ENMET AM-5150 - Manual (Page 16)

AM-5150 ENMET Corporation
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5.2.3 Gas Span
It is recommended that the Zero Function be performed first.
Do not perform a calibration unless span gas is applied to sensor. Calibration can be aborted by pressing and holding the M ENU
button for 3 – 4 seconds.
Enter the maintenance menu. See Figure 7, AM-5150 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 (Example: 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 8 calibration adapter.
4. Open the valve to apply the calibration gas to the sensor.
An auto detect sequence is initiated after 30 seconds, the
AM-5150 will monitor the cal reading for stability.
5. Watch for the signal level to stabilize. This should take about 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.
To exit cal, press
M ENU button until Exit appears and press S ELECT button
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 5.3 for sensor replacement.
7. Remove the calibration gas.
8. Press the M ENU button to advance to Exit menu or desired menu.
N OTE : Software revision may cause variations of display output.
Example of Calibration Display:
N OTE : To abort calibration. Press and H OLD the M ENU button to abort Calibration
When “Abort?” appears press S ELECT button to advance to desired menu
Abort?
S ELECT
M ENU
OR
M ENU
PV: 0
20
Apply Cal Gas until signal value becomes stable
(about 1 to 4 minutes) See Figure 8 Calibration Adapter
When cal signal is stable AM-5150 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 AM-5150 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
N OTE : To change calibration gas level. 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
S ELECT 20