ENMET EX-5130 User Manual
Page 11
EX-5130-IS
ENMET Corporation
9
5.2.1 Zero Adjust
A ZERO function should be performed only when the
EX-5130-IS
sensor/transmitter is exposed to fresh air. If the air
at the sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference. Attach the cylinder to the
calibration adapter.
Enter the maintenance menu by placing the magnet over
M
ENU
switch for 2 to 4 seconds. See Figure 5,
EX-5130-IS
Maintenance Menu flow chart.
The second menu available is the Zero.
Tap the
S
ELECT
switch to perform a Zero.
If the Zero is successful, Cal OK appears on the display and in 1 – 2 seconds, display will change to Span.
If you wish to Span the sensor Tap the
S
ELECT
switch you are now ready to apply gas. Proceed to gas span step 2
If you wish to Exit the maintenance menu, Tap
M
ENU
switch until Exit is displayed, then tap
S
ELECT
switch to
return to the instrument Normal Gas Display
If the Zero is Not successful, sensor is outside of safe parameters to be zeroed, the display will read Bad Zero.
Repeat Section 5.2.1 Zero Adjust making sure to use a cylinder of 20.9% Oxygen.
5.2.2 Gas Span
It is recommended that the Zero Function be performed first.
Enter the maintenance menu. See Figure 5,
EX-5130-IS
Maintenance Menu flow chart.
1.
Tap the
M
ENU
switch once to show Span on the display.
2.
Tap the
S
ELECT
switch to perform a Span procedure. The display will alternate between the calibration gas
concentration and a signal level.
3.
Attach the associated calibration gas cylinder to the regulator and calibration cover. See to Figure 3.
4.
Open the valve to apply the calibration gas to the sensor.
5.
Watch for the signal level to stabilize. Refer to Table 4 for typical response times.
6.
Once the signal level has stabilized, the
EX-5130-IS
will automatically lock in the calibration data and:
If the Span is successful, Cal OK appears on the display momentarily, then advances to Alarm 1. Remove
calibration gas. To exit maintenance menu tap the
M
ENU
switch until Exit appears, then tap the
S
ELECT
switch.
If the sensor is outside of acceptable parameters, Bad Span is displayed momentarily, then returns to Span.
Remove calibration gas. Tap the
M
ENU
switch until Exit appears, then tap the
S
ELECT
switch. Check span gas
and repeat calibration in 30 – 60 minutes.
If the sensor did not respond to gas, Same mV is displayed momentarily, then returns to Span.
Remove calibration gas, tap the
M
ENU
switch until Exit appears, then tap the
S
ELECT
switch and try
calibration again in 30-60 minutes.
If the sensor will not calibrate See Section 5.4.
N
OTE
:
Some software revisions require the
S
ELECT
switch be tapped to accept the signal.
7.
Calibration is complete.
5.2.3 Exit Maintenance Menu
Exit maintenance, by tapping on the
M
ENU
switch until Exit appears on the display. Tap the
S
ELECT
switch to return
to the instrument Normal Gas Display.
N
OTE
:
You can change the Calibration Gas Level. H
OLD
the magnet over the S
ELECT
switch for 2 – 4 seconds
The M
ENU
switch changes digit indicated by underscore cursor
The S
ELECT
switch locks underscored digit and moves to next digit