Owner's manual

Model GX-86 Instruction Manual Introduction • 1
Introduction
The RKI Model GX-86 is a proven gas detection instrument, in use internationally for
personal protection in a wide variety of industries. The GX-86 is compact, convenient, and
offers a full range of features, including:
• simultaneous detection of combustible gas (% LEL,) oxygen deficiency (O
2
), carbon
monoxide (CO), and hydrogen sulfide (H
2
S)
• dot-matrix display for complete, understandable information at a glance
• distinctive audible alarms for dangerous conditions and malfunctions
• intrinsic safety for Class I, Division I, Group C and D hazardous atmospheres
• microprocessor control for reliability, ease of use, and advanced capabilities
• small size and light weight for user comfort
WARNING: The GX-86 is designed to detect combustible gas, oxygen deficiency,
hydrogen sulfide, and carbon monoxide, which can be life threatening.
Users must follow the instructions and warnings in this manual to assure
proper and safe operation of the GX-86.
Description
The RKI Model GX-86 is an advanced portable instrument for simultaneous detection of
combustible gas (LEL), oxygen deficiency (O
2
), carbon monoxide (CO), and hydrogen
sulfide (H
2
S) See Table 1 for detection ranges. Gas detection features include distinctive
alarms for dangerous gas concentrations and time-weighted averaging for exposure to
toxic gases (H
2
S and CO).
The GX-86 is compact enough to be worn on a belt loop or shoulder strap, which leaves
your hands free. It has a tough plastic housing, touch-pad control panel, back-lit display,
and comes with a vinyl carrying case.
The GX-86 is easy to adjust and maintain. The batteries and diffusion sensors are user-
replaceable. The GX-86 also displays battery condition and sensor malfunction during
start-up and operation.
Table 1: Ranges of Target Gases
Gas Detected Range
Combustible
0 to 100% LEL
1
Oxygen 0 to 40%
Hydrogen sulfide
0 to 100 ppm
2
Carbon monoxide 0 to 300 ppm
1
LEL (Lower Explosive Limit)
2
ppm (Parts Per Million)