DF-8500 C Point type combustible gas detector with measuring range of 0~100%LEL
4 Operation
The device is factory-calibrated and delivered ready for installation. First
calibration is required after installation.
4.1 Startup
The device conducts self-checking during it starts up and sets the operating current
as output signal (default: 4.0mA), then displays below information:
Display testing
After power on, all segments on the display light, LED indicators are turned
on one by one as the sequence: green->red->red->yellow, and after all the
LED indicators light, the green LED starts to flicker.
Firmware version
The screen displays the firmware version.
Sensor type
COMB means what detected is combustible gases.
Measuring range
100, displayed on the screen means the measuring range is 100%LEL.
Alarm operation value
The display shows the preset alarm operation value. E.g.25 and 50 stands for
25%LEL and 50%LEL respectively.
Countdown
The screen displays the countdown of senso
r’s stability.
Normal operation
After countdown, the screen displays the gas concentration.
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Summary of Contents for DF-8500 C
Page 3: ...DF 8500C 0 100 LEL 1 1 1 DF 8500 C SUPREMA Gasgard XL 9010 9020 8020 1 2 4...
Page 4: ...DF 8500C 0 100 LEL 1 3 10 V V 21 V V 5...
Page 5: ...DF 8500C 0 100 LEL 1 4 1 2 12 2 2 1 1 DF 8500 C 6...
Page 7: ...DF 8500C 0 100 LEL 3 3 1 3 1 1 mm 3 DF 8500 C 8...
Page 12: ...DF 8500C 0 100 LEL 4 4 1 4 0mA LED LED COMB 100 100 LEL 25 50 25 LEL 50 LEL 13...
Page 20: ...DF 8500C 0 100 LEL 4 3 1 1 4 2 2 M 01 4 2 2 M 02 OFF 4 4 4 0000 1 2 ON 3 4 21...
