Multi-funtional duct sensor
For humidity, temperature, pressure, differential pressure and volume flow for monitoring and controlling heating, ventilation and air-conditioning systemsPREMASGARD® 814x-Modbus
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Electronic hygrostat and humidity sensor HYGRASREG® KH - 40 with one switching output, adjustable switching threshold and display for indicating actual humidity (accuracy class ± 2.0 % r.H.) and for setting the target humidity.
They are used to control and monitor the relative humidity, e.g. in ventilation and air conditioning ducts, laboratories, production facilities, climatic test cabinets, indoor swimming pools, greenhouses, etc. to control humidifying and dehumidifying equipment. These measuring transducers are designed for exact detection of humidity. The KH - 40 uses a digital, long-term stable sensor as a measuring element for measuring humidity. It is used in dust-free, unpolluted, non-aggressive air.
24 V AC (± 20 %) and
15…36 V DC
|Power consumption||< 1.1 VA/ 24 V DC ; < 2.2 VA/ 24 V AC|
digital humidity sensor
small hysteresis, high long-term stability
|Deviation of humidity||typical ± 2 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3 %|
|Output||potential-free changeover contact (24 V), 1 A ohmic load|
plastic sinter filter, Ø 16 mm, L = 35 mm, exchangeable
(optional metal sinter filter, Ø 16 mm, L = 32 mm)
|Setting range||5...95 % r. H.|
storage –35...+85 °C;
operation – 30...+75 °C, non-precipitating
by mounting flange, plastic
(included in the scope of delivery)
PLEUROFORMTM, material polyamide (PA6), with torsion
protection, Ø 20 mm, NL = 235 mm, vmax = 30 m/s (air)
(on request, optional stainless steel V2A (1.4301), Ø 16 mm)
|Electrical connection||0.14 - 1.5 mm² via terminal screws|
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
|Housing dimensions||72 x 64 x 43.3 mm (Tyr 1 with Display)|
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
|Long-term stability||± 1 %/ year|
|Protection class||III (according to EN 60 730)|
|Protection type||IP 65 (according to EN 60 529) housing only!|
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
two-line display with illumination, cutout approx. 36 x15 mm (W x H),
for displaying actual humidit and for setting the target humidity
The 1st line of the display shows the relative humidity.
The 2nd line shows on the left side the information
regarding the switching status of the relay (as a circuit),
as well as the switching value readout in % r.H.
on the right side (adjustable using the set potentiometer).
○ Circuit, empty = relay in idle state
● Circuit, full = relay energised
The relay output is triggered (contact 13 -11 closed) if the humidity
LED short pulses =
LED long pulses =
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