Relative Humidity Sensor With Analog Output – 3S-RH-I
Relative Humidity sensors are used to measure the actual humidity condition within the air at any given point or any given place. It measures the Humidity in Percentage (%). Relative Humidity measurements may be used to estimate changes in incident spectrum which may affect PV module power output as well as irradiance sensor readings. Humidity data with temperature data can also be used to calculate the Dew Point. This Relative Humidity Sensor Model is compatible with all Dataloggers, Gateways, and PLCs having Analog input port. It is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield.
The performance of the solar plant might be affected by spectrum fluctuations, which are estimated using relative humidity sensors. Relative humidity measurements can be utilized to identify changes in the incidence spectrum that may affect PV module power output and irradiance sensor readings, according to IEC61724-1:2021. Therefore, ambient temperature is the primary factor that determines relative humidity. Increased heat transfer from the cell surface and refraction of incoming sunlight are two effects of relative humidity on solar power plants. Finally, by integrating humidity data, the times of wetness caused by condensation can also be computed. These all demonstrate how relative humidity sensors affect solar system performance.
What is the working principle of Relative Humidity Sensor with analog output?
The Relative Humidity Sensor features a UV-resistant protective shield for a more accurate measurement of the ambient humidity. This protects the transmitter within. More specifically, the 4–20 mA output relative humidity sensor is specifically made for advanced climatic situations. An electronic card housed in a UV-resistant box detects relative humidity with great sensitivity and converts it to an output of 4–20 mA. This Relative Humidity Sensor model is compatible with all Dataloggers, Gateways, and PLCs having Analog input port.
Technical Specifications of Relative Humidity Sensor
| Item Code | 3S-RH-I |
| Measured Data | Relative Humidity |
| Sensor Type | Capacitive |
| RH Range | 0% to 100% |
| RH Accuracy | ±1% RH (20 … 70%) at 25 °C |
| RH Resolution | 0.1% |
| Data Output | Analog 4-20 mA |
| Power Supply | 12 to 30 V DC |
| Power Consumption | 30 mA @ 24 V DC |
| 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 – Membrane Filter |
| Shield Material | ABS |
| Standard | Class A according to IEC 61724-1:2021 (Relative Humidity) |
Where is 3S-RH-I used?
- Solar energy systems,
- Industrial areas,
- Production facilities,
- Storage areas,
- Assessing conditions in transportation vehicles,
- Controlling humidity to protect moisture-sensitive products and equipment.
How to install Relative Humidity and Ambient Temperature Sensor?
To make sure that every component is operating as it should, it is recommended that the system be tested at ground level before to installation.
To find the ideal location, the sensor should be placed away from any items that are dark, reflecting, or absorb heat. When installing a product on a rooftop, it is best to attach it on the side of the building that faces the direction of the predominant wind. Furthermore, the sensor shouldn’t be positioned next to any sources of heat, like chimneys or vents.
There are two stages to sensor installation. The mounting structure for the relative humidity sensors must first be installed. The sensors must then be attached to the mounting framework.
Why Choose Seven Relative Humidity Sensor?
- High Accuracy: Provides accurate wind direction data with little variation, guaranteeing the data’s dependability.
- Weather Resistance: Perfect for outdoor use, the plastic structure guarantees resistance to corrosion, UV deterioration, and other environmental influences.
- Shield: The device comes with a UV-resistant shield that protects the relative humidity and temperature sensors.
Frequently Asked Questions (FAQ)
1- What is the Class?
All 3S-RH-I sensors are Class A according to IEC 61724-1:2021 (Relative Humidity).
2- What is the warranty?
All 3S-RH-I sensors come with a 2-year warranty.
3- What is the price of relative humidity sensor?
The relative humidity sensor with analog output is between 250 and 300 EUR.
4- What are the delivery times?
- Small Orders (up to 5 pcs): approx. 2-3 weeks
- Bulk orders (up to 100 pcs): approx. 7-9 weeks
5- How do I set up the sensor?
Follow our user manual which include step-by-step instructions. The user manual link is https://www.sevensensor.com/files/d/en/3S_RH_AT_PS_User_Manual.pdf
6- Does the sensor include a cable?
Each unit comes with a 3 m LIYYC11Y PUR Cable (UV and weather resistant). Other lengths are available on request.