
Water / dust tight, NEMA 4, IP66, corrosion
Resistant ABS with hinged, secure door
Copper coated interior to reduce RF interference
Weight
244 g (8.6 oz)
Size
165 x 156 x 92 mm / 6.5 x 6.125 x 3.625 inches
User Interface
Display
4 digit, 7 segment LCD
Adjustments
4 internal push buttons for servicing
Input/Output
Output
Linear 4 - 20 mA analog (10 bit resolution with current limit)
Electrical
Power Requirement
24 VDC nominal (12 - 30 VDC) (polarity protected) 5 W maximum input
Current Draw
70 - 100 mA
Wiring
3-conductor, 16 to 20 AWG stranded, shielded
Fuses
500 mA slow blow glass fuse
Environmental
Operating Temperature
-20°C to 50°C (-4°F to 122°F)
Operating Humidity
0 - 95% RH non-condensing
Product Codes
AST-ICD-BW
Infrared carbon dioxide (CO2) sensor (0 - 5% volume range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure 
AST-ICD-CW
Infrared carbon dioxide (CO2) sensor (0 - 100% volume range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure 
AST-ICD-DW
Infrared carbon dioxide (CO2) sensor (0 - 20% volume range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust corrosion resistant polycarbonate enclosure 
AST-IHC-BW
Infrared hydrocarbon gas (CH4) sensor (0 - 100% LEL range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure 
AST-IHC-CW
Infrared hydrocarbon gas (CH4) sensor (0 - 100% volume range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure 

Options, Accessories and More...