- Communicative
- communicative
- Communicative control
- BACnet MS/TP
- RS485 documentation
- The separate document, BACnet PICS, informs about the PICS, MAC addressing and bus Termination (DIP1 & DIP2).
- Measuring range temperature
- 30...120°F [0...50°C]
- Measuring range temperature active note
- selectable via BACnet|Attention: max. measuring temperature is restricted by max. medium temperature (see Safety data)
- Accuracy temperature active
- ±0.9°F @ 70°F [±0.5°C @ 21°C]
- Measuring range humidity
- 0...100% r.H.|selectable via BACnet
- Measuring range CO₂
- 0...2000 ppm|selectable via BACnet
- Accuracy humidity
- ±2% between 10 to 90% r.H. @ 70°F [21°C]
- 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]
- Calibration
- self-calibration, Dual Channel
- Sensor Technology
- CO₂: NDIR (non dispersive infrared) dual channel|r.H.: with stainless steel wire mesh filter
- 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 selectable with switch
- 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
- ±10%
- Power consumption DC
- 0.3 W
- Power supply AC
- 24 V
- Power supply tolerance AC
- ±10%
- Power consumption AC
- 6 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
- Measuring range enthalpy
- 0...85 kJ/kg|selectable via BACnet
- Measuring range dew point
- 0...200°F [-20...80°C]|selectable via BACnet
- Measuring range absolute humidity
- 0...80 g/m³|selectable via BACnet
- Application text
- For combined measurement of CO₂, relative humidity and temperature in the duct. Dual channel CO₂ technology. The measured values are output via BACnet. NEMA 4X / IP65 rated enclosure.
- Measuring values
- CO₂|temperature|relative humidity
- Sensor type
- air quality
- Housing type
- Duct
- Application
- Duct
- Sensor powertype
- active
- Communication
- BACnet MS/TP
- Cable entry
- Cable gland with strain relief 2 x Ø6 mm (1/2" NPT conduit adapter included)
- Electrical connection
- Removable spring loaded terminal block max. 2.5 mm²
- Ambient humidity
- max. 95% r.H. non-condensing
- Scope of delivery
- 1/2" NPT conduit adapter
- Mounting instruction
- 22DTM US Mounting Instruction Sheet|Protocol Implementation Conformance Statement - Sensor BACnet
- Degree of protection IEC/EN
- IP65
- Degree of Protection
- IP65,
- Certification IEC/EN
- IEC/EN 60730-1
- Certification UL
- cULus acc. to UL60730-1A/-2-9/-2-13, 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+Temp+Hum Sensor BAC
- Output signal
- BACnet
- Housing
- UV resistant|cover: lexan, orange|base: lexan, orange|seal: 0467 NBR70, black
- Optional accessories
- A-22D-A06|A-22G-A01.1|A-22G-A02.1
- Electrical connection note
- Removable spring loaded terminal block max. 2.5 mm²
- Connection
- terminals
- Product family
- Sensor
- CAD data 3D
- Belimo_22DTM-16_3D.dwg|Belimo_22DTM-16_3D.dxf|Belimo_22DTM-16_3D.igs|Belimo_22DTM-16_3D.sat|Belimo_22DTM-16_3D.stp
- Notes box electrical installation
- Connection via safety isolating transformer. Parallel power connection of additional devices possible. Observe the performance data. The wiring of the line for BACnet MS/TP / Modbus RTU is to be carried out in accordance with applicable RS485 regulations. Modbus / BACnet: Supply and communication are not galvanically isolated. Connect earth signal of the devices with one another.
- 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.
- Application notice humidity sensors
- Refrain from touching the sensitive humidity sensor/element. Touching the sensitive surface will void warranty. For standard environmental conditions the manufacturing accuracy specified in the datasheet will be covered by the calibration warranty for two years. When exposed to harsh environmental conditions such as; high ambient temperature and/or high levels of humidity or presence of aggressive gases (i.e. chlorine, ozone, ammonia) the sensor element may be affected and readings may be outside specified accuracy. Replacement of deteriorated humidity sensor due to harsh environmental conditions are not subject of the general warranty.
- 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
Datasheet Download: Datasheet
Installation instructions Download: Installation instructions
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