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Relative Humidity Sensor With Modbus Output
The SEVEN Relative Humidity Sensor is specifically designed to measure relative humidity and ambient temperature, with an optional pressure measurement feature.
The sensor is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield with four aspirated plates that allow the air to pass freely.
Two models are available to meet different customer needs:
- 3S-AT&RH-MB: Measures Relative Humidity and Ambient Temperature. It can be connected to SEVEN Irradiance Sensor or Sensor Box models.
- 3S-RH/AT/PS-MB: Measures Relative Humidity, Ambient Temperature, and Pressure. It can be connected to the SEVEN Compact Weather Station.
The measured values can be transmitted to monitoring instruments, data loggers and other receiving units via the serial RS485 interface with MODBUS RTU protocol.
TECHNICAL DATA
Item Code | 3S-RH-I |
Measured Data | Relative Humidity |
Sensor Type | Capacitive |
Relative Humidity Range | 0% to 100% |
Relative Humidity Accuracy | ±1% RH (20 … 70%) at 25 °C |
Relative Humidity Resolution | 0,1% |
Data Output | Analog 4-20 mA |
Power Supply | 12 to 30 V DC |
Power Consumption | 30 mA max @ 24 VDC |
Electrical Connection | 3 m LIYYC11Y PUR Cable, UV and Weather Resistant |
Operating Temperature Range | -40°C to +85°C |
Box Dimensions | 64 x 68 x 35 mm (W x L x H) |
Shield Dimensions | Ø 105 x 100 mm |
Weight | 0,5 kg |
IP Rating | IP 65 |
Box Material | ABS |
Sensor Housing Material | Stainless Steel Tube – Membran Filter |
Shield Material | ABS |
Standard | Class A according to IEC 60751:2022 (Temperature) Class A according to IEC 61724-1:2021 (Relative Humidity) |