INSTRUCTION
i
Read this instruction before installation
and wiring of the product
COF
1
COF
Carbon monoxide (CO) transmitter
COF is a detector intended for demand-controlled ventilation in park-
ing garages and road tunnels etc. The detector measures the CO
concentration using an electrochemical method of measurement char-
acterised by high selectivity and accuracy even in low concentrations.
The output signal is a linear representation of the gas concentration.
Technical data
Supply voltage
12...28 V DC
Power consumption
20 mA
Method of measurement
Electrochemical
Outputs
4...20 mA, two-wire
0...10 V DC, three-wire
Calibration
Automatic zero adjustment, the unit must
be manually calibrated once a year
Ambient temperature
-10...+40°C
Ambient humidity
0...90 % RH
Protection class
IP56
Dimensions (WxHxD)
80 x 82 x 86 mm
Weight
0.190 kg
Material, casing
Polycarbonate
Type of gas
Carbon monoxide (CO)
Measuring range
0...300 ppm
Accuracy
±3 %
Lifetime sensor
~ 6 years
Installation
COF is recommended to be mounted in breathing height, about 150-180
cm above the floor. One detector is to be placed per 200-500 square
metres garage surface, provided that the surface is open (without any
”pockets”) and that there is continuous air flow. If there are any ”service
pits”, a COF should be installed in each pit. Install the detector at least
50 cm from ventilation ducts and room corners. The transmitter must be
mounted with the cable connection pointing up.
Wiring
The output signal is set via a jumper according to the figures below.
(+) 12...28 V DC
0...10 V DC
!
(+)
(-)
(+)
(-)
CONTROLLER
0...10 V DC
(+)
(-)
(+) 12...28 V DC
(-)
R = Max. 300 Ohm
CONTROLLER
4...20 mA
Control and alarm levels
We recommend using two alarm levels, pre-alarm and full alarm. In
case of a pre-alarm, the fans are to be set to full speed and strategi-
cally placed flashing lights are to be activated. In case of a full alarm,
strategically placed sirens are to be started, advising people to leave
the garage immediately. Recommended levels for these alarms:
Pre-alarm
50 ppm
Full alarm
100 ppm
This product carries the CE mark. For more information, see
www.regincontrols.com.
This product is TÜV-approved in accordance with VDI 2053.
Contact
AB Regin, Box 116, SE-428 22 Kållered, Sweden
Tel: +46 31 720 02 00, Fax: +46 31 720 02 50
www.regincontrols.com, [email protected]
8258H
APR 19
EN
