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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.
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
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.
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Model No.
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Combustible
% Gas
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Gas
%LEL
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Carbon Monoxide
CO
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Oxygen
O2
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Other Specifications
Applicable to All
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CGO-321
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0-100%
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0-100%
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0-40%
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* Warm-up: 10 sec.
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CGA-401
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*****
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0-100%
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0-5000 ppm
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0-40%
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* Pwr. Supply: 4AAs
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CGA-501
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*****
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0-100%
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0-5000 ppm
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0-40%
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* Op. Temp.: -30/50C
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*****
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*****
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*****
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* Weight: 20 ounces
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*****
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*****
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*****
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* Pump: Std.Internal
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*****
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*****
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*****
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* Auto. Cal.:30 sec.
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*****
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* Alarms: Vis.& Aud.
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Note: the CGO-321 and CGA-501 ca
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