Bacharach Gas Pup, Инструкция

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Gas Pup
2 Instruction 55-9002
Introduction
Components
Natural Gas Detection
The instrument’s PPM and LO% ranges use a catalytic-bead detection
circuit, which is the most widely accepted method of detecting combus-
tible gases. The HI% range uses the thermal-conductivity method of
detection, which is a reliable method for measuring the concentration of
one gas in a second gas (methane in air).
Pressure Detection
The instrument contains a solid-state pressure sensor that supports the
instrument’s three pressure modes (High, Low & Delta). The optional
Pressure Hose Kit accessory with fittings (P/N 55-0038) can be used to
connect the instrument’s quick-connect pressure fitting to the pressure
source.
Sample Pump
An internal sample pump draws a gas sample into the instrument for
analysis. This is a convenience in the LO% and HI% gas ranges, providing
a more reliable and accurate test of gas levels. It is also important in the
PPM range to achieve a stable gas reading at low gas concentrations.
The sample pump includes a flow-failure function. If the flow is blocked
(e.g., clogged filter or crimped hose), the display will blink the letters
“F P” in the READING window. When the pump returns to normal
operation, the display stops blinking.
Batteries
Three ‘AA’ alkaline batteries supply power to the instrument. A fresh set
of batteries will typically last 6–8 hours, depending on how the instru-
ment is used. The batteries are housed in a battery block internal to the
instrument, and are protected with a metal cover and retained by two
thumbscrews. This design allows the batteries to be quickly replaced in
an area known not to contain explosive gases.
Case
The instrument is housed in an anodized extruded aluminum case. The
instrument is rugged, resistant to water and electromagnetic interfer-
ence. Rubber-bumper guards provide impact protection on both ends of
the instrument.