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Instruction 55-9002 1

Gas Pup

Introduction

General Description

The Bacharach Gas Pup (Figure 1)

is a natural gas detection instru-

ment designed for general leak

detection, barholing operations,

regulator pressure checks, and line

pressure integrity operations. It

offers measurement of natural gas

(as methane) in the following three

ranges:

• PPM (Low) Range: Gas level

displayed in 0 to 2500 ppm as a

bar graph, allowing visual indica-

tion of the peak reading. Useful

for locating leaks in piping.

• LO% (Mid Percent) Range:

Measures natural gas in the

range of 0.2–5.0% by volume,

which corresponds to the lower

explosive limit (LEL) of methane.

• HI% (High Percent) Range: 0–100% by volume is useful in “pin

pointing” leaks in underground piping through barhole testing

The Gas Pup also features three pressure modes: High (0 to 99 psig);

Low (–9.9 to 9.9 psig); and Delta (displays a pressure change in the range

of ±9.9 psig from any reference pressure between 0 and 90 psig).

Three ‘AA’ batteries power the instrument. Pressing the key for at

least 1 second turns the instrument ON; after which, the battery voltage

is briefly displayed, followed by the gas and pressure sensors being

zeroed, and then followed by the display of the detected gas level.

The Gas Pup’s gas display is auto ranging, automatically switching

between its PPM, LO%, and HI% ranges as the detected gas level rises

and falls. The Gas Pup’s pressure-operating mode is selected by pressing

the key while the word “GAS” is being displayed during the

instrument’s warm-up period.

Figure 1. Gas Pup shown with

Probe and Coiled Tubing

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Bacharach Gas Pup Especificaciones Pagina 7