WM261

Digital Relative Humidity & Temperature Transmitter, Wall Mount

The WM261 has been developed for high precision measurement of relative humidity and temperature. This transmitter is available with a range of outputs.

Caractéristiques produits

Designed for accurate measurement in a controlled environment
Temperature output scaling configurable on request
Linearization for a specific isotherm on request

Spécifications techniques

Performance

Measurement Range (RH)

0-100% RH

Measurement Range (T)

-20 to +80°C

Accuracy at 23°C
Humidity

<±2% RH (5–95% RH)

Accuracy at 23°C
Temperature

Pt100 1/3DIN direct ±0.2°C
Current output ±0.3°C

Stability - RH Sensor

<±1% RH/year

Response Time

<10 sec typical (for 90% of the step change)

Electrical output/input

Output Signal (RH)
Configurable on Request

4–20 mA
0–1, 0–5, 0–10 V

Output Signal (T)
Configurable on Request

4–20mA
3-wire 1/3 DIN Pt100 direct
0–1, 0–5, 0–10 V

Supply Voltage

Output 4–20 mA:	V + = 12–30 V DC
Output 0–10 V:	V + = 15–30 V DC
Output 0–5 V:	V + = 10–30 V DC
Output 0–1 V:	V + = 8–30 V DC

Load Resistance

Output 4–20 mA:	Rload< (Uv-9)/0.02
Output 0–10 V:	R > 10 kΩ
Output 0–5 V:	R > 5 kΩ
Output 0–1 V:	R > 1 kΩ

Current Consumption

2 x 20 mA max

Operating Conditions

Operating Temperature
   Probe
   Housing
   Storage

-30 to +85°C
-30 to +70°C
-40 to +70°C

Mechanical specification

Ingress Protection

IP65 (NEMA 4 level)

Housing Material

PPO + POM

Dimensions
Housing
Probe

880 x 80 x 34mm
L=85mm, ø12mm

Electrical Connections

Screw terminals

Weight

100g