RKI Instruments GD-K77D - Manual (Page 39)

Model GD-K77D Operator’s Manual Maintenance • 34
3. Use the FLOW ADJ switch to show 1-3 on the display.
4. Press the TEST/SET switch. The display will show “ADJ.”
5. Press and hold the TEST/SET switch until 2-1 appears on the display. The unit is now
in Maintenance Mode 2.
6. Press the TEST/SET switch to display the sensor bias voltage on the screen. The bias
voltage is displayed in mV (millivolts).
7. Press the MODE switch to return the unit to Maintenance Mode 2.
8. Press and hold the MODE switch until the Skip lamp shuts off; this action will return
the unit to Detection Mode.
Setting a Sensor’s Start-up Time
This procedure performs internal setup in the GD-K77D specific to the new sensor so that
the unit will be able to determine when the sensor’s output becomes too low to operate
properly.
1. Turn on the power to the Model GD-K77D. See “Start Up” for more information.
2. Activate Maintenance Mode 1 by removing the Model GD-K77D’s cover, then pressing
and holding the Mode switch for three (3) seconds until 1-1 appears on the display
and the SKIP lamp flashes.
3. Use the FLOW ADJ switch to show 1-3 on the display.
4. Press the TEST/SET switch. The display will show “ADJ.”
LED indication Display indication
PW/TR ALM1 ALM2 SKIP
1 3
LED indication Display indication
PW/TR ALM1 ALM2 SKIP
2 1
LED indication Display indication
PW/TR ALM1 ALM2 SKIP
1 1
LED indication Display indication
PW/TR ALM1 ALM2 SKIP
1 3