
TRANSMITTERS FOR CO2, CO AND TEMPERATURE
CO
transmitters
2
TRANSMITTERS TO DETECT
CARBON DIOXIDE (CO
• Measurecarbondioxide(CO2), carbon monoxide (CO) and temperature (T)
• Infraredmeasurementtechnology(NDIR)
• Automaticcalibrationeliminatesmaintenancerequirements
• CO2 Measurement ranges from 0…40,000 ppm (0…4 %vol)
• SuitableforCommercialandIndustrialapplications
2
)
where good indoor air quality is critical
• Analogoutputsignals
• Availablewithrelays,displayandalarms
• Powersupply24VDC/AC
• Rangeofapplication0…50°C(30...120°F)/0…95%RH

TRANSMITTERS FOR CO2, CO AND TEMPERATURE
BE PRECISE:
ADVANTAGES AT A GLANCE
Carbon dioxide (CO2) is a colorless and odorless gas that can only be detected with a measuring instrument and
which is dangerous and can be fatal for humans and animals in high concentrations. CO2 transmitters enable air
monitoring in commercial and residential buildings, underground garages and tunnels, hospitals, greenhouses,
transportation and storage areas.
CF5, CO2 AND TEMPERATURE TRANSMITTERS
Applications
For ventilation control in residential properties, offices, classrooms, cinemas, hospitals, etc.
Features
• Measurement range CO2: 0…3,000 ppm / temperature: 0…50 °C / 30...120 °F
• Measurement technique: infrared (NDIR) with automatic calibration
• Accuracy: ±30 ppm
• Power supply: 16...29 VDC/AC
• Output 1 (0...2,000 ppm): 0/2…10 VDC or 0/4…20 mA
• Output 2 (0...50 °C): 0/2…10 VDC or 0/4…20 mA
• Range of application: 0…50 °C (30...120 °F) / 0…95 %RH
• Maintenance: not necessary
• Lifetime: >15 years
Order code Description
CF5-W Installed in the environment to be monitored
CF5-W-Disp*
Dimensions: 120 x 82 x 30 mm
Enclosure protection: IP30
CF5-W-Disp
CF5-D Duct mount design for insertion into ducts and vents
CF5-D-Disp*
Dimensions: 142 x 84 x 46 mm / Probe 245 x 22 x 15 mm
Enclosure protection: IP65
* includes LCD display
CF5-D-Disp

TRANSMITTERS FOR CO2, CO AND TEMPERATURE TRANSMITTERS FOR CO
CF3, CO2 TRANSMITTERS
Applications
For ventilation control in residential properties, offices, classrooms, cinemas, public rooms, etc.
Features
• Measurement range: 0…2,000 ppm
• Measurement technique: infrared (NDIR) with automatic calibration
• Accuracy: ±30 ppm
• Power supply: 16...29 VDC/AC
• Output 1 (0...2,000 ppm): 0…10 VDC
• Output 2 (0...2,000 ppm): 4…20 mA (no output 2 in CF3-W-EU(US)-Disp-FLI)
• Range of application: 0…50 °C (30...120 °F) / 0…95 %RH
• Maintenance: not necessary
• Lifetime: >15 years
Order code Description
CF3-W-EU Installed in the enthronement to be monitored
and fits directly on standard EU surface-mounted boxes
CF3-W-EU-Disp*
Dimensions: 100 x 80 x 28 mm
Enclosure protection: IP30
CF3-W-US Installed in the enthronement to be monitored
CF3-W-US-Disp*
CF3-D Duct mount design for insertion into ducts and vents
CF3-D-Disp*
CF3-W-EU-Disp-FLI* Measures the CO2 concentration in rooms and emits an audible
CF3-W-US-Disp-FLI* Measures the CO2 concentration in rooms and emits an audible
*includes LCD display
and fits directly onstandard US surface-mounted boxes
Dimensions: 130 x 85 x 30 mm
Enclosure protection: IP30
Dimensions: 142 x 84 x 46 mm /
Enclosure protection: IP65
and visual alarm (fresh air indicator) when a value of 1,400 ppm is
exceeded. Mute button on the side of the housing. Fits directly on
standard EU surface-mounted boxes.
Dimensions: 100 x 80 x 28 mm
Enclosure protection: IP30
and visual alarm (fresh air indicator) when a value of 1,400 ppm is
exceeded. Red mute button on the front of the housing. Fits directly
on standard US surface-mounted boxes.
Dimensions: 130 x 85 x 30 mm
Enclosure protection: IP30
Probe 245 x 22 x 15 mm
CF3-W-EU-Disp
CF3-W-US-Disp
CF3-D-Disp
CF3-W-EU-Disp-FLI
CF3-W-US-Disp-FLI

TRANSMITTERS FOR CO2, CO AND TEMPERATURE
CF8, TRANSMITTERS FOR SPECIAL APPLICATIONS
Devices
Model AL (Alarm) is equipped with two relays that can be connected to an alarm system. It measures CO2 in very high concentrations.
Model GH (Greenhouse) is equipped with an extra dust and water filter and is suitable for adverse ambient conditions.
Applications
Model
Measurement range CO
Accuracy ±200 ppm
Temperature measurement range — 0…50 °C (30...120 °F)
Power supply 16...29 VDC/AC
Output 1 (0...4 %vol) 0/2…10 VDC or 0/4…20 mA
Output 2 (0...4 %vol) 0/2…10 VDC or 0/4…20 mA —
Output 2 (0...50 °C) — 0/2…10 VDC or 0/4…20 mA
Output 3 (CO2) Relay 1: open <1.4 %, closed >1.5 % Relay 1: open <1.9 %, closed >2.0 %
Output 4 (CO2) Relay 2: open <2.9 %, closed >3.0 % —
Dimensions 142 x 84 x 46 mm
Enclosure protection IP54
Range of application 0…50 °C (30...120 °F) / 0…95 %RH
Communication MODBUS
Maintenance Is not necessary for normal indoor applications.
Lifetime >15 years
Order code CF8-W-Disp-AL CF8-W-Disp-GH
2
Ventilation control in underground garages,
transport/storage, vehicle terminals, tunnels, etc.
AL (Alarm) GH (Greenhouse)
0…4 %vol (0…40,000 ppm)
Certain industrial applications require annual calibration.
Ventilation control in greenhouses and harsh
environments

TRANSMITTERS FOR CO2, CO AND TEMPERATURE
CF8, TRANSMITTERS FOR SPECIAL APPLICATIONS
Devices
Model CO (Carbon Monoxide) is suitable for closed rooms in which a combustion process takes place.
Model IN (Incubator) is suitable for measurements in incubators or climate chambers.
Applications Monitoring of carbon monoxide and carbon dioxide
in underground garages, tunnels, mines, latrge halls,
with relays for CO2 and CO alarm systems.
Model
Measurement range CO
Measurement range CO 0…100 ppm —
Accuracy CO
Accuracy CO ±10 ppm —
Power supply 16...29 VDC/AC
Output 1 (0...100 ppm CO) 0/2…10 VDC or 0/4…20 mA —
Output 1 (0...3 %vol CO
Output 2 (0...2,000 ppm CO
Output 2 (0...2 %vol CO
Output 3, relay open >35 ppm (CO) and >1'500 ppm (CO
Dimensions 142 x 84 x 46 mm Ø 40 x 102 mm
Enclosure protection IP54
Range of application 0…50 °C (30...120 °F) / 0…95 %RH
Communication MODBUS, RS-485 (optional) —
Maintenance Is not necessary for indoor applications.
Lifetime >5 years (limited by the CO probe) >15 years
Order code CF8-W-Disp-CO CF8-D/W-IN
2
CO (Carbon Monoxide)
0…3,000 ppm 0…3 %vol (0…30,000 ppm)
2
±30 ppm ±200 ppm
) — 2...10 VDC or 4...20 mA
2
) 0/2…10 VDC or 0/4…20 mA —
2
) — 0...5 VDC or 0...10 mA
2
)
2
closed <30 ppm (CO) and <1'400 ppm (CO
Industrial applications may require annual calibration.
)
2
Ventilation control in incubators
and environmental chambers
IN (Incubator)
—

TRANSMITTERS FOR CO2, CO AND TEMPERATURE
THE FUNDAMENTALS OF CO
Carbon dioxide (CO2) is a colorless and orderless gas that exists in the earth’s atmosphere and which is dangerous in high concentra-
tions. The proportion of CO2 in natural ambient air is about 0.04 % or 400 ppm. When humans and animals exhale this gas, it is quickly
mixed with the ambient air, as well as in rooms that are well ventilated.
A high CO2 content becomes apparent in humans through rapid fatigue and loss of concentration. The negative effects become
noticeable more quickly in small rooms in which there are many people or that are not well ventilated.
Modern climate control systems measure not only parameters such as relative humidity and temperature, but also CO2 content.
The concentration of CO2 is regarded as an impor tant indicator for the quality of room air.
2
Guidelines
350 - 450 ppm 400 - 1,200 ppm > 1,000 ppm 5,000 ppm
(0.5 %vol)
Fresh air outdoors Room air Fatigue and loss
of concentration
become apparent
Maximum permissible
value at the workplace
during an 8-hour
workday
38,000 ppm
(3.8 %vol)
Breathing air (direct
exhalation)
> 100,000 ppm
(10 %vol)
Nausea, vomiting,
loss of consciousness
and death
Measurement technique
The measurement technique is based on non-dispersive infrared (NDIR) technology.
Calibration
All sensors are calibrated they have a lifetime of more than 15 years in normal indoor applications.
The automatic baseline correction means the sensors require no further calibration.
Subject to technical change without notice. Printing and other errors reserved.
ROTRONIC AG, Grindelstrasse 6, CH - 8303 Bassersdorf, Tel. +41 44 838 11 11, Fax +41 44 836 44 24, www.rotronic.ch
ROTRONIC Instruments (UK) Ltd, Crompton Fields, Crompton Way, Crawley, West Sussex, RH10 9EE, UK, Phone +44 (0)1293 571000, Fax +44 (0)1293 571008, www.rotronic.co.uk
ROTRONIC Instrument Corp, 135 Engineers Road, Hauppauge, NY 11788, USA , Phone, +1 631 427-3898, Fax, +1 631 427-3902, www.rotronic-usa.com
59029E/2012-02