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Duct Sensors Climate+Air Quality


Immersion sensor in the enclosure form B with an integrated thermowell for temperature measurement of liquids in HVAC applications (e.g. water lines or water tanks). Designed for connection to superior control systems. The type SFKH03 with a 70 mm neck pipe is designed for applications using insulation materials.

Application/type Immersion sensor, Duct 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 5 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..+300 °C
Operating range temperature enclosure (°C) -35..+70, -35..+90
Operating range humidity max. 85% rH short term condensation
Operating range pressure max. 40 bar
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 typ. 0,5 W (24 V =), typ. 1 W (24 V =), 1,4 VA (24 V ~)
Material in touch with media Sensor probe, Ø=8 mm, stainless steel V4A (1.4571), SW24, G1/2", Neck pipe, (optionally), stainless steel V2A (1.4305), Ø=15 mm, length 70 mm, suitable for usage in aggressive media
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
Device length (mm) 78
Device width (mm) 70
Comparison list