Transmetteur de gaz Industriel

Critical Environment Technologies - AST-I

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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 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.

Features:

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
Target gases include CO2, Hydrocarbons (including Methane),Nitrous Oxide
RoHS compliant circuit boards

Specifications:

Gas Type	Carbon Dioxide (CO2) Hydrocarbon gases (HC): including Methane (CH4) Nitrous Oxide (N2O)
Mechanical	AST-ICD, AST-IHC & AST-INI Industrial Analog Transmitters	Enclosure: Water/dust tight, corrosion resistant polycarbonate
		Weight: 255 g (9 oz)
		4.9" x 4.9" x 2.9" (125 mm x 125 mm x 74 mm)
Electrical	Power Requirement	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
Environmental	Operating Temperature	-20°C to 50°C (-4°F to 122°F)
Environmental	Humidity	0 - 95% RH non-condensing