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...

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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), Propane (C3H8) jet fuel vapours). Specify target gas at time of order.
The AST-INI detects Nitrous Oxide (N2O)

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.

Specifications

Target Gas

Gas Sensors

Carbon dioxide (CO2), Hydrocarbons, Methane (CH4), jet fuel vapours, Nitrous oxide

Mechanical

Enclosure

Water/dust tight

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

Certifications

Conforms to

EMC Standards EN550022-10-A and EN550022-3-A

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 hydrocarbons, methane (CH4) or jet fuel vapours sensor (0 - 100% LEL range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure

AST-INI-EW

Infrared nitrous oxide (N2O) sensor (0 - 1,000 ppm / 0.1% volume range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust corrosion resistant polycarbonate enclosure

Factory Option

PUM-4-N

Splash Guard, factory installed