Oldham iTrans, User Manual

Page: 43 / 88

iTrans Fixed Point Single/Dual Gas Monitor Operation
(P/N: 77023554-1) iTrans User Manual 5-7
NOTE: Check and verify span setting
before starting a calibration.
NOTE: See Appendix D for a
complete list of factory default span
gases.
NOTE: Flow rate for calibration is
0.5 liter per minute (LPM) except for
NH
3
, ClO
2
, Cl
2
, NO
2
, SO
2
, and HCl
which require 1.0 LPM.
Figure 5-10. Apply CalGas Display
5.5.5. Changing Span Gas Concentration
The option after calibration is Span
Gas Concentration. The span option is
designated with a flashing “S” in the
status bit with the current span value
next to it. To change the span value,
place the magnetic wand over CH2
during the 10-second countdown. If
you do not place the magnet over CH1
during the 10-second countdown, the
will return to the Normal
Operating Mode. If you initiate the
change span option, the status bit will
start to flash and the
span
value can now be changed.
The current span value is displayed on
the top line of the LED display. To
increment the span value, pass the
magnetic wand over CH1. When the
desired value is reached, pass the
magnetic wand over CH2 to accept
and save changes. Passing over CH1
or letting the timer count down to zero
without saving the new value, will
take you back into the Programming
Mode.
Figure 5-11. Sample Span Gas
Concentration Display
Figure 5-12. Flashing Status Bit