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Biosystems Gas Detectors


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Biosystems, Sperian Instruments, Honeywell, gas detectors, MultiPro, PhD6, ToxiPro, ToxiLTD, IQ Docking Stations, PosiChek3 SCBA Testing, calibration gas

Biosystems GasChek 4 Multi-Channel
Fixed Gas Detection System

NOTE: The Biosystems GasChek4
Was Discontinued 3-13-2007
Support is No Longer Available

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

home biosystems index Biosystems GasChek4 Fixed Systems

The GasChek 4 is a microprocessor based fixed gas detection system designed to accept the input from one to four remotely located oxygen, combustible or toxic detector assemblies. BiosystemsGasChek 4 Multi Channel Fixed gas Detection SystemGasChek 4 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). 

The system is designed for easy expansion by means of plug-in sensor modules. Remote detector assemblies are available in non-explosion proof or explosion proof versions. Both types of detector housing include digital readouts and switches which allow for single person, non-intrusive calibration adjustment. 

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


GasChek 4 Multi-Channel Fixed Gas Detection System

  • Round-the-clock monitoring for a wide variety of atmospheric hazards 
  • Easy to install and operate 
  • Easily expandable 1 to 4 channel versions 
  • Weatherproof NEMA 4X controller housing 
  • Digital readouts at both controller and remote detector 
  • Two alarm levels per channel 
  • 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 4 Outputs Common: 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. Channel Specific: each channel includes low and high alarm, DPDT relay - contacts rated 5 AMP at 240 VAC, non-inductive load; and 1-5 Volt or 4-20 mA user configurable analog output.
GasChek 4 Displays Controller: Red LED - 3 digit 7 segment for gas level (flashes for over-range); Green 
LED - C plus digit for channel number, units pointer for concentration; Sensor Housing: 3 1/2 digit LCD
GasChek 4 Indicators (LED) Green: main power, battery, mode hold, mode run, channel number; 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 (-10 to +40 degrees Celsius)
Humidity Range 0 to 95% RH, noncondensing
Weather Protection NEMA 4X
Dimensions GasChek 4 controller: 15.2" (38cm) x 13.2" (33cm) x 7.2" (18cm)
Weight GasChek 4 controller: 20 lbs (9kg)

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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