Duct humidity transmitter high 4-20 mA

Our channel humidity transmitter High with 4-20 mA current output offers a robust plastic housing with quick-release screws. The device reliably measures humidity and optionally temperature, with four switchable temperature measuring ranges available. The relative humidity is precisely measured by a digital humidity sensor housed in a durable plastic sintered filter. The transmitter can be calibrated and enables fine adjustment for maximum accuracy. Installation is simple and is carried out directly in the ventilation duct using the mounting flange included in the scope of delivery.

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	Data sheet Duct humidity transmitter high 4-20 mA
	Instruction manual Duct humidity transmitter high 4-20 mA
	Declaration of Conformity Duct humidity transmitter high 4-20 mA

Duct humidity transmitter - Supply and output
Output					4 - 20 mA
Power consumption					< 1,1 VA / 24 V DC
Voltage supply					15 - 36 V DC
Connection type					See connection diagrams
Duct humidity transmitter - General information
Load					Ra (Ohm) = (Ub -14 V) / 0,02 A
Sensors					Digital humidity sensor, optionally with integrated temperature sensor
Process connection					by means of plastic mounting flange and mounting brackets
Duct humidity transmitter - Humidity
Measuring element humidity					Digital humidity sensor (low hysteresis, high long-term stability)
Measuring range humidity					0 % RH to 100 % RH
Output humidity					4-20 mA
Accuracy humidity					± 2.0 % (20 % RH to 80 % RH) at +25 °C, otherwise ± 3.0 %
Long-term stability					± 1 % / year
Duct humidity transmitter - Temperature
Measuring element temperature					Pt1000 | Class B | DIN EN 60751
Measuring range temperature					Factory configuration: 0 °C to 50 °Cmulti-range switching with 4 switchable measuring ranges
Output temperature					4 - 20 mA
Accuracy temperature					typically ± 0.2 K at +25 °C
Duct humidity transmitter - Measured variable
Measured variable selectable					% RH (Relative humidity), °C + % RH (Temperature and relative humidity)
Duct humidity transmitter - Ambient conditions
Storage temperature					-35 °C to +85 °C
Operating temperature					-30 °C to +70 °C
Permissible air humidity					< 95 % RH, non-condensing air
Duct humidity transmitter - Certifications / Standards
Protection class					III (according to EN 60 730)
Protection type					IP 65 according to EN 60 529
Standards					CE conformity electromagnetic compatibility according to EN 61326 according to EMC Directive 2014/ 30/ EU
Duct humidity transmitter - Technical drawing
Duct humidity transmitter - Protection sleeve
Material					Polyamide
Ø (mm)					20
Length (mm)					55
Duct humidity transmitter - Housing
Material					Plastic, UV-resistant Material polyamide, 30 % glass bead reinforced
Dimensions (L/W/H) (mm)					72 x 64 x 37,8
Color					Traffic white (similar to RAL9016)
Electrical connection					0.14 - 1.5², via screw terminals on circuit board
Closure					with quick release screws
Screw connection					Cable gland, Plastic, M20x1,5, Strain relief, replaceable, max. 10,4 mm Ø Inner
Duct humidity transmitter - Important assembly instructions
Important assembly instructions					Installation using the mounting flange (included in the scope of delivery): Please ensure that the Ø of the mounting flange matches the Ø of the protection sleeve.
					To minimize measurement errors due to heat dissipation, place the probe shaft in the middle of the duct and make sure that the probe can be easily removed if necessary.
The device should only be used in pollutant-free, non-condensing air (< 95 % RH). The sintered filter protects the humidity sensor in outdoor and duct probes from dust, which can falsify the measurement result. Maintenance in the event of contamination is therefore important. Avoid touching the humidity element to prevent incorrect measurements.
Please lay the cable with a spare loop (5) and in such a way that no water can penetrate the sensor head. This allows you to extend the probe without disconnecting the electrical connection.
Duct humidity transmitter - Delivery
Delivery					Transmitter, Plastic flange MF-20-K, Operating instructions
Packing					individually packed in cardboard box