Bacharach Gas Pup, Инструкция

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Gas Pup
14 Instruction 55-9002
HI% (High Percent) Range
If the gas concentration goes above the
upper limit of the LO% range (greater than
5.0%), automatic changeover to the HI%
range occurs. The instrument goes through
a 5 second stabilization time period after
this range change occurs, with the display
flashing as an indication that the readings
are inaccurate until stabilized.
In the HI% range, there is a two digit
numerical display, with no decimal point,
plus a bar graph that tracks the digital
reading. The range indicator points to the
“HI%” flag for range definition. The number
displayed is the concentration of natural
gas being sampled in steps of 1% by volume.
Note that because there is only two digits,
100% gas is displayed as “– –”. The bar
graph tracks the digital reading to give an
enhanced visual picture of the changing gas
concentration, but the highest bar ‘sticks’ at
the maximum reading.
As noted above, a unique feature of the HI%
range is that the bar graph ‘sticks’ at the
maximum reading, a convenience in barhole
testing where the peak value is desired.
This peak value is retained until the instru-
ment transfers (automatically or manually)
to the LO% range.
Pressure Operating Mode
Selecting the Pressure Mode
See Figure 12. The instrument is placed in its pressure mode by pressing
the
key during startup while the word “GAS” is displayed. The display
changes to “PrS” to indicate that the pressure mode has been selected.
Then after the instrument warms up, the letter “P” appears in the
RANGE window, indicating that the instrument is currently measuring
pressure.
Figure 11.
Typical HI% Reading
Showing 38% Gas and
100% Gas
Operation
38% Gas
100% Gas