Contact Us Login Where to Buy
home > products > fixed gas detectors > transmitters > ast
AST Analog Transmitter
AST-W Watertight Analog Transmitter
AST & AST-W Analog Transmitter with Metal Guard
AST Analog Transmitter - Front View
AST-W Watertight Analog Transmitter
AST-W Watertight Analog Transmitter

    AST Analog Transmitter

    Key Features

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

  • » 
    Parking Garages
  • » 
    Repair Shops
  • » 
    Pools
  • » 
    Hotels
  • » 
    Ice Cleaning Machine Rooms
  • » 
    Manufacturing Plants
  • » 
    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 (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

Input / Output


User Interface


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

Small Metal Protective Guards Drawing Small Metal Protective Guards Drawing

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

Product Specification

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

Sensor 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

Carbon Monoxide (CO), Nitrogen Dioxide (NO2) & Propane (C3H8)
PDC-A08, AST-ECO, AST-END & AST-SCB Carbon Monoxide (CO), Nitrogen Dioxide (NO2) & Propane (C3H8) for Vehicle Exhaust & Fuel Leak Detection System PDC-A08, AST-ECO, AST-END & AST-SCB for Vehicle Exhaust & Fuel Leak Detection System

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

Combustible Gas (e.g. H2)
GEM-B-JN & AST-SCB for Battery Charging Room GEM-B-JN & AST-SCB for Battery Charging Room
PDC-A08 & AST-CCB-X for Tank Bunker & Gen Room PDC-A08 & AST-CCB-X for Tank Bunker & Gen Room
PDC-A08 & AST-CCB-X for Propane Fuel Vapor Detection System for BARD Heating Systems for Portables PDC-A08 & AST-CCB-X for Propane Fuel Vapor Detection System for BARD Heating Systems for Portables

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

Ozone (O3)
PDC-A08 & AST-EO3-W for Hydro Power Generation PDC-A08 & AST-EO3-W for Hydro Power Generation

Refrigerants
AST-SR2 for Refrigerant Leak Detection System AST-SR2 for Refrigerant Leak Detection System
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

CETCI Product Family BrochureCETCI Product Family Brochure

AST Standard Analog Transmitter

Description Code
Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-EAM
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-ECO
Catalytic combustible gas (pls specify) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-CCB
Solid state combustible gas (pls specify) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SCB
Electrochemical ethylene (C2H4) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-EC4
Electrochemical formaldehyde (CH2O) sensor (0 - 10 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-EFO
Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-EH2
Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-CCB
Solid state hydrogen (H2) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SCB
Catalytic methane (CH4) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-CCB
Solid state methane (CH4) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SCB
Electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-ENO
Electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-END
Electrochemical oxygen (O2) sensor (0 - 25% volume range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-OO2
Catalytic propane (C3H8) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-CCB
Solid state propane (C3H8) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SCB
Solid state refrigerant (R134A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R22) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R402A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R404A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R407C) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R410A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R422A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R422D) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state refrigerant (R507) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SR2
Solid state TVOC sensor (0 - 500 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SOS
PID TVOCs sensor (0 - 300 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SPH
PID TVOCs sensor (0 - 30 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC  AST-SPL

Standard Option

Description Code
LED digital display  N
Relay, dry contact SPDT, 2 amps @ 28 V  R
Remote sensor  Z
Water / dust tight enclosure  W
Splash guard (for water / dust tight enclosure only)  S

AST-W Watertight Analog Transmitter

Description Code
Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EAM-W
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-ECO-W
Electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-ECL-W
Catalytic combustible gas (pls specify) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-CCB-W
Solid state combustible gas (pls specify) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SCB-W
Electrochemical ethylene (C2H4) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EC4-W
Electrochemical ethylene oxide (C2H4O) sensor (0 - 20 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EET-W
Electrochemical formaldehyde (CH2O) sensor (0 - 10 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EFO-W
Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EH2-W
Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-CCB-W
Solid state hydrogen (H2) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SCB-W
Electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EHS-W
Catalytic methane (CH4) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-CCB-W
Solid state methane (CH4) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SCB-W
Electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-ENO-W
Electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-END-W
Electrochemical oxygen (O2) sensor (0 - 25% volume range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-OO2-W
Electrochemical ozone (O3) sensor (0 - 2 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-EO3-W
Catalytic propane (C3H8) sensor (0 - 100% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-CCB-W
Solid state propane (C3H8) sensor (0 - 50% LEL range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SCB-W
Solid state refrigerant (R134A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R22) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R402A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R404A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R407C) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R410A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R422A) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R422D) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Solid state refrigerant (R507) sensor (0 - 2,000 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SR2-W
Electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-ESO-W
Solid state TVOC sensor (0 - 500 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SOS-W
PID TVOCs sensor (0 - 300 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SPH-W
PID TVOCs sensor (0 - 30 ppm range), LED indicators, 4 - 20 mA or 0 - 10 VDC output, 12 - 30 VAC or 16 - 30 VDC, water / dust tight enclosure  AST-SPL-W

Watertight Option

Description Code
LED digital display  N
Relay, dry contact SPDT, 2 amps @ 28 V  R
Remote sensor  Z
Splash guard  S

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

» Complete calibration kits
» All required calibration accessories for field and shop calibration
» Full selection of calibration gases from stock

Sample Draw Pump Unit

» Self contained sample draw pump unit
» 24 VDC or VAC powered
» Standard water / dust tight enclosure

Bookmark and Share

Contact Us

General Inquiry
Application Support
Quote Request
Maintenance Support
Technical Support
RMA Request
  Warranty
Distribution Opportunity
 

© 2013 Critical Environment Technologies Canada Inc. All rights reserved.
Vancouver Web Design by EQQY GROUP.
Follow us on: Find us on Facebook: CETCI Follow us on Twitter: @cetci Connect with us on LinkedIn Connect with us on Flickr Follow our RSS feed. Follow our blog