Dew point monitor switching contact with display

The dew point monitor switching contact with display reliably detects the formation of condensation on cold surfaces such as cooling ceilings or cold water pipes. It measures temperature, relative humidity, and the resulting dew point temperature with high accuracy—without any conductivity-based sensors—and automatically activates the integrated switching output via a potentiometer (factory setting: 75%) when a preset limit value between 75 and 100% RH is reached. Integrated LEDs indicate the current switching status, while the display allows easy on-site checking of the measured values. Ideal for use in building automation, technical control rooms, HVAC systems, clean rooms, and wherever condensation must be reliably prevented.

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	Data sheet Dew point monitor switching contact with display
	Instruction manual Dew point monitor switching contact with display
	Declaration of Conformity Dew point monitor switching contact with display

Dew point monitor - Supply and output
Output					Counter, 1 A ohmic load
Power consumption					< 1,1 VA / 24 V DC; < 2,2 VA / 24 V AC
Voltage supply					24 V AC (± 20 %) | 15 - 36 V DC
Connection type					See connection diagrams
Dew point monitor - General information
Pressure type					Dew point temperature
Measuring range humidity					75% RH to 100% RH switchable via potentiometer (75% RH delivery state)
Sensors					Digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability
Sensor protection					Membrane filter
Long-term stability					± 1 % / year
Process connection					Endless belt with metal buckle, 300 mm, for pipes up to 3 '' (included)
Dew point monitor - Ambient conditions
Storage temperature					-35 °C to +85 °C
Operating temperature					-30 °C to +70 °C
Medium					clean air and non-aggressive, non-flammable gases
Dew point monitor - 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
Dew point monitor - Technical drawing
Dew point monitor - Housing
Material					Plastic, UV-resistant Material polyamide, 30 % glass bead reinforced
Dimensions (L/W/H) (mm)					Aluminum die casting
Color					Traffic white (similar to RAL9016)
Electrical connection					0.14 - 1.5², via screw terminals on circuit board
Display					Two lines, lighted For displaying the actual humidity and the switching status of the switching contact (overrange, underrange, probe break, probe short-circuit)
Cut-out Display (B/H) (mm)					ca. 36 x 15
Closure					with quick release screws
Cover					transparent
Screw connection					Cable gland, Plastic, M20x1,5, Strain relief, replaceable, max. 10,4 mm Ø Inner
Dew point monitor - Contact body
Conctact geometry					Block
Material					Aluminium
Length (mm)					62
Width (mm)					25
Height (mm)					15
Dew point monitor - Important assembly instructions
The dew point monitor is mounted directly onto bare metal pipes or smooth, grease-free surfaces such as cooling ceilings using a quick-release strap. To ensure reliable measurement of the dew point temperature, make sure there is good thermal contact with the surface and that the air flow to the sensor is unobstructed.
Dew point monitor - Delivery
Delivery					Transmitter, Quick-release strap, Operating instructions
Packing					individually packed in cardboard box