ENMET OX-2000 - Manual (Page 14)

ENMET Corporation TX2000 / OX2000
10
4.3 Calibration
Verify that the TX/OX 2000 is working properly by calibration, performed with the help of a calibration gas. If
the response is not adequate or when any of the following occur, perform a complete calibration.
♦ At least every 6 months for the
♦ Whenever the instrument has been exposed to high concentrations of gas.
♦ When an instrument has been stored for more than one month without use.
♦ When changing of sensors.
♦ If “DEF16” fault appears (measurement too negative).
Within the calibration menu, "visible and audio" alarms are not triggered.
“Calibration” menu consists of:
ƒ Setting the zero in clean air and the sensitivity with calibration gas. See Section 4.3.1
ƒ There is no zero adjustment for the OX2000. See section 4.3.2
4.3.1 TX2000 Calibration
Enter maintenance menu.
Press both switches at the same time for 5 seconds:
&
(During this time, measurement is displaying)
5 seconds later, the maintenance pictogram appears
• Release the switches
• At this time, the operator has 5 seconds to enter the
maintenance menus or the instrument returns to operation
mode.
· Then proceed with following
Press BACKLIGHT switch to toggle
between (PrG) and (CAL)
to continue See Sections:
4.2 for Programming
4.3.1A for Calibration
Figure 4: Entrance to Maintenance Menu Flow Chart
Do you want to reach
the menus?
N O
Y ES
ƒ No action on switches
ƒ Return to normal operation,
5 seconds later
ƒ Press ALARM switch 3 times
ƒ Maintenance pictogram is flashing
ƒ You have access to:
Calibration (CAL) and
Programming (PrG) menus.