ENMET PID-Guard - Manual (Page 15)

PID-G UARD ENMET Corporation
13
Enter the maintenance menu. See Figure 7, PID-G UARD Maintenance Menu flow chart.
1. Press the M ENU button until Span display.
2. Press the S ELECT button to perform a Span procedure.
The display will alternate between the calibration gas concentration ( Cal 20 ) and a signal level ( PV ).
To Abort calibration press and Hold M ENU button for 3 – 4 seconds, Abort? will appear, press S ELECT button to return to
Span.
To change calibration gas level to be used, press and Hold
S ELECT button for 3 – 4 seconds, use menu button to change
digit and select button to move to next digit.
3. Attach the associated calibration gas cylinder to the calibration adapter. See Figure 6 calibration adapter.
4. Open the valve to apply the calibration gas to the sensor.
An auto detect sequence is initiated after 30 seconds, the
PID-G UARD will monitor the cal reading for stability.
5. Watch for the signal level to stabilize. 1 – 4 minutes.
6. Once the signal level has stabilized,
If the Span is successful, Cal OK appears momentarily, then will advance to Alarm1 menu.
If the sensor is outside of acceptable parameters, Bad Span is displayed.
If the sensor did not respond, an incompatible span gas was applied and the sensor did not respond at all,
Same mV is displayed then will return to Span.
If calibration is not successful, it is suggested that calibration be attempted again in 30-60 minutes.
If the sensor will not calibrate See Section 5.4.
7. Remove the calibration gas.
8. Calibration is complete.
Note: The instrument will return to operation mode in 3 – 5 seconds.
9. Press the M ENU button to advance to next desired menu
Example of Calibration Display:
S ELECT
You can Press and H OLD the S ELECT button to change the
Calibration Gas Level
-Use the M
ENU button to change digits
-Use the S ELECT button to move to next digit
N OTE : To abort calibration or change calibration gas level.
You can Press and H OLD the M ENU button to abort Calibration
When Abort? appears press S ELECT button to advance to
Alarm1 menu Abort?
S ELECT
20
M ENU
OR
OR
M ENU
PV: 0
20
Apply Cal Gas until signal value becomes stable
(about 1 to 4 minutes) See Figure 7
When cal signal is stable PID-G UARD will automatically update:
If cal is good display will indicate OK or Same and advance to
Alarm1
If cal is not within preset “range” display will indicate Bad Sens
or Same mV The PID-G
UARD will return to the Span Menu
To exit press M ENU button until Exit appears and press S ELECT
Cal OK
Span
S ELECT S ELECT
PV: 0
Same mV
Bad Sens
S ELECT