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AST Analog Transmitter
AST Analog Transmitter - Front View
AST & AST-W Analog Transmitter with Metal Guard
AST-W Watertight Analog Transmitter
AST-W Watertight Analog Transmitter
AST-W Watertight Analog Transmitter

    AST Analog Transmitter

    Key Features

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    4 - 20 mA or 0 - 10 VDC linear output signal
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    LED indicators for power and open loop
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    RoHS compliant circuit boards
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    Temperature compensation
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    Automatic thermal resetting fuse
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    Automated calibration procedure
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    C-Tick certified

The rugged, reliable AST analog transmitter offers a variety of sensor types to detect a wide range of gases, including solid state, electrochemical, catalytic, infrared, and PID.

AST transmitters convert the raw signal from a sensor into a useful output that can be sent to a controller or building automation system.

Several enclosure options are available to meet the requirements of many different applications.

AST transmitters feature 4 - 20 mA or 0 - 10 VDC linear output signals, automatic thermal resetting fuse, RoHS compliant circuit boards, and LED indicators for power and open loop. Options include a field settable dry contact relay and a local digital display.

Automated calibration and other maintenance procedures are simple and are easily performed in the field.

APPLICATIONS

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    Parking Garages
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    Pools
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    Repair Shops
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    Hotels
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    Ice Cleaning Machine Rooms
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    Manufacturing Plants
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    many more

Gas Types

Ammonia (NH3) EAM
Carbon Monoxide (CO) ECO
Combustible Gases (solid state or catalytic) SCB or CCB
Chlorine (Cl2) ECL
Ethylene (C2H4) EC4
Formaldehyde (HCHO) EFO
Hydrogen (H2) EH2
Hydrogen Sulphide (H2S) EHS
Methane (CH4) SCB
Nitrogen Dioxide (NO2) END
Nitric Oxide (NO) ENO
Oxygen (O2) OO2
Ozone (O3) EO3
Propane (C3H8) SCB
Refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507) SR2
Sulphur Dioxide (SO2) ESO
TVOCs (solid state or PID) SOS, SPL or SPH

Sensors


Mechanical

AST Standard Analog Transmitter
Enclosure: Polycarbonate
Weight: 255 g (9 oz)
Size: 4.4" x 6.5" x 2.5" (113 mm x 165 mm x 65 mm)
   
AST-W Watertight Analog Transmitter
Enclosure: Watertight Polycarbonate
Weight: 340 g (12 oz)
Size: 5.05” x 5.05” x 3.05” (129 mm x 129 mm x 77 mm)

Electrical

Power Requirement: 12 - 30 VAC or 16 - 30 VDC
Current Draw: Approximately 80 - 120 mA
Outputs: Linear 4 - 20 mA or 0 - 10 VDC signal, jumper selectable
Wiring: VDC three-conductor shielded; VAC four-conductor shielded
Fuse: Automatic resetting thermal

Environmental

Operating Temperature: -20°C to 40°C (-4°F to 104°F)
Humidity: 15 - 95% RH non-condensing

Note: Measurements above are sensor dependent.

Certifications

C-Tick Certification C-Tick Certified

Drawings

AST Electrochemical Standard Enclosure Drawing AST Electrochemical Standard Enclosure Drawing

AST-W Electrochemical Watertight Enclosure Drawing AST-W Electrochemical Watertight Enclosure Drawing

AST Electrochemical Calibration Setup Drawing AST Electrochemical Calibration Setup Drawing

AST Solid State Standard Enclosure Drawing AST Solid State Standard Enclosure Drawing

AST-W Solid State Watertight Enclosure Drawing AST-W Solid State Watertight Enclosure Drawing

AST Solid State Calibration Setup Drawing AST Solid State Calibration Setup Drawing

AST Combustibles - Interior Drawing AST Combustibles - Interior Drawing

AST Combustibles - Exterior Drawing AST Combustibles - Exterior Drawing

Duct Sample Installation Duct Sample Installation Drawing

Small Metal Protective Guards Drawing Small Metal Protective Guards Drawing

AST-OO2-W Ozone dimensions & connections diagram AST-OO2-W Ozone dimensions & connections diagram

Product Specifications

AST Electrochemical Product Specifications AST Electrochemical Product Specifications

AST Solid State Product Specifications AST Solid State Product Specifications

AST Ammonia (NH3) Product Specifications AST Ammonia (NH3) Product Specifications

AST Combustible Catalytic Product Specifications AST Combustible Catalytic Product Specifications

AST Carbon Monoxide (CO) Product Specifications AST Carbon Monoxide (CO) Product Specifications

AST Chlorine (Cl2) Product Specifications AST Chlorine (Cl2) Product Specifications

AST Formaldehyde (HCHO) Product Specifications AST Formaldehyde (HCHO) Product Specifications

AST Hydrogen (H2) Product Specifications AST Hydrogen (H2) Product Specifications

AST Hydrogen Sulphide (H2S) Product Specifications AST Hydrogen Sulphide (H2S) Product Specifications

AST Nitrogen Dioxide (NO2) Product Specifications AST Nitrogen Dioxide (NO2) Product Specifications

AST Oxygen (O2) Product Specifications AST Oxygen (O2) Product Specifications

AST Ozone (O3) Product Specifications AST Ozone (O3) Product Specifications

AST Sulphur Dioxide (SO2) Product Specifications AST Sulphur Dioxide (SO2) Product Specifications

AST Refrigerants Product Specifications AST Refrigerants Product Specifications

AST PID-TVOCs (0-50 ppm range) Product Specifications AST PID-TVOCs (0-50 ppm range) Product Specifications

AST PID-TVOCs (0-300 ppm range) Product Specifications AST PID-TVOCs (0-300 ppm range) Product Specifications

Metal Transmitter Guards Product Specifications Small Metal Protective Guards Product Specification

Engineering Specification Samples

Ammonia (NH3)
GEM-B-NW & AST-EAM-W Gas Detection System for Ammonia (NH3) GEM-B-NW & AST-EAM-W for Gas Detection System

Carbon Monoxide (CO) & Combustibles
AST-ECO & AST-SCB Carbon Monoxide (CO) & Combustibles for Parking GaragesAST-ECO & AST-SCB for Parking Garages

Carbon Monoxide (CO) & Nitrogen Dioxide(NO2)
PDC, AST-ECO & AST-END Carbon Monoxide (CO) & Nitrogen Dioxide (NO2) for Analog Multichannel System PDC, AST-ECO & AST-END for Analog Multi-Channel System
AST-ECO & AST-ENDCarbon Monoxide (CO) & Nitrogen Dioxide(NO2) for Parking Garages AST-ECO & AST-END for Parking Garages
AST-ECO & AST-END Carbon Monoxide (CO) & Nitrogen Dioxide(NO2) for Firehalls AST-ECO & AST-END for Fire Halls

Chlorine (Cl2)
GEM-B-NW & AST-ECL-W Gas Detection System for Chlorine (Cl2) GEM-B-NW & AST-ECL-W for Gas Detection System

Nitrogen Dioxide(NO2)
AST-END Nitrogen Dioxide (NO2) for Diesel Exhaust Detections AST-END for Diesel Exhaust Detections
AST-END Nitrogen Dioxide(NO2) for Diesel Exhaust Duct Applications AST-END for Diesel Exhaust Duct Applications

Refrigerants
GEM-B-N & AST-SR2 for Refrigerant Leak Detection System (with analog transmitter) GEM-B-N & AST-SR2 for Refrigerant Leak Detection System (with analog transmitter)

DataSheets

AST DatasheetAST Datasheet

AST-W DatasheetAST-W Datasheet

Operation Manual

AST Electrochemical Operation ManualAST Electrochemical Operation Manual

AST Solid State & Catalytic Operation ManualAST Solid State & Catalytic Operation Manual

Application Brochure

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

Hotel Application Brochures
Hotel Application BrochureAir Conditioned Hotel Room Application

Miscellaneous Files

Quick Selection Guide For Fixed Gas Detection TransmittersQuick Selection Guide For Fixed Gas Detection Transmitters

AST Standard Analog Transmitter

Ammonia (NH3) electrochemical, 0-500 ppm AST-EAM
Carbon monoxide (CO), 0-200 ppm AST-ECO
Combustible gases (solid state), 0-50% LEL AST-SCB
Combustible gases (catalytic), 0-100% LEL AST-CCB
Chlorine (Cl2), 0-5 ppm AST-ECL
Ethylene (C2H4), 0-2000 ppm AST-EC4
Formaldehyde (HCHO), 0-10 ppm AST-EFO
Hydrogen (H2), 0-2000 ppm AST-EH2
Hydrogen sulphide (H2S), 0-50 ppm AST-EHS
Methane (CH4), 0 - 50% LEL AST-SCB
Nitrogen dioxide (NO2), 0-10 ppm AST-END
Nitric oxide (NO), 0-100 ppm AST-ENO
Oxygen (O2) electrochemical, 0-25% volume AST-OO2
Ozone (O3), 0-2 ppm AST-EO3
Propane (C3H8), 0 - 50% LEL AST-SCB
Refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507), 0-2000 ppm AST-SR2
Sulphur dioxide (SO2), 0-20 ppm AST-ESO
TVOCs (solid state), 0-500 ppm AST-SOS
TVOCs (PID), 0-50 ppm AST-SPL
TVOCs (PID), 0-300 ppm AST-SPH

Standard Option

Local LED digitial display N
Relay, dry contact S.P.D.T., 2 amps @ 28 V R
Remote sensor Z

AST-W Watertight Analog Transmitter

Ammonia (NH3) electrochemical, 0-500 ppm AST-EAM-W
Carbon monoxide (CO), 0-200 ppm AST-ECO-W
Combustible gases (solid state), 0-50% LEL AST-SCB-W
Combustible gases (catalytic), 0-100% LEL AST-CCB-W
Chlorine (Cl2), 0-5 ppm AST-ECL-W
Ethylene (C2H4), 0-2000 ppm AST-EC4-W
Formaldehyde (HCHO), 0-10 ppm AST-EFO-W
Hydrogen (H2), 0-2000 ppm AST-EH2-W
Hydrogen sulphide (H2S), 0-50 ppm AST-EHS-W
Methane (CH4), 0 - 50% LEL AST-SCB-W
Nitrogen dioxide (NO2), 0-10 ppm AST-END-W
Nitric oxide (NO), 0-100 ppm AST-ENO-W
Oxygen (O2) electrochemical, 0-25% volume AST-OO2-W
Sulphur dioxide (SO2), 0-20 ppm AST-ESO-W
Ozone (O3), 0-2 ppm AST-EO3-W
Propane (C3H8), 0 - 50% LEL AST-SCB-W
Refrigerants (R12, R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507), 0-2000 ppm AST-SR2-W
TVOCs (solid state), 0-500 ppm AST-SOS-W
TVOCs (PID), 0-50 ppm AST-SPL-W
TVOCs (PID), 0-300 ppm AST-SPH-W

Watertight Option

Local LED digitial display N
Relay, dry contact S.P.D.T., 2 amps @ 28 V R
Splash guard S

Metal Protective Guard

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

Fixed Calibration Kit

» Full selection of calibration gases from stock
» All required calibration accessories for field and shop calibration
» Full service and calibration shop for fixed gas detection instruments

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