User Manual SERVOPRO Plasma Trace N
2
Analyzer
7.0 OPERATION
remote monitoring system and also makes it faster to verify the hardware part for the 4 - 20 mA
signal isolation module.
NOTE: the analog output mode selected from the configuration menu ("track" or "hold") will
affect the 4 - 20 mA output. Set the analog output mode in "hold" for 4 - 20 mA output
verification. If not, the 4 - 20 mA will still track input gas value.
7.3.1 Error and Alarm Historic
This menu is very useful. You can see the last 25 alarms with the time and the date. Pressing
“F1” from the DIAGNOSTIC MAIN MENU brings you the newest errors and F2 the oldest.
For example, if a low flow error occurs at 9:34:37, the error and alarm historic menu will display
“Low Flow” message with the hour and the date. When the flow is restored, the same message is
displayed with “:OK”. For example, if the low flow is restored at 10:23:01, the error and alarm
historic menu will display “Low Flow: OK” like in Figure 11 with the date and the time.
FIGURE 11: DIAGNOSTIC MENU
Here possible errors thus their significance:
LOW FLOW: The flow on sample is smaller than 10 ml min
-1
(10 cc/min).
PLASMA OFF: The plasma is shut down. Occur when there is low flow since 30 seconds or
when the starting count is not reached.
STARTING: The plasma is trying to start.
WAITING: The system is waiting to preserve the valve. This error occurs 1 minute after the
plasma is turning off. The system waits 2 minutes before trying reopen the valve.
OVER SCALE: The impurities value is greater than scale.
UNDER SCALE: The impurities value is smaller than scale.
ALARM 1: Alarm 1 set point is reached.
ALARM 2: Alarm 2 set point is reached.
AUTCAL FAIL: This error occurs when the auto calibration failed.
Pressing “F1” brings you the newest errors and “F2”, the oldest.
F1:PREV|01) 03/07/08 LOW FLOW:OK 10:23:01
F2:NEXT|02) 03/07/08 LOW FLOW 9:34:37
|03)
F4:RET |04)
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