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Senseair aSENSE M III Duct Manual

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DI1
~
+
Fig. 3.Terminals and jumpers on aSENSE mIII Duct. The darker positions are default settings.
Numbers in figure 3
Label or marking
Function
3
Out(1)
CO-transmitter 0-100 ppm CO
4
Out(2)
CO
2
-transmitter 0-100 ppm CO
2
6, 7
Out(3)
Gas alarm CO >35 ppm or CO
2
>1500 ppm
8
Out(4)
Error detected or gas alarm
9, 10
DI 1
Extra terminal. Alarm test function (N.O.)
If more holes are needed the box has several drill markings for holes in two dimensions, PG7 and
PG9. Then fasten the cable entry bushing and seal properly. Never feed more than one cable through
each cable entry bushing, or else gas might leak through!
The PCB can be removed during the making of holes. The PCB must be handled carefully and
protected from electrostatic discharge!
Start-up of the aSENSE mIII Duct
Connect the power directly after mounting. The unit works best if the sensor is continuously powered.
The analogue outputs do not need to be connected before use. An internal delay function prevents the
alarm functions of the relay and OUT4 output during 2 minutes after power up. After short power
failures the CO measurements need this power up time to stabilize. The alarm outputs may be tested
after the 2 minutes delay by shorting the switch DI1. After long power failures the sensor may need
several days to restore the measuring functions.
NOTE:
The CO probe gives incorrect readings near some chemicals, e g silicone. This makes certain
environments unsuitable for the sensor.
DI1 Switch
for alarm test
Jumper for
configuring the
linear output start
point to 0% or
20% start point
Jumper to
choose
communi-cation
protocol
Jumpers to choose
between voltage or
current outputs
Jumper to choose
between open collector
or 0-10V linear signal
Senseair
®
AB (headquarter)
Stationsgatan 12 Phone: +46-(0)653 - 71 77 70
Box 96 E-mail: info@senseair.com
824 08 Delsbo
SWEDEN Web site: www.senseair.com
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