Crowcon Xgard Bright, Инструкции по установке, эксплуатации и обслуживанию

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Operation
21
English
3.3 Start up
When the Xgard Bright is powered up, the unit will perform internal
diagnostic checks whilst the display will show a Crowcon logo. This procedure
will be displayed for about 45 seconds followed by displaying a warming up
status for about 120 seconds.
Diagram 7: Start up and Warming up
If the diagnostic checks were successful, the gas status screen will be
displayed. In normal operation the gas level will be indicated on the display.
Use the supplied magnetic wand to select the Scroll key to move between the
information screens shown below.
Diagram 8: Gas status screen
3.4 Menu functions
From the gas display screen, use the supplied magnetic wand to select the
Enter/Menu key to show password screen.
Enter the password: ‘0000’ to display the following menu. Select the Scroll
key to change the displayed number, and the Enter/Menu key to move to the
next integer. Hold the Enter/Menu key for two seconds to enter the menu.
Use Scroll key to move down the menu options list and to change the numbers
in any screen. Hold the scroll key for 2 seconds to move up the menu options.
1. Zero: to zero the sensor.
2. Cal gas: to calibrate the sensor.
3. To main menu: returns the display to the main gas screen.
4. Set Alarm 1: to adjust the fi rst alarm threshold.
5. Set Alarm 2: to adjust the second alarm threshold.
Note: When Alarm 2 threshold is set lower than the Alarm 1 threshold
both alarms are falling, e.g. for oxygen when Alarm level 1 = 19.0 and
Alarm level 2 = 17.5.
When Alarm 1 is less then Alarm 2, both alarms are rising.
6. Clr Loc Alarm: to de-activate the ‘Sounder Out’ output (used to silence
alarms even if the gas level remains above the alarm thresholds).
7. Chn/Eng: switch between Chinese and English display.
8. Set 485 Addr: sets the node address of the detector for Modbus operation.
9. Test Relay: adjust the analogue output signal: Dec/OK to decrease, Add/
Back to increase. The alarm relays will activate at the appropriate point.
a. Adj Loop mA: errors in the zero-level analogue output signal can be
adjusted by up to +/-2mA.
Enter/Menu key Scroll key