General Monitors S216A, Инструкция по эксплуатации

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Calibration Equipment (
continued
)
NOTE: Do not store the cylinder with the
regulator fully engaged in the cylinder
valve.
Use the calibration procedure listed below
for H
2
S Portable Purge calibrations:
l
Make sure the Portable Purge Calibrator
contains a gas concentration equivalent
to 50% of full scale for the unit that is
going to be calibrated.
l
Ensure that the sensor is seeing clean air.
If it is suspected that hydrogen sulfide
gas is present, it will be necessary to
purge the sensor environment with clean
air.
l
Place the gas cup over the sensor and
initiate the calibration sequence by
placing the magnet over the GMI Logo
on the cover of the unit.
l
When the letters
AC
appear in the
display window remove the magnet and
apply the calibration gas (50% of full
scale) by opening the valve on the
cylinder.
l
When the sensor begins to see the gas,
the display will change from AC to CP
to indicate “Calibration in Progress”.
l
When the calibration sequence is
complete, the display will change from
CP
to
CC
to indicate “Calibration
Complete”.
l
Remove the gas by closing the valve on
the cylinder and remove the cup allowing
the sensor to see clean air. The display
will change from
CC to indicate a few
parts per million (ppm) and then drop to
0
.
l
The unit is now calibrated and the new
values have been stored in the EEPROM
(non-volatile memory).
19
Model S216A Operation