co2 monitor controller 24v
DESCRIPTION
cO2_Monitor_Controller_24VTRANSCRIPT
CO2 Monitor & Controller (24V)
OperationApplicationUpon powering up the unit, it will countdown to 0seconds before it begins reading. This is the initialwarm-up stage.
The measured temperature and the relativehumidity is then displayed on the upper line of theLCD and the measured level of CO2 in parts permillion will be displayed below that.
Please note: when the unit is first turned on (orfirst used after a long period without use - a monthor more) the warm up time should be 24 hours.
The Duomo CO2 Monitor & Controller is used tomonitor room CO2 level, as well as roomtemperature and humidity. It provides one on/offvolt-free relay output to control a ventilator withfour CO2 levels preset and features both an audiblealarm and a three colour backlit switching alarmdisplay. It is available as a bespoke or pre-configured unit;
CO2MC -R (Classrooms)
CO2MC -K (Kitchens)
CO2MC -L (Laboratories)
24V AC/DC supply voltage3 colour LCD backlight indicating ventilationrequirement based on CO2 measurementNon dispersive infrared sensing technologyVolt-free relay output to control a ventilatorDigital display of carbon dioxide levels (ppm)Temperature and humidity monitoringDual alarm indication; audible alarm andbacklight colour switchProgrammable setpointsBespoke or preset configurations
Carefully read the following instructions prior toinstallation of this device. Always keep thispamphlet for future reference.
i
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Green - Yellow setpoint: 1000ppmYellow - Red setpoint: 1500ppmRelay activation: Make in alarmRelay setpoint: 1400ppm
Green - Yellow setpoint: 1500ppmYellow - Red setpoint: 2800ppmRelay activation: Break in alarmRelay setpoint: 5000ppm
Green - Yellow setpoint: 1000ppmYellow - Red setpoint: 2800ppmRelay activation: Break in alarmRelay setpoint: 5000ppm
CO2 Monitor & Controller Dimensions & Wiring
Removing and replacing the enclosure
CO2 Monitor & Controller Fascia
AC/DC
Mounting and dimensions Wall mount wiring
85mm 38.5mm
84mm
9.5mm4.2mm
60mm60mm
130mm
Switch
Monitor & Controller
poor air quality
relative humidity
%
oC
oC
0 30
22
18
28
24
70
0
0
winter temperature
summer temperature
optimal air quality
moderate air quality
CO2
CO2
99
50
50
Power Output
PowerSupply
L1 L2
24V0V
N O T E : T h e a b o v evalues are defaultsand can be altered toyour requirements.
Green - optimal airquality (<1000ppm)
Yellow - moderateair quality (1001 -1400ppm)
Red - poor airquality (>1400ppm)
w: www.duomo.co.uk - e: [email protected] - t: 01905 797989 - f: 01905 774296 | © Duomo (UK) Ltd. 2007
Gas detected
Sensing element
Accuracy @ 25oC
Stability
Calibration interval
NDIR life
Response time
Signal update
Warm up time
CO2 measuring
range
CO2 display
resolution
Power supply
Consumption
Temperature sensor
Humidity sensor
Temperature measuring
range
Humidity measuring range
Relay output (optional)
Operating conditions
Storage conditions
Weight
Dimensions (mm)
Installation (mm)
Housing and IP class
Standard
Carbon dioxide (CO2)
Non-dispersive infrared
detector (NDIR)
± 60ppm + 3% of reading
< 2% of FS over life of
sensor (15 years typical)
ABC logic self calibration
algorithm
15 years
< 2 minutes for 90% step
change
Every 2 seconds
24 hours (first time), 5
minutes (operation)
0 ~ 5,000ppm
1ppm
10 ~ 24V AC
3.5W max. : 2.5W average
NTC
HS series capacitive sensor
0 ~ 50oC (32 ~ 122oF)
0 ~ 99% RH
One volt-free relay output
Make or break at set threshold
(see configuration table)
Max. 3A @ 250VAC
0 ~ 50oC (32 ~ 122oF)
0 ~ 95% RH, non-condensing
-40 ~ 70oC (-40 ~ 158oF)
200g
130 (H) x 85 (W) x 36.5 (D)
Desktop and wall mounting
(65 x 65 or 2" x 4" wire box)
PC/ABS fireproof plastic
material, protection class: IP30
CE Approval
Specification
Installation
Do not mount this unit;
behind a door,in a corner,near a heat source, diffuser or any steam source,in direct sunlight,near garbage bins,near gas ovens.
For wall mounting, please follow the steps on theprevious page. Cut off the power supply and place aflat head screwdriver deep inside of the hole on thebottom of the monitor casing, then depress the cliplightly to remove the face plate from the wall plate.Mount the back plate on the wall, 1.2 - 1.3m from theground (please see dimensions on previous page).
Connect wires to the terminal block making sure thatall connections are correct and secure. After finishingthe mounting of the unit, follow the steps to close thecover.
Settings
The value of CO2 at which the unit will go intoalarm can be altered by changing over the DIPswitches on the back of the unit (accessiblethrough a slot on the rear of the unit). This andmany other features can be altered beforeshipping. Please contact us to discuss your exactrequirement.
Dip 2 (Switch 1) Dip 2 (Switch 2) CO2 Level
OFF
ON
ON
OFF
OFF
ON
ON
OFF
800ppm
1000ppm
1200ppm
1400ppm
Dip 1 (Switch 1)
Dip 1 (Switch 2)
Programme Mode Normal Mode
o Celciuso Fahrenheit
OFFON
w: www.duomo.co.uk - e: [email protected] - t: 01905 797989 - f: 01905 774296 | © Duomo (UK) Ltd. 2007
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