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Biosystems Gas Detectors



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home biosystems index Biosystems GasChek1

GasChek 1 Single Channel
Fixed Gas Detection System

NOTE: The Biosystems GasChek1 Was Discontinued 3-13-2007

Please click here or contact us
for the Otis Instruments alternative systems

The GasChek 1 is a microprocessor based fixed gas detection system designed to accept the input from a single remotely located oxygen, combustible or toxic detector assembly. Biosystems GasChek 1 Single Channel Fixed Gas Detection System

GasChek 1 systems are designed to provide continuous round-the-clock monitoring for a variety of common atmospheric hazards including oxygen deficiency and/or enrichment, combustible gases and vapors, and specific toxic contaminants such as carbon monoxide (CO), hydrogen sulfide (H2S), sulfur dioxide (SO2), chlorine (Cl2), and nitrogen dioxide (NO2). Remote detector assemblies are available in explosion proof or non-explosion proof versions. Both types of detector housing include digital readouts and switches which allow for single person, non-intrusive calibration adjustment. 

All GasChek 1 systems include built in digital readouts at both the controller and remote detector. Other standard features include two independently adjustable alarm setpoints, built in audible alarm, bright LED alarm light indicators and relay contacts for fault, low and high alarm conditions; 1-5 Volt or 4-20 mA user configurable analog output, and built-in 12V sealed lead acid battery backup power supply. 


GasChek1 Features 

  • Round-the-clock monitoring for a wide variety of atmospheric hazards 
  • Easy to install and operate 
  • Weatherproof NEMA 4X controller housing 
  • Digital readouts at both controller and remote detector 
  • Two independently adjustable alarm levels 
  • Comprehensive output relays for remote signaling and control 
  • Single person, non-intrusive calibration adjustment 
  • Built-in backup power supply 

Technical Specifications:
Gas Channel Inputs All remote detector assemblies: 4-20 mA current loops
GasChek 1 Outputs Fault, low and high alarm, DPDT relay - contacts rated 5 Amp at 250 VAC, non-inductive load; and 1-5 Volt or 4-20 mA user configurable analog output.
GasChek 1 Displays Controller: Red LED - 3 digit 7 segment for gas level (flashes for over-range); Remote detector: 3 1/2 digit LCD
GasChek 1 Indicators (LED) Green: main power, battery, measurement units (ppm, % LEL, % volume); red: low alarm, high alarm; amber: fault
Power Requirements 110/220/240 VAC - 50/60 Hz, 12/24 VDC, 50 W max.
Temperature Range 14 to 104 degrees Fahrenheit (-1O to +40 degrees Celsius)
Humidity Range 0 to 95% RH, noncondensing
Weather Protection NEMA 4X
Dimensions GasChek 1 controller: 11.2" (28cm) x 9.2" (23cm) x 6.2" (15.5cm)
Weight GasChek 1: 9 lbs (4kg)

WARNING! Honeywell Analytics - Biosystems equipment should only be used in conjunction with the manufacturer's instructions.
Failure to follow such instructions could result in serious injury or fatality.


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