Use and Care Guide

INTRODUCTION

Thank you for purchasing General Tools & Instruments’ CGD900 Com-

bustible Gas Leak Detector with MSHA “Intrinsically Safe” approval.

Please read this user’s manual carefully and thoroughly before using

the instrument.

The CGD900 uses proven heated-sensor technology to detect the

presence of most combustible gases, including methane, propane,

butane, acetylene, and alcohol and gasoline vapors (see p.7 [Specifi-

cations section] for a longer list). In addition, its unique front-panel

readout indicates the relative size of a gas leak from 1 to 9.

This reading makes it easier to pinpoint the source of a leak and helps

you decide whether it is large enough to be worth plugging. The read-

ing, which is independent of the unit’s sensitivity level, rises and falls

with the amount of combustible gas sensed at the end of the CGD900’s

17-inch-long flexible and obedient probe. The maximum value is dis-

played when the tip of the probe is at the source of the leak.

The CGD900 is powered by four “AA” Alkaline (non-rechargeable)

batteries.

KEY FEATURES

• CE certified to meet European Union requirements

• MSHA Certified “Intrinsically Safe” in Methane-Air only

• Durable, stable sensor with industry-first two-year warranty

• Methane sensitivity of <5 ppm

• Calibrates automatically

• Unique numeric leak size indicator on front panel

• Three adjustable sensitivity levels

• Comfortable Sanoprene rubber grip

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