Rae QRAE PLUS PGM-2000, Руководство по эксплуатации и техническому обслуживанию

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TROUBLESHOOTING
8-4
Diagnostic displays:
1) Raw Sensor Readings
The raw sensor readings provide a quick diagnosis for
sensor response and sensitivity. If the raw reading is
outside the normal ranges, the sensor or the unit may be
defective.
When a specific gas is applied to the monitor, the
corresponding sensor’s raw reading should increase or
decrease. If the reading of the corresponding sensor does
not change when the target gas is applied, then the sensor
may be defective.
165 160 173
2051 RAW 1100
2) Sensor Names
All the combustible, oxygen and toxic sensors have a non-
volatile memory which contains the sensor identification and
other vital information, such as manufacturing date,
expected operating life, etc. If a sensor is programmed and
installed properly in the monitor, the sensor name should be
displayed. If the sensor name does not show up in the
display, then the sensor may not be programmed properly
or may be defective.
3) Show Battery and Charging Raw Count
The battery voltage, charge input sampling and charging
current in raw count are displayed to provide a greater
understanding of how your battery is functioning.
4) Adjust LCD Contrast
This display allows the user to adjust the LCD contrast.
Press the
[Y/+] key to increase the contrast and the [N/-]
key to decrease the contrast. The bar graph shows the
current LCD contrast setting.
5) Adjust Buzzer Frequency
The buzzer frequency can be adjusted for the best output
sound volume.
6) Display LEL or VOL Raw Reading