The OHT is an outdoor humidity and temperature transmitter which measures the humidity and temperature of air.

The OHT converts the measurements into standard signals of 0-10 Vdc or 4-20 mA.

Available with or without display indicating both Temperature and Humidity on one display.

Ranges and humidity parameters are selectable via dip switches.

The LCD display simultainously shows the current values of each parameter on a clear, easy to read colour screen.

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Features

• Humidity and Temperature outputs, 2 x 4-20mA or 2 x 0-10VDC

• Available with or without display

• Humidity output 0-10 Vdc or 4-20 mA

• Temperature output 0-10 Vdc or 4-20 mA

• As an option passive direct temperature output can be made to order.
PT1000, PT100, NTC 10K, NTC 20K, NTC 1.8K, NI1000 etc (By Request)

• Humidity tolerance ± 2% at 20 to 80% rH

• Temperature tolerance ± 0,3K (+5°C to 60°C) + 1.5% f.s

• DIP switch on pcb to select Relative Humidity, Absolute Humidity, Dew Point or Enthalpy

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Models

OHT 010 010 
Humidity output 0-10 Vdc
Temperature output 0-10 Vdc
No display

OHT 010 010 D 
Humidity output 0-10 Vdc
Temperature output 0-10 Vdc
with Display

OHT 420 420 
Humidity output 4-20 mA
Temperature output 4-20 mA
No display

OHT 420 420 D 
Humidity output 4-20 mA
Temperature output 4-20 mA
with Display