AST-I Industrial Infrared Transmitters

    Key Features

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    Low power consumption
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    Dual temperature compensated pyroelectric infrared detectors
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    Fast response with accurate low-level gas detection
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    Long sensor life
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    Water / dust tight / corrosion resistant polycarbonate enclosure
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    Linear analog (4-20 mA) output
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    Target gases include CO2, Hydrocarbons (including Methane), Nitrous Oxide
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    RoHS compliant circuit boards
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 hydrocarbon - methane (CH4).
 
The AST-INI detects nitrous oxide (N2O) up to 1,000 ppm range.
 
Care should be taken to not spray the sensor head. The sensor vent opening has a microporous PTFE filte attached which provides splash protection only, it is not designed to provide protection from the application of pressurized water.

APPLICATIONS

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    Commercial Buildings
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    Institutional Buildings
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    Waste Water Treatment Plants
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    Oil & gas plants
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    Manufacturing Plants
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    and many more

Gas Types

Carbon Dioxide (CO2)
Hydrocarbon gases (HC): including Methane (CH4)
Nitrous Oxide (N2O)

Sensors

Mechanical

AST-ICD, AST-IHC & AST-INI Industrial Analog Transmitters
Enclosure: Water/dust tight, corrosion resistant polycarbonate
Weight: 255 g (9 oz)
Size: 4.9" x 4.9" x 2.9" (125 mm x 125 mm x 74 mm)

Electrical

Power Requirement: 24 VDC nominal (12 - 30 VDC)
(polarity protected) 5 W maximum
Current Draw: 70 - 100 mA
Outputs: Linear 4 - 20 mA analog
(10 bit resolution with current limit)
Fuse: 500 mA anti-surge in-line fuse for supplied power

Input / Output


User Interface


Environmental

Operating Temperature: -20°C to 50°C (-4°F to 122°F)
Humidity: 0 - 95% RH non-condensing


Note: Measurements above are sensor dependent.

Certifications


More Brochures

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CETCI Product Family BrochureTransmitters Brochure

Product Specifications

Application Brochures

Quick Application Guide
Quick Application Guide For Fixed Gas Detection SystemsFor Fixed Gas Detection Systems

Drawings

Software

Sensor Specification

Engineering Specification Samples


DataSheets

Operation Manual

AST–I Industrial Infrared Transmitters

Description Code
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-BW
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-CW
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-ICD-DW
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-BW
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  AST-IHC-CW
Infrared nitrous oxide (N2O) sensor (0 – 1,000 ppm range), 4 - 20 mA output, 24 VDC nominal (12 - 30 VDC), water / dust tight corrosion resistant polycarbonate enclosure  AST-INI-EW

Metal Protective Guard

» 16 gauge, clear anodized metal protective guard
» Larger size for controllers & self-contained systems
» Smaller size for analog & digital transmitters

Calibration Kit

» Commonly used tools required for calibration in one convenient toolbox
 


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