SEM161W/H - Wall Mount Humidity Transmitters: The SEM161 is a “smart” humidity transmitter sensor with a single or dual (SEM162) two wire (4 to 20) mA output. The design uses a digital sensor which plugs into the sensor stem. A 4 digit display option is also available. Available in Wall or Duct Mount.

Humidity Range (0 to 100) % RH Temperature Range (-30 to 100) °C (- 22 to 212) °F

Dew Point Range (-30 to 100) °C (- 22 to 212) °F (T amb – T dew point) (0 to 50) °C (32 to 122) °F

Output Type 2 wire (4 to 20) mA current loop Output range (4.0 to 20.0) mA

Output Connection Two Part Screw Terminal Maximum output 20.5 mA (in high burnout condition)

Minimum output 3.9 mA (in low burnout condition)

Accuracy (mA Out x 0.0005) or 5 uA (Whichever is the greater)

Loop Voltage effect 0.2 uA / V Thermal drift 1 uA / °C

Maximum output load [(Vsupply-10)/20] K Ohms (Example: 700 Ohms @ 24 V)

DISPLAY OPTION

Type 4 digit (9 mm) Red LED

Ranges Humidity, Temperature, Dewpoint Resolution 0.1 % - 0.1 °C /°F

Update rate 800 mS

GENERAL SPECIFICATION

Update time 3 Seconds Start up time 10 seconds ( I out < 4 mA during start up)

Power Supply (10 to 30) Volts dc (15 to 30) Volts dc with display

ENVIRONMENTAL

Probe

Ambient operating range (-30 to +100) °C Ambient humidity range (0 to 100) % RH

Datasheet