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Duct Sensor CO₂ / Temperature active, 0…5 V, 0…10 V, Probe length 7″ [180 mm], Probe diameter 0.78″ [19.5 mm]

Weight 0.60 lbs




Sensor type

air quality

Output signal

0…10 V, 0…5 V

Measuring range temperature
Accuracy temperature active
±0.9°F @ 70°F [±0.5°C @ 21°C]
Measuring range CO₂
0...5000 ppm
Accuracy CO₂
±(50 ppm + 3% of measuring value)
Operating condition air flow
min. 1 ft/s [0.3 m/s]|max. 33 ft/s [10 m/s]
self-calibration, Dual Channel
Sensor Technology
CO₂: NDIR (non dispersive infrared) dual channel
Cable gland
PA6, black
Medium temperature
30...120°F [0...50°C]
Ambient temperature
30...120°F [0...50°C]
Output signal active temperature
DC 0...5 V|DC 0...10 V
Output signal active CO₂
DC 0...5 V|DC 0...10 V
Output signal active note
output DC 0...5/10 V with jumper adjustable|voltage output: min. 10 kΩ load
Probe material
PA6, black
Probe diameter
0.78" [19.5 mm]
Probe length
7" [180 mm]
Power supply DC
15...24 V
Power supply tolerance DC
Power consumption DC
1.5 W
Power supply AC
24 V
Power supply tolerance AC
Power consumption AC
2.9 VA
Build-up of self-heating remark
Remark: Occurring draft leads to a better carrying-off of dissipative power at the sensor. Thus temporally limited fluctuations might occur upon temperature measurement.
Mounting type duct
Single Point
Application text
For CO₂ and temperature measurement in duct applications. Dual channel CO₂ technology with range 0...5000ppm. NEMA 4X / IP65 rated enclosure.
Measuring values
Sensor type
air quality
Housing type
Sensor powertype
Cable entry
Cable gland with strain relief Ø6...8 mm
Electrical connection
Removable spring loaded terminal block max. 2.5 mm²
Ambient humidity
max. 95% r.H. non-condensing
Mounting instruction
Mounting instruction - 71968-00001.D 22DTM-..
Degree of protection IEC/EN
Certification IEC/EN
IEC/EN 60730-1
Certification UL
cULus acc. to UL60730-1A/-2-9, CAN/CSA E60730-1:02/-2-9
Protection class IEC/EN
III safety extra-low voltage (selv)
Protection class UL
UL Class 2 Supply
Quality Standard
ISO 9001
Material short text
Duct CO2 5000+Temp Sensor V
Output signal
DC 0...5 V DC 0...10 V
UV resistant|cover: lexan, orange|base: lexan, orange|seal: 0467 NBR70, black
Optional accessories
Electrical connection note
Removable spring loaded terminal block max. 2.5 mm²
Product family
CAD data 3D
General remarks sensors
Sensing devices with a transducer should always be operated in the middle of the measuring range to avoid deviations at the measuring end points. The ambient temperature of the transducer electronics should be kept constant. The transducers must be operated at a constant supply voltage (±0.2 V). When switching the supply voltage on/off, onsite power surges must be avoided.
Information self-calibration feature CO₂
All CO₂ sensors are subject to drift caused by the aging process of the components, resulting in regular re-calibration or replacement units. However the dual channel technology integrates automatic self-calibration technology vs common used ABC-Logic sensors. Dual channel self-calibration technology is ideally suited for applications operating 24/7 hours such as hosiptals or other commerical applications. Manual calibration is not required.
Build-up of self-heating
Temperature sensors with electronic components always have a dissipative power which affects the temperature measurement of the ambient air. The dissipation in active temperature sensors shows a linear increase with rising operating voltage. This dissipative power should be taken into account when measuring temperature. As Belimo transducers work with a variable operating voltage, only one operating voltage can be taken into consideration, for reasons of production engineering. Transducers 0 to 10 V / 4 to 20 mA have a standard setting at an operating voltage of DC 24 V. That means, that at this voltage, the expected measuring error of the output signal will be the least. For other operating voltages, the offset error will be increased by a changing power loss of the sensor electronics. If a re-calibration should become necessary later directly on the sensor, this can be done by means of a trimming potentiometer on the sensor board.
General caution
The installation and assembly of electrical equipment should only be performed by authorized personnel. This device has been designed for use in stationary heating, ventilation and air conditioning systems and must not be used outside the specified field of application. Unauthorised modifications are prohibited. The product must not be used in relation with any equipment that in case of a failure may threaten human, animals or assets. Ensure all power is disconnected before installing. Do not connect to live/operating equipment.
Additional caution
Please comply with • Local laws, health & safety regulations, technical standards and regulations • Condition of the device at the time of installation, to ensure safe installation • This data sheet and installation manual

Installation instructions Download: Installation instructions

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