Intrinsically Safe Gas Monitors for Telephone and Electric Utilities

Intrinsically Safe Gas-Sentry Monitors for combustible gas and oxygen with optional sensors for carbon monoxide and hydrogen sulfide are used for locating the source of leaking natural and combustible gas and testing and monitoring the safety of ambient air in confined and enclosed spaces. The CGA-501 four-gas monitor is designed to operate continuously for 40 hours on a set of four AA batteries.

Intrinsically,Safe,Gas,Monitors,Telephone,Electric,Utilities
Checking a Manhole for Gases Prior to Entry

Bright LED Numeric & Alpha Display

High precision numeric display with flashing alpha descriptors indicating which scale is alarming

Two Sensors Provide Accurate %LEL Reading

Catalytic combustion and thermal conductivity sensors detect the full range of fuel gases

Automatic Calibration

Catalytic combustion, oxygen and CO / H2S sensor automatically calibrate in 30 seconds

Optional Calibration Verification

Docking stations automatically supply calibration gases and record calibration data

Optional Combined CO / H2S Sensor

Toxic gas (CO / H2S) sensor which is CO specific when used with in-line interference filter

Intrinsically,Safe,Gas,Monitors,Telephone,Electric,Utilities
Gas-Sentry used underground

The CGO-321 and CGA-401 detectors, unlike the CGA-501 continuous monitor, are designed for intermittent duty and will operate 12 to 24 hours on a set of AA batteries.

Model No.

Combustible
% Gas

Gas
%LEL

Carbon Monoxide
CO

Oxygen
O2

Other Specifications
Applicable to All

CGO-321

0-100%

0-100%

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0-40%

* Warm-up: 10 sec.

CGA-401

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0-100%

0-5000 ppm

0-40%

* Pwr. Supply: 4AAs

CGA-501

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0-100%

0-5000 ppm

0-40%

* Op. Temp.: -30/50C

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* Weight: 20 ounces

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* Pump: Std.Internal

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* Auto. Cal.:30 sec.

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* Alarms: Vis.& Aud.

Note: the CGO-321 and CGA-501 ca