Temperature & Humidity Sensors for Environmental, Industrial & Agricultural Monitoring

NiuBoL provides temperature and humidity sensors for atmospheric monitoring, automatic weather stations, greenhouses, warehouses, industrial environments, building monitoring and agricultural applications.

The product range includes air temperature and relative humidity sensors, combined temperature-humidity-pressure sensors, wall-mounted transmitters, sensors with local displays, photovoltaic module temperature sensors and crop or leaf microclimate sensors. The correct product depends on what needs to be measured and where the sensing point is installed.

Depending on the selected model, local signal options can include RS485 Modbus, 4–20mA or other outputs. Remote 4G, Ethernet, Wi-Fi or LoRaWAN communication normally requires a compatible data logger, RTU or IoT gateway rather than being provided directly by the basic sensor.

How to Choose a Temperature or Humidity Sensor

Temperature and humidity sensors should be selected according to the actual measured object. Outdoor atmospheric temperature is different from photovoltaic module surface temperature, while room humidity monitoring has different installation requirements from a weather-station sensor exposed to outdoor airflow.

Air Temperature vs Surface Temperature

Air temperature and surface temperature are different measurements and should not be treated as interchangeable. An atmospheric sensor measures the surrounding air, while a surface-contact temperature sensor measures the temperature of a specific object such as a photovoltaic module.

Outdoor Air Temperature & Humidity Measurement

Outdoor air-temperature and humidity measurement requires more than simply placing a sensor outside. Direct solar radiation, nearby surfaces, poor airflow and heat sources can introduce measurement errors.

For meteorological applications, the sensing element should normally be installed where it can sample representative ambient air while being protected from direct radiation and precipitation by a suitable radiation shield or weather-protected structure.

Avoid mounting the sensor immediately beside walls, exhaust outlets, air-conditioning condensers, hot roofs or other surfaces that do not represent the target ambient environment.

Temperature, Humidity & Atmospheric Pressure Sensors

When temperature, relative humidity and atmospheric pressure are required at the same location, a combined three-parameter sensor can simplify installation and cabling compared with using separate instruments.

These combined sensors are useful for automatic weather stations, agricultural monitoring, environmental systems and other projects where several atmospheric parameters need to be collected by the same data logger.

RS485 Modbus vs 4–20mA

The output interface should be selected according to the receiving PLC, controller, RTU or data logger. Output availability varies by sensor model.

Remote Monitoring and IoT Integration

Temperature and humidity sensors provide local measurement signals. Remote cellular, Ethernet, Wi-Fi or LoRaWAN communication normally requires a compatible data logger, RTU or IoT gateway.

Temperature / Humidity Sensor → RS485 / 4–20mA → Data Logger / RTU / PLC → 4G / Ethernet / Wi-Fi / LoRaWAN → Cloud Platform or Private Server

This architecture allows the same type of sensor to be integrated into local PLC systems, automatic weather stations, greenhouse monitoring networks or remote environmental IoT projects without implying that every sensor contains its own wireless modem.

Temperature & Humidity Sensor Applications

Temperature and humidity sensors are used across meteorological, agricultural, industrial and building-monitoring projects, but the sensor structure and installation method should match the application.

Automatic Weather Stations   •   Environmental Monitoring   •   Greenhouses   •   Agriculture
Warehouses   •   Industrial Monitoring   •   Building Automation   •   Solar PV Monitoring

For complete meteorological systems, see the automatic weather station selection page. For greenhouse sensor combinations, see the greenhouse sensor selection guide.

How to Select a Temperature & Humidity Sensor

For correct product selection, first confirm what needs to be measured and how the sensor will be installed. Interface and communication requirements should be considered after the measurement point is defined.

Temperature & Humidity Sensor FAQ

Q1. What is the difference between a temperature sensor and a temperature-humidity sensor?

A1. A temperature sensor measures temperature only, while a combined temperature-humidity sensor measures both temperature and relative humidity at the same location.

Q2. Can the same sensor measure air temperature and photovoltaic module temperature?

A2. The measurement principles and installation methods are different. Ambient air temperature requires representative airflow and radiation protection, while PV module temperature requires suitable thermal contact with the module surface.

Q3. Why is a radiation shield used for outdoor air-temperature measurement?

A3. A radiation shield helps reduce measurement errors caused by direct solar heating and precipitation while allowing ambient air to reach the sensing element.

Q4. Do temperature and humidity sensors support RS485 Modbus?

A4. Selected NiuBoL models support RS485 Modbus. Other output configurations such as 4–20mA may also be available depending on the selected sensor.

Q5. Does the sensor itself include 4G or LoRaWAN?

A5. Basic wired sensors normally provide local outputs such as RS485 or analog signals. Remote 4G, Ethernet, Wi-Fi or LoRaWAN communication typically requires a compatible data logger or gateway.

Q6. Can several RS485 temperature and humidity sensors share one bus?

A6. Multiple compatible RS485 Modbus sensors can share a properly designed bus when each device has a unique address and the power supply, wiring topology and polling configuration are suitable.

Q7. Can the data be sent to a private server?

A7. Yes. A compatible data logger or IoT gateway can collect the sensor signal and transmit measurements to a cloud platform, SCADA system or private server using supported communication protocols.

Q8. What information is required for a quotation?

A8. Provide the required parameters, measurement range, application, installation method, output interface, cable length, quantity and the PLC, controller, data logger or gateway that will receive the sensor data.

Request a Temperature & Humidity Sensor Quotation

For product selection and quotation, provide the required parameters, measured object, expected temperature and humidity range, installation method, output signal, cable length, quantity and receiving PLC / RTU / data logger / gateway.

For complete remote monitoring systems, also specify whether a data logger, 4G communication, LoRaWAN gateway, solar power, cloud platform or private-server integration is required.