Page 390 - Praxair - Specialty Gases and Equipment Reference Guide

Gas Detection Systems

Low Level Gas Detection

Gas Check G
GasCheck G rapidly and accurately detects almost any gas or
gas mixture down to highly sensitive levels.
Designed for the search and location of gas leaks, GasCheck G has an
advanced micro thermal conductivity sensor for fast, effective detection
of almost any gas or gas mixture.
Robust and reliable, GasCheck G provides stable, repeatable readings of the
detected gas. The instrument’s LCD display, LED indicator and audible sounder
clearly indicate the leak present.
GasCheck G automatically zeros to the ambient air around it when switched on
and is ready to detect immediately. The instrument’s easy to use graphical
interface and intuitive keypad allows simple function, selection and adjustment.
Upgradeable throughout the range, GasCheck G is available in three distinct
versions; G1, G2 and G3 with varied capabilities. Features can be easily added
to upgrade the instrument without it having to be returned to the factory.

Features GasCheck G Model Capabilities
n Best available leak detection G1 G2 G3
n Fast, accurate leak detection at highly Rapid detection of • • •
sensitive levels gas leaks
n Detects almost any known gas or
gas mixture Measures gas leaks •
n Particularly sensitive to ammonia, argon, (single gas)
butane, helium, hydrogen and SF6 Measures gas leaks •
n Reliable, stable, repeatable readings (up to 20 gases)
n Ease of use Audible sounder • • • Section E – Gas Handling Equipment
n Simple, one handed operation Flashing back-lit display • • •
n Large, clear LCD back lit display for
easy viewing Peak hold readings • •
n Graphical icon menu Factory or custom • •
n Conveniently calibrated against helium calibration available
n Flexibility Data logging (store up •
n Choice of readings in cc/sec, to 10 readings)
g/yr, mg/m 3 Readings displayed •
n Easily upgradeable throughout the range in cc/sec, g/yr, ppm
or mg/m 3
Selectable battery type •
Upgradeable • •

Specifications
n Detector n Sound n Flow Rate
Micro thermal conductivity detector (MTCD) Flashing LED and 90 dBA (at 10 cm) 2 cc/min
Sensor is poison resistant with over range audible sounder
protection n Temperature
n Calibration Operating: -20 to 60 °C, -4 to 140 °F
n Operation Factory calibrated to fully documented Storage: -20 to 70 °C, -4 to 140 °F
Battery Type: 4 x alkaline AA size or NiMH procedures in accordance with our Humidity: 0-99% RH (non condensing)
(rechargeable). Typically 40 hours life ISO 9001:2008 Quality Management
Instrument with probe:
n Sensitivity (cc/sec) System n Weight and Dimensions
He 1 x 10 , CH 4 5 x 10 , n Data Logging 390 x 60 x 49 mm, 15.5 x 2.3 x 1.9"
-5
-5
R12 5 x 10 , Ar 1 x 10 -4 10 data points (available for G3 only.) Case:
-5
n Accuracy n Temperature 420 x 320 x 97 mm, 16.5 x 12.5 x 3.8"
– 5% Displayed reading – One digit Operating: -20 to +60 °C, -4 to 140 °F Instrument:
n Response Storage: -20 to +70 °C, -4 to 158 °F 0.45 kg, 1 lb, Packed 1.6 kg, 3.5 lb
T90 = 1 second rise and clear down Humidity: 0 to 99% RH (non-condensing)

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