RKI Instruments GD-K77D - Manual (Page 26)

21 • Operation Model GD-K77D Operator’s Manual
Operation Flow
The diagram below shows the operation flow for Detection Mode. In Detection Mode, the
PW/TR light is on and the LED display shows the concentration of the target gas.
Gas Alarm
During an alarm condition, ALM1 will be on if the gas concentration rises above the alarm
1 set point, and ALM2 will be on if the gas concentration rises above the alarm 2 set point.
The LED display will show the concentration of the target gas. The example below
illustrates an alarm 1 condition with a gas concentration of 0.5 ppm.
Start-up preparation
Power on
Initial warm-up (about 25 seconds)
Detection mode
LED lamp function
Light off Light on Flashing
PW/TR ALM1 ALM2 SKIP
PW/TR ALM1 ALM2 SKIP
LED indication
0. 0 0
Display indication
LED indication Display indication
0. 5 0
PW/TR ALM1 ALM2 SKIP