The relative humidity meter can be used to monitor air humidity and temperature in HVAC engineering. The relative humidity meter releases the measured indicator as a standard signal 0…10 V (not galvanic isolated). Air humidity and temperature are detected accurately due to a semiconductor. For operation the relative humidity meter is supplied via direct current. The measuring data is then shown via a two-wire line. All connections are made via screwed-contacts with water-proof IP 65 enclosure.
Aside from displaying the signal as a 0…10 V signal the measuring data can also be read through a RS485 interface. This feature is especially useful if different measuring points are to be connected during your building monitoring. For further information about the relative humidity meter please read the following technical data or use our contact form. Our engineers and technicians will gladly advise you regarding the relative humidity meter PCE-P18-3 or any other of PCE Instruments product in the areas of regulation and control or scales and balances.
Technical data humidity sensor PCE-P18-3 | |
Humidity | |
Measuring range | 0 ... 100 %RH |
Accuracy | ±
2 % (for range of 10 % .... 90 % RH) ± 3 % (residual range) |
Hysteresis | ± 1 % RH |
Temperature | |
Measuring range | - 20 ... 60 °C |
Accuracy | ± 0.5 % of measuring range |
Temperature influence | ± 25 % / 10 °C |
Output humidity sensor | |
Output signal | 0...10 V |
Data interface | RS-485 Modbus RTU |
Mode of transmission | 8N1, 8N2, 8E1, 8O1 |
Signal rate | 4800
Bit/s 9600 Bit/s 19200 Bit/s 38400 Bit/s 57600 Bit/s |
General technical data humidity sensor | |
Voltage supply | 19 V ... 30 V DC |
Power | < 1.5 W |
Surrounding temperature | - 30 °C ... 85 °C |
Max. air humidity | ≤ 95 % RH |
Preheating time | 15 minutes |
Protection grade | IP 65 |
Montage | wall montage |
Measures (AxHxD) | 35 x 58 x 118 mm |
Weight | 125 g |