Temperature and Humidity Sensor

Temperature and humidity sensors are essential tools that are used by experts to monitor environmental conditions. These sensors are known as hygrometers and calculate accurate readings of the air's humidity levels anytime, anywhere. But first, let’s understand humidity. Humidity is the amount of water vapour present in the air. Notably, humidity can influence both personal comfort and several industrial processes. Temperature and humidity sensors help to calculate the air conditions and gain precise control over the environmental air for various reasons. For example, the semiconductor industry must maintain the precise humidity levels for proper wafer processing. Other fields, such as incubators, respiratory devices, sterilisation equipment, and the handling of biological products, also treat humidity as a vital factor for proper functioning. Notably, water vapour’s presence can further impact several chemical, biological, and physical operations. But what you need to understand is that humidity temperature meters go beyond comfort and impact personnel health and safety, production cost, and industrial efficiency. A higher humidity level makes you feel the air warmer, and notably, this aspect impacts various industries, making the role of temperature humidity sensors essential.

Download Technical Datasheet

Working Principle of Temperature Humidity Sensor

Relative humidity sensors typically consist of a humidity-sensing component coupled with a thermistor for temperature measurement. In the case of a capacitive sensor, the sensing element takes the form of a capacitor. This design relies on detecting changes in the electrical permittivity of the dielectric material, allowing for the calculation of relative humidity values. In constructing a Resistive sensor, materials with low resistivity are employed. This resistive material, situated atop two electrodes, undergoes changes in resistivity that correspond to variations in humidity, thus enabling its measurement. Examples of resistive materials utilized in Resistive sensors include salt, solid electrolytes, and conductive polymers. In contrast, thermal conductive sensors are used to gauge Absolute humidity values, providing a different approach to humidity measurement.

Ambient Temperature Sensor

How to Choose the Ideal Temperature and Humidity Sensor for Your Project?

When selecting a temperature and humidity sensor, you must focus on some considerations to ensure a successful project and a longer product lifespan. Read below to know more to make an optimal choice:

Frequency Response Characteristics

The first thing you must measure is the specific frequency range with the help of the sensor's frequency response traits. It's vital that the monitoring conditions remain undisturbed within the allowed frequency range. Please note that the sensor response may have some delay; therefore, the sensor's frequency response should be high, and the range of the signal that can be measured must be wide. In contrast, if the sensor’s measurable signal frequency is low, the output frequency will be low as well.

Linear Range

When selecting a sensor, you must first ensure that its range meets the requirements and then identify the sensor type. The linear range is defined as the output range that is directly correlated to the temperature and humidity device input. Theoretically, sensitivity remains constant within this range. The broader the linear range of the sensor, the larger its range will be, ensuring a certain degree of measurement precision needed.

Stability

The stability of the temperature and humidity sensor refers to the ability to maintain consistency over time. The most significant factor that affects its long-term stability is the environment in which you use the sensor. Before buying one for your requirements, make sure to navigate its compatibility with the production.

Specifications
Plate Diameter 196 mm
Measuring Range 0 to 100 °C
Sensor PT100 Class A
Supply Voltage 12 to 24 VDC
Protection IP-67
Response < 15 secswith out filter
Protection IP-65 for Transmitter
Plate Height 110mm
Accuracy ±0.5 °C
Housing Electronics Poly carbonate watertight enclosure
Poly carbonate watertight enclosure 12 to 26 VDC
Housing ABS plastic watertight enclosure

Key Features

Here are the key features ensuring reliable performance for solar monitoring applications:

Fast, Stable & Accurate

Delivers excellent response time and precise humidity readings, boosting long-term stability.

IP65 Weatherproof Enclosure

Built for harsh outdoor conditions with durable, dustproof and waterproof protection.

Onsite Two-Point Calibration

Easy calibration process ensures high accuracy for field installations.

Loop Powered

Low power consumption with simple installation and wiring.

Best Price in India

Get Humidity Sensors at competitive pricing from Logics Power for solar plants.

Get a Quote

Contact us today for Humidity Sensor cost and expert guidance.

Frequently Asked Questions

Find answers to the most common queries below

A temperature and humidity sensor or hygrometer measures the amount of water vapour in the air and current temperature. This tool helps monitor the environmental conditions that are essential for and impact industrial, commercial, and residential applications.

These sensors are commonly used in semiconductor manufacturing, incubators, HVAC systems, food storage, pharmaceutical labs, sterilization equipment, climate control systems, and biological product handling.

More sensors use either capacitive, resistive, or thermal conductive technology. The capacitive design measures changes in dielectric permittivity, whereas the resistive design detects the changes in resistance of a humidity-sensitive material and the thermal design measures the humidity through heat conductivity differences.

The ideal temperature measuring range for this sensor is from 0 to 100°C using a PT100 Class A element.

You should consider frequency response, sensor linear range, environmental stability, accuracy, operating conditions, and protection rating.

Frequency response tells how quickly the sensors detect changes in the environmental humidity and temperature. Quick responses mean your device is more accurate to real-time measurements, especially in a dynamic environment.

The linear range is the range where the sensor output is directly proportional to the input. A wider linear range ensures accuracy and a broader measurement capability.

Since sensors are highly responsive to the air conditions, extreme environmental conditions such as humidity, dust, chemicals, and temperature directly impact long-term sensor stability. A sensor is for designing your environment for your production, but extreme conditions affect the sensors too.