Atmospheric Oil Mist Detection System
MULTIPLEX
AM8/JANUARY 2015
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Running Procedure
Part3-7
CHANGING THE NUMBER OF SENSORS
Setting up the QMI MULTIPLEX System CMU for a different number of Sensors.
The QMI MULTIPLEX can have a total of 12 Sensors plugged into it. The display will show 12
positions illuminated.
The number of Sensors in use can be adjusted by switches located on the back of the MP12
PCB v 3.2.
There is a 10 way Binary switch located on MP12 PCB v 3.2. Switches 1 to 4 are for the
number of Sensors to be set up.
Switches 1-4 are for the number of Sensors to be set up.
Sensors required
Switch 1
Switch 2
Switch 3
Switch 4
01
on
off
off
off
02
off
on
off
off
03
on
on
off
off
04
off
off
on
off
05
on
off
on
off
06
off
on
on
off
07
on
on
on
off
08
off
off
off
on
09
on
off
off
on
10
off
on
off
on
11
on
on
off
on
12
off
off
on
on
Switch 5 is for the oil mist range.
With Switch 5 set to
OFF
the range is from 0 up to 1.30mg/L
With Switch 5 set to
ON
the range is from 0 up to 2.00mg/L
After changing the set Switch from OFF to ON or ON to OFF, the alarm levels should be
adjusted for each channel.
Switch 6 should always be set to
OFF
.
Switch 7 should always be set to
OFF
.
Switch 8 should always be set to
OFF
.
Switch 9 is for Channel selection display.
Switch 9 is set to
OFF
the Monitor display will show Channels 1-12.
Switch 9 is set to
ON
the Monitor display will show Channels 13-24.
If a change is made to Switch 9, the Monitor will need to be reset by placing the magnetic
pen over the reset circle, or turning the key a quarter turn, and then back.
Switch 10 should always be set to
OFF
.
