Honeywell Sensepoint XRL, Инструкция по эксплуатации

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Maintenance
b) If there is any doubt of the quality of the atmosphere, connect a
cylinder of fresh air to the detector using the installed tube or
the calibration cap. For details about how to use a calibration
cap, see Calibration Cap on page 31.
c) Apply fresh air to the detector, and wait for a few minutes until
the reading is stable.
d) Using the UP and DOWN buttons, adjust the output voltage so
that the voltmeter is reading slightly above zero, and then
decrease the reading slowly so that it reads zero.
4. After successful zero calibration it will move to span calibration
automatically. If a span calibration is not required, exit from
calibration by holding DOWN button for 5 seconds. This will cancel
a span calibration while zero calibration result is stored.
a) Move to the next step by holding the UP button for 2 seconds.
b) Connect a cylinder of span gas to the detector. Where the
greatest accuracy is required, the cylinder concentration should
be usually around the alarm set point or 50% of the range of the
detector.
c) Apply the span gas to the detector, and wait for a few minutes
until the reading is stable.
d) Using the UP and DOWN buttons, adjust the output voltage
until it reaches the target value. Use the formula below to
calculate what the correct voltage should be.
V
out
= Gas concentration ÷ detector range
For example, if you are applying 45% LEL gas with a 100% LEL
detector range, you would need to adjust the voltage output so
that the reading on the voltmeter shows:
45 ÷ 100 = 0.45 V
5. Purge the gas sensor.
a) Move to the next step by holding the UP button for 2 seconds.
b) Remove the span gas from the detector.
c) Make sure that the reading voltage out returns to zero. If there is
any doubt that the detector is not in fresh air, apply cylinder air.
Otherwise, an alarm may occur.
6. Use the cancel function to return to normal monitoring mode.
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