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Duct Sensors Climate+Air Quality


Passive duct sensor for measuring air temperature and other gaseous media of HVAC applications (e.g. in supply and exhaust ducts). Designed for connection to superior controls systems. The sensor can be mounted by means of a mounting flange. Combined with a thermowell, it can be used as an immersion temperature sensor as well.

Application/type Duct sensor, Immersion sensor
Purpose Measure values
Measured values temperature
Interface Passive, Active, 0..10 V, 4..20 mA
Sensor SI-Protection against permeation of humidity and mechanical stress (e.g. vibration), NTC10k, PT1000 DIN Kl. B, Ni1000 DIN Kl. B, PT1000 1/3 DIN, PT100 DIN Kl. B, Ni1000TK5000, PT100 1/3 DIN, NTC10k Precon, NTC10K Carel, NTC1,8K, NTC5K, NTC20K, LM235Z, DS18B20 1-wire, FeT/Staefa, passive
Output voltage 0..10 V, min. load 3 kΩ
Output current 4..20 mA, max. load 500 Ω
Operating range temperature (°C) -80..+260
Operating ranges temperature (°C) -50..+120, -50..+150, -50..+160, -80..+260
Output signal temperature scaling analogue output, 0..+50 °C, -50..+50 °C, -10..+120 °C, 0..+160 °C, 0..+250 °C
Operating range temperature enclosure (°C) -35..+70, -35..+90
Operating range humidity max. 85% rH short term condensation
Accuracy temperature ±0,2 K | ±0,1% of measured value (typ. at 21 °C), ±0,1 K (typ. at 0 °C), ±0,3 K (typ. at 0 °C), ±0,4 K (typ. at 0 °C), ±0,22 K (typ. at 25 °C)
Power supply 15..24 V = (±10%) SELV, 15..35 V = SELV, 15..26 V ~ SELV
Power consumption max. 0,5 W (24 V =), max. 1 W (24 V =), 0,8 VA (24 V ~)
Material in touch with media Sensor probe, Ø=8 mm, stainless steel V4A (1.4571), length 108 mm, length 158 mm, length 208 mm, length 258 mm
Installation length (mm) 100, 150, 200, 250
Enclosure shape B, aluminium
Protection (IP) IP66, according to EN 60529
Connection cable entry M20 for wire Ø=7 mm, terminal block, max. 1,5 mm²
Connection cable 2-wire, 3-wire, 4-wire
Mounting when used as duct sensors: please use mounting flange MF8 stainless steel, for use as immersion sensors please use immersion pocket THVA
Device length (mm) 78
Device width (mm) 70
Weight (g) 250
Comparison list