Relative Humidity Meter PCE-P18 4…20 mA

Measures temperature and humidity / output as a 4 … 20 mA signal / compact

Modbus RTU interface / wall mounting

The humidity sensor PCE-P18 is used in HVAC technology to monitor humidity and temperature. The measured values ​​are output by the humidity sensor PCE-P18 as a standard signal 4 … 20 mA. In this compact humidity sensor, air humidity and temperature are precisely determined using a semiconductor component. For commissioning, the humidity sensor PCE-P18 is supplied via a DC voltage. The measured variables are output via a two-wire line. All connections are made via screw contacts in the waterproof IP 65 housing. In addition to the output of the measurement signal as a 4 … 20 mA signal, the measurement values ​​can be output via the RS485 interface. This function is particularly useful if several measuring points are to be linked to one another during your home surveillance.

– Humidity and temperature sensors
– 4 … 20 mA output
– simple wall mounting
– RS-485 interface
– for permanent monitoring
– various filters available
– small dimensions
– Modbus RTU

Technical data humidity sensor PCE-P18
humidity
measuring range	0 … 100% RH
accuracy	± 2% (in the range 10% …. 90% RH) ± 3% (remaining range)
hysteresis	± 1% RH
temperature
measuring range	– 20 … 60 ° C
accuracy	± 0.7% of the measuring range
temperature effect	± 25% / 10 ° C
Humidity sensor output
analog output	4 … 20 mA
Max. connectable resistor at the output	≤ 500 Ω
Data Interface	RS-485 Modbus RTU
transfer mode	8N1, 8N2, 8E1, 8O1
baud rate	4800 bps 9600 bps 19200 bps 38400 bps 57600 bit / s
General technical data for humidity sensors
supply voltage	19 V … 30 V DC
power	<1.5 W
ambient temperature	– 30 ° C … 85 ° C
Max. humidity	≤ 95% RH
preheat	15 minutes
degree of protection	IP 65
Assembly	wall mounting
Dimensions (wxhxd)	> 35 x 58 x 118 mm
Weight	125 g