ProSight High Temperature & Humidity Transmitter – Up to 180°C

 

The ProSight High Temperature & Humidity Transmitter – Up to 180°C Industrial Grade is an industrial-grade environmental measurement instrument designed to accurately measure temperature and relative humidity in high-temperature environments.

Unlike conventional temperature and humidity transmitters designed for normal indoor conditions, the LFH70 uses a split-probe design that allows the sensing probe to operate in environments from -40°C to 180°C. This makes it suitable for demanding applications where elevated temperatures would exceed the operating limits of conventional humidity transmitters.

It uses a PT1000 sensing element for temperature measurement and a high-temperature humidity-sensitive capacitor for relative humidity measurement. The humidity sensing element is designed for high-temperature operation and provides long-term stability, good humidity repeatability, strong anti-pollution characteristics, and resistance to electromagnetic interference.

Measured temperature and humidity information can be transmitted to control and monitoring systems through RS485, 0-10V, or 4-20mA outputs, depending on the selected configuration. The transmitter can therefore be integrated with PLCs, SCADA systems, HVAC controllers, building automation systems, and industrial monitoring platforms.

It also features a full-metal housing designed to provide a stronger structure and longer service life in harsh working environments. Optional modules include an LCD display, buttons, and alarm functions, allowing the transmitter to be configured for different monitoring and control requirements.

How Does It Work?

• The PT1000 temperature sensing element measures the temperature at the high-temperature probe location.
• The high-temperature humidity-sensitive capacitor measures the relative humidity of the surrounding environment.
• The sensing elements convert temperature and humidity conditions into electrical signals.
• Internal electronics process the sensor signals and generate corresponding measurement outputs.
• Temperature and humidity readings can be transmitted using RS485, 0-10V, or 4-20mA, depending on configuration.
• The output signals can be connected to PLCs, SCADA systems, HVAC controllers, building automation systems, or data acquisition equipment.
• The split probe allows the sensing point to be positioned in the high-temperature environment while the transmitter electronics remain outside the most demanding area, subject to the installation requirements and specified operating limits.
• Optional LCD and button modules can provide local indication and user interaction.
• Optional relay outputs can be used for alarm or control functions.
• The connected control system can use the temperature and humidity data to regulate ventilation, heating, cooling, drying, humidification, or other process equipment.

Why Choose this Product?

• High-temperature capability – The probe operating temperature range is specified as -40°C to 180°C, making it suitable for demanding high-temperature applications.
• Split-probe architecture – Allows high-temperature measurement using a separate sensing probe.
• Dual-parameter measurement – Measures both temperature and relative humidity.
• PT1000 temperature sensor – Provides accurate temperature measurement with a specified accuracy of ±0.2°C at 20°C, subject to the manufacturer's accuracy curve.
• High-temperature humidity sensing – Uses a humidity-sensitive capacitor designed for high-temperature applications.
• Full-range calibration – Temperature and humidity are calibrated across their measurement ranges for high accuracy.
• Strong long-term stability – The humidity sensing technology is designed for stable long-term operation.
• Good humidity repeatability – Supports consistent humidity measurement performance.
• Anti-pollution capability – The sensor's core coating provides strong resistance to contamination.
• EMI resistance – Designed with strong anti-electromagnetic-interference characteristics.
• Rugged metal housing – Provides a robust structure for harsh working environments.
• Flexible outputs – Supports RS485, 0-10V, and 4-20mA output options.
• Automation integration – Suitable for PLC, SCADA, HVAC, and building automation systems.
• Optional local display – LCD option allows measurement values to be viewed locally.
• Optional alarm functionality – Relay outputs can support alarm and control applications.
• Industrial versatility – Suitable for HVAC, cleanrooms, refrigeration, and other industrial environmental monitoring applications.

Benefits

• Enables temperature and humidity measurement in high-temperature environments.
• Extends environmental monitoring capabilities beyond standard room-temperature sensors.
• Provides reliable data for process monitoring and climate control.
• Helps maintain stable environmental conditions in demanding applications.
• Supports continuous temperature and humidity monitoring.
• Helps improve HVAC and industrial process control.
• Provides flexible integration with analog and digital control systems.
• Supports long-distance digital communication through RS485 applications.
• Enables easy integration with 4-20mA industrial control architectures.
• Supports voltage-based automation systems through 0-10V output.
• Helps identify changes in environmental conditions before they affect processes or equipment.
• Supports preventive maintenance and condition monitoring.
• Rugged construction helps improve durability in harsh environments.
• Strong anti-pollution characteristics support operation in challenging conditions.
• Good electromagnetic interference resistance supports reliable measurement in electrically noisy environments.
• Optional display and alarm functions provide additional monitoring and control flexibility.