65-2670-XX-04 M2A Transmitter Operator’s Manual
31
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.
A2 OffDy (alarm 2 off delay)
(0 sec.)
The amount of time the M2A delays turning off the alarm 2 circuit once
an alarm 2 condition passes. This parameter appears only if the alarm 2
relay reset setting is set to
SELF-RST
. It can be set in 1 second
increments from 0 - 60 seconds, in 1 minute increments from 1 - 15
minutes, and in 15 minute increments from 15 - 60 minutes.
ZeroSupp
(2 ppm)
The zero suppression feature helps prevent “jumpy” readings near the
fresh air reading.
For example, if the zero suppression is
2.0 ppm,
the M2A will display a
reading of 0 ppm for gas readings from -2 ppm to 2 ppm. 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
Parameter
(Factory Set Value)
Description
