ENMET AM-5150 - Manual (Page 15)

AM-5150 ENMET Corporation
13
5.2.1 Exit Maintenance Menu
Exit maintenance, by pressing the Exit appears on the display. Press the S ELECT button to return to the instrument Normal Gas
Display.
Example of Exit menu:
5.2.2 Zero Adjust
The ZERO function must be performed by exposing the AM-5150 instrument to clean fresh air. If the air at the sensor is in
question, use a cylinder of 20.9% oxygen to provide a clean air reference.
Enter the maintenance menu by pressing and holding M ENU button for 2 to 4 seconds. See Figure 7, AM-5150 Maintenance
Menu flow chart.
After entering the maintenance menu, Press the M ENU button until the Zero menu is displayed.
Press the S ELECT button to perform a Zero.
The display will alternate between Zero and PV: To abort Zero function press and hold M ENU button for 3 – 4 seconds,
Abort? will appear, press S ELECT button to return to Zero.
Press the S ELECT button to initiate a Zero adjustment.
An auto detect sequence is initiated. After 15 seconds, the AM-5150 will monitor the zero reading for stability.
If the reading stabilizes, within the pre-programmed perimeters, an automatic zero adjustment will be made.
Cal OK appears on the display and in 1 – 2 seconds, display will change to Span.
If you wish to Span the sensor press the
S ELECT button you are now ready to apply gas. Proceed to gas span step 2
If you wish to Exit the maintenance menu, press M ENU button until Exit is displayed, then press S ELECT button to return to
the instrument Normal Gas Display
If the reading does not stabilize, within 255 seconds, the procedure will be aborted. Sensor is outside of safe parameters to
be zeroed, the display will read Bad Zero. Repeat Section 5.2.2 Zero Adjust making sure to use a Zero gas of 20.9%
Oxygen.
ENMET part number 03296-209.
Example of Zero adjustment display:
N OTE : Software revision may cause variations of display output.
Exit
S ELECT Press the S ELECT button to return to the Normal Gas Display.
M ENU
Press the M ENU button to cycle through Maintenance Menus
OR
Zero
Cal OK
If the Zero signal is not within Preset Specs the AM-5150
will display Bad Zero and return to Zero menu
S ELECT
M ENU
Bad ZERO
If the Zero signal is within Preset Specs the AM-5150 will
display Cal OK momentarily then advance to Span menu
PV: 0 S ELECT
Press the S ELECT button to force Zero adjustment
Zero
Note: You can Press and H OLD the M ENU button to abort Zero
When Abort? appears press S ELECT button to
return to Zero menu
Abort?
S ELECT
M ENU