22DTH-55M

22DTH-55M BELIMO | Alldatasheet

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Technical data sheet 22DTH-55M www.belimo.com 22DTH-55M • en-us • 2019-08-20 • Subject to change 1 / 5 Duct Sensor Humidity / Temperature For measuring the relative or absolute humidity and temperature in duct applications. Instead of the humidity signal, the enthalpy or the dewpoint can be selected as an output signal. With Modbus RTU communication and integrated 0 ... 10V outputs. Nema 4X / IP65 rated enclosure. Type Overview Type Output signal Output signal active temperature Output signal active humidity 22DTH-55M Modbus DC 0...5 V, DC 0...10 V DC 0...5 V, DC 0...10 V Technical Data Electrical Data Power supply DC 15...24 V, ±10%, 0.7 W Power supply AC 24 V, , ±10%, 1.8 VA Electrical connection Removable spring loaded terminal block max. 2.5 mm² Cable entry Cable gland with strain relief 2 x Ø6 mm (1/2" NPT conduit adapter included) Functional Data Sensor Technology polymer capacitive sensor with stainless steel wire mesh Communicative control Modbus RTU Output signal active note Output DC 0...5/10 V selectable with switch Application air Measuring Data Measuring values temperature relative humidity dew point enthalpy absolute humidity selectable via Modbus selectable via Modbus Attention: max. measuring temperature is restricted by max. fluid temperature (see Safety data) Measuring range absolute humidity 0...80 g/m³ selectable via Modbus Measuring range enthalpy 0...85 kJ/kg selectable via Modbus selectable via Modbus Accuracy temperature active ±0.9°F @ 77°F [±0.5°C @ 25°C]

Technical data sheet 22DTH-55M www.belimo.com 22DTH-55M • en-us • 2019-08-20 • Subject to change 2 / 5 Materials Cable gland PA6, black Housing cover: lexan, orange base: lexan, orange seal: 0467 NBR70, black UV resistant Safety Data Ambient humidity max. 95% r.H., non-condensing Medium humidity short-term condensation permitted Operating condition air flow max. 40 ft/s [12 m/s] Protection class IEC/EN III safety extra-low voltage (selv) Protection class UL UL Class 2 Supply EU Conformity CE Marking 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 Degree of protection IEC/EN IP65 Degree of protection NEMA/UL NEMA 4X Quality Standard ISO 9001 Safety Notes 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 humans, animals or assets. Ensure all power is disconnected before installing. Do not connect to live/operating equipment. Only authorised specialists may carry out installation. All applicable legal or institutional installation regulations must be complied during installation. The device contains electrical and electronic components and must not be disposed of as household refuse. All locally valid regulations and requirements must be observed.

Technical data sheet 22DTH-55M www.belimo.com 22DTH-55M • en-us • 2019-08-20 • Subject to change 3 / 5 Remarks 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. 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 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. 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 sensors due to harsh environmental conditions are not subject of the general warranty. Scope of delivery Scope of delivery Description Type Mounting flange for duct sensor 19.5 mm, Plastic A-22D-A34 Cable Gland with strain relief Ø6...8 mm 1/2" NPT conduit adapter Accessories Optional accessories Description Type Replacement filter, wire mesh, Stainless steel A-22D-A06 General Remarks Concerning Sensors Build-up of Self-Heating by Electrical Dissipative Power Application Notice for Humidity Sensors

Technical data sheet 22DTH-55M www.belimo.com 22DTH-55M • en-us • 2019-08-20 • Subject to change 4 / 5 Wiring Diagram ① and ⑤: Status LED ② red: Error ③ yellow: Tx ④ yellow: Rx Connectors ST+ / ST- are only used for sensor types which additionally have a passive resistance sensor element for temperature measurement. The adjustment of the measuring ranges is made by changing the bonding jumpers. The output value in the new measuring range is available after 2 seconds. The separate document Sensor Modbus-Register informs about Modbus register, addressing, parity and bus termination (DIP1: address, DIP2: baud rate, parity, bus termination) Connection via safety isolating transformer. Parallel connection of other 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. Wiring RS485 (Modbus RTU & BACnet MS/ TP) Detailed documentation Notes Wiring RS485

Technical data sheet 22DTH-55M www.belimo.com 22DTH-55M • en-us • 2019-08-20 • Subject to change 5 / 5 Dimensions Dimensions Type Probe length Weight 22DTH-55M 5.5" [140 mm] 0.57 lb [0.26 kg]