General Monitors S216A, Инструкция по эксплуатации

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Digital Display Codes (
continued
)
F1 , F2 , F3 , F4 , F5 , F6 , F7 , F9 These codes
will appear on the display if a Fault condition
occurs. For more information about these
codes, refer to Section 4.8 Fault Codes and
Their Remedies.
Pr
This code will appear on the display to
indicate that the Program Review can be
entered by removing the magnet from the
GMI Logo on the cover of the Model S216A.
When the unit is in the normal operating
mode, the display will indicate the presence of
hydrogen sulfide gas in parts per million
(ppm). The ranges of detection are from 0 to
99ppm, 0 to 50ppm or 0 to 20ppm.
4.8 Fault Codes & Their Reme -
dies
The Model S216A has self-diagnostics
incorporated into the microprocessor’s
program. If a fault is detected, the output
signal will drop to 0mA and a Fault code will
be displayed. The output signal will inform a
remote display module that the Model S216A
is in the Fault Mode. The display will
indicate a Fault code that can be viewed at the
sensor site.
There are eight Fault conditions that are
monitored by the microprocessor. When a
calibration fault (F1, F2, F3) has occurred and
has been corrected, the unit will automatically
revert to the calibration process and the unit
must be re-calibrated. If a fault other than a
calibration fault occurs and is corrected, the
unit will return to normal operation.
F1 = High response during calibration
This fault may occur for one of the
following reasons:
l
Incorrect gas concentration - If the
applied gas concentration is too high.
l
Faulty sensor - A 0 to 20ppm sensor is
being used in a 0 to 100ppm
application, for example.
Take the appropriate action:
l
Make sure that the gas concentration is
accurate.
l
Use the correct sensor.
F2 = Failed to complete the calibration
This fault will occur if the unit is placed in
the calibration mode and the sensor has
not responded within twelve minutes. Try
to re-calibrate the unit.
F3
= Low response during calibration
This fault may occur for either of the
following reasons:
l
Incorrect gas concentration - If the
applied gas is too low.
l
Faulty sensor - The sensor may have
suffered a loss of sensitivity due to
contamination.
Take the appropriate action:
l
Make sure that the gas concentration is
accurate.
l
Replace the sensor.
24
Operation General Monitors