30
65-2640RK-05-04 M2A Transmitter Operator’s Manual
4.
When you have scrolled through all the adjustable parameters, SAVE IT? YES/NO
appears on the display.
5.
If you do not wish to save the adjustments and want to exit Configuration Mode,
press and release the DOWN/NO button. The DO OVER? YES/NO message will
display. Press and release the DOWN/NO button. The ABORT? YES/NO message
will display. Press the UP/YES button to return to normal operation.
If you wish to change some of the adjustments made, press and release the DOWN/
NO button. The DO OVER? YES/NO message will display. Press and release the UP/
YES button. The Re-do Config message will display and the M2A will return to the
first adjustable parameter. Go back to step 3 and continue.
If you wish to save the adjustments made, press and release the UP/YES button.
Config Saved
is indicated on the display for a few seconds and the M2A returns to
normal operation.
ZeroSupp
(2% LEL)
The zero suppression feature helps prevent “jumpy” readings near the
fresh air reading.
For example, if the zero suppression is
2.0% LEL,
the M2A will display a
reading of 0% LEL for gas readings from -2% LEL to 2% LEL. It is
settable from 0 to 6% of the detection range.
FILTER
(5 secs)
The filter feature helps “smooth out” jumpy or noisy signals from the
detector. You can set the filter from 0 seconds to 60 seconds in 5
seconds increments.
The displayed gas reading is the average reading over the previous time
period defined by the filter setting. So if the filter is set to 5 seconds, the
displayed gas reading is the average over the past 5 seconds.
CAL Time
(15 mins)
The calibration time-out sets the amount of time after the last button push
while in Calibration Mode that the M2A will wait before returning to
normal operation. If the calibration time-out is set to
15 mins
, then M2A
will return to normal operation automatically 15 minutes after the last
button push.
Auto Zero
(Enabled)
If set to
Enabled
, the M2A’s firmware will monitor the zero (fresh air)
reading and make automatic zero adjustments under precisely specified
conditions if it determines that a reading change is due to normal sensor
drift.
If set to
Disabled
, the Auto Zero function is turned off.
Table 5: Configuration Parameters (Continued)
Parameter
(Factory Set Value)
Description
