Dew Point Sensor

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Picture of Industrial Dew Point Sensor for Dehumidification Dryer, -60~60°C

Industrial Dew Point Sensor for Dehumidification Dryer, -60~60°C

● Dew point range: -60~60°C ● Accuracy: ±2°C Td ● Withstands pressure: 16 bar ● Dual signal output: 4-20mA/0-5V/0-10V, RS485

$745.85

Picture of Dew Point Transmitter for Compressed Air, -60~90°C

Dew Point Transmitter for Compressed Air, -60~90°C

● Dew point range: -60~90°C ● Accuracy: ±2°C Td ● Output types: Four types of parameter output ● Protection features: Anti-condensation, anti-interference

$1,068.68

Picture of High Temperature Dew Point Sensor, -20~100°C Dewpoint, 80~180°C Temp

High Temperature Dew Point Sensor, -20~100°C Dewpoint, 80~180°C Temp

● Dew point range: -20~100°C ● Dew point accuracy: ±3°C Td ● Output: 4 parameters simultaneously ● High-temperature application: Up to 180°C

$1,292.15

Picture of Thermocouple Dew Point Sensor, -45~120°C, IP55

Thermocouple Dew Point Sensor, -45~120°C, IP55

● Resolution: 0.01°C ● Dew point range: -45~120°C ● Parameters: 7 parameters measurement ● Unit conversion: One-click °C/°F conversion

$776.31

Picture of Portable Dew Point Sensor for Laboratory, -30~60°C

Portable Dew Point Sensor for Laboratory, -30~60°C

● Dew point range: -30~60°C ● Display: Color LCD screen ● Data storage: 99 groups ● Curve display: Real-time measurement curve

$1,132.15

Picture of Handheld Dew Point Sensor, -30~80°C, IP66

Handheld Dew Point Sensor, -30~80°C, IP66

● Dew point range: -30~80°C ● Protection level: IP66 ● Report generation: Automatic ● Measurement: 4 parameters simultaneously

$425.54

A dew point sensor is an instrument used to measure the temperature at which moisture in a gas begins to condense. It is widely used for monitoring compressed air systems, industrial dryers, HVAC equipment, and gas processing applications. Dew point sensors detect moisture levels by measuring dew point temperature and provide accurate data for preventing condensation, corrosion, and equipment failures.

How Does a Dew Point Sensor Work?

A dew point sensor works by detecting changes in water vapor concentration within a gas and converting the moisture level into a dew point temperature value. Most industrial dew point sensors use a moisture-sensitive sensing element to measure water vapor. The sensor detects humidity changes, processes the signal through internal electronics, and outputs the measured dew point value through analog or digital communication interfaces.

The basic measurement process includes:

Detecting moisture concentration in the gas
Calculating the dew point temperature
Converting the measurement into an electrical signal
Transmitting data to a monitoring or control system

Common output signals include 4-20mA, 0-10V, RS485 Modbus, and digital communication signals.

How to Choose a Dew Point Sensor?

Selecting the right dew point sensor depends on the measurement range, accuracy, installation method, and application requirements. Consider the following factors.

Selection Factor	What to Consider
Dew Point Range	Choose a sensor with a measurement range suitable for your moisture monitoring requirements, such as compressed air, dryers, or high-temperature processes
Accuracy Requirement	Select the appropriate accuracy level based on whether the application requires general monitoring, process control, or precision measurement
Installation Method	Inline sensors are suitable for continuous monitoring, while portable and handheld models are ideal for field inspection
Output Signal	Select compatible outputs such as 4-20mA, 0-10V, or RS485 for connection with PLC, SCADA, or monitoring systems
Operating Environment	Consider temperature, pressure, condensation, and protection requirements to ensure reliable operation

Dew Point Sensor Types Comparison

Dew point sensors are available in different types to meet various moisture measurement requirements. The comparison table below highlights the key differences between industrial, online, high-temperature, and portable dew point sensors to help you select the most suitable solution.

Dew Point Sensor Type	Measurement Range & Accuracy	Key Features	Applications
Industrial Dew Point Sensor	Dew point: -60~60°C; Accuracy: ±2°C Td	16 bar pressure resistance, anti-condensation heating, RS485 and analog outputs	Dehumidification dryers, compressed air systems
Dew Point Transmitter	Dew point: -60~90°C; Accuracy: ±2°C Td	Multi-parameter display, 4-20mA/RS485 outputs, PLC and SCADA integration	Online moisture monitoring systems
High Temperature Dew Point Sensor	Dew point: -20~100°C; Accuracy: ±3°C Td	80~180°C high-temperature operation, anti-condensation design, stable measurement	Thermal processing, high temperature drying
Thermocouple Dew Point Sensor	Dew point: -45~120°C; Temperature accuracy: ±0.1°C	7-parameter measurement, K-type thermocouple probe, 0.01°C resolution	Laboratory testing, HVAC, field measurement
Portable Dew Point Sensor	Dew point: -30~60°C; Accuracy: ±1.5°C	Color LCD display, real-time measurement curves, 99 data storage groups	Laboratory analysis, mobile inspection
Handheld Dew Point Sensor	Dew point: -30~80°C; Temperature accuracy: ±0.1°C	IP66 protection, replaceable probe, 32,000 data records	Industrial maintenance, HVAC inspection

Dew Point Sensor Applications

Dew point sensors are widely used for moisture monitoring in compressed air systems, industrial gas applications, air dryers, HVAC systems, laboratories, and moisture-sensitive manufacturing processes. By providing accurate dew point measurements, they help prevent condensation, improve drying efficiency, protect equipment, and maintain stable process conditions.

HVAC Engineering

Laboratory

Semiconductor Manufacturing

Compressed Air