High-Temp 200°C Humidity Transmitter for Industrial Ovens & Drying Systems by HENGKO HG808-T5N4
HENGKO HG808-T5N4 Series is a high-precision temperature and humidity transmitter specifically
designed for industrial high-temperature environments.
It integrates ultra-heat-resistant sensing elements within a robust cast-aluminum housing and
stainless-steel structure, ensuring exceptional long-term stability, accuracy, and corrosion resistance.
Engineered to perform reliably in extreme conditions, the HG808-T5N4 maintains precise measurement
at temperatures up to 190 °C.
Typical applications include high-temperature process control, industrial drying systems, flue gas and
combustion monitoring, and environmental test chambers.
Additionally, it is well-suited for corrosive gas monitoring in petrochemical and refinery processes,
offering dependable data even under aggressive gas compositions.
Key Features
*Split or pipeline probe design with exceptional anti-contamination and oil-resistant performance for reliable operation in demanding environments.
*Dual signal outputs: RS485 digital output and two high-resolution analog channels for flexible integration.
*High-precision resolution: 15-bit analog output and digital output with selectable 0.1 or 0.01 unit resolution.
*Flexible data access with support for both single-register and multi-register read functions.
*Anti-condensation protection to maintain stable sensor performance under high humidity conditions.
*Comprehensive digital output simultaneously provides dew point, relative humidity, temperature, and PPM readings.
*Standard Modbus RTU protocol ensures seamless connection with PLCs, DCS systems, and various industrial configuration software.
*Wide voltage input range (10–28 V) with built-in overcurrent, reverse polarity, and industrial-grade ESD protection for safe and durable operation.
HG808 Data Sheet Details
Specification
Here’s a specification details for the HG808-T5N4 series Humidity Transmitter :
| Category | Specification |
|---|---|
| Temperature Range | -40 ~ +200°C |
| Humidity Range | 0 ~ 100% RH (Recommend < 95% RH) |
| Temperature Accuracy | ±0.1°C (@ 20°C) |
| Humidity Accuracy | ±2% RH (@ 20°C, 10 ~ 90% RH) |
| Power Supply | DC 10V ~ 28V |
| Power Consumption | < 0.5W |
| Analog Outputs | Humidity + Temperature: 4~20mA / 0-5V / 0-10V (one out of three) |
| RS485 Digital Output | Temperature, humidity, dew point, PPM (read simultaneously) |
| Resolution Ratio | 0.01°C / 0.1°C (optional) 0.01% RH / 0.1% RH (optional) |
| Baud Rate | 1200, 2400, 4800, 9600, 19200, 115200 (default: 9600 bps) |
| Acquisition Frequency | Fastest response: 1 second; other settings per PLC |
| Byte Format | 8 data bits, 1 stop bit, no check |
| Pressurization | 16 bar |
| Working Temperature | -20°C ~ +60°C, 0% RH ~ 95% RH (Non-condensation) |
| Probe Type | Split type: Probe 3 –Split type ：3A# / 3B# Probe 5 – Pipeline ：5A# / 5B# Probe 6 – Split type ：6A# / 6B# |
We offer 6 types of probes for the HG808 Humidity Transmitter, with each type available in both A and B versions,
providing a total of 12 probes for various application options.
Applications for Extreme Environments
Industrial operations often face extreme temperature and humidity challenges where standard transmitters fail to perform.
High-performance transmitters capable of operating above 200 °C or as low as –50 °C are essential for reliable monitoring and control across critical industries.
High-Temperature Applications (Above 200 °C)
*Industrial Ovens and Furnaces
Accurate temperature and humidity monitoring ensures consistent curing, drying, and heat-treating processes—vital for product quality in coating, ceramics, and metal processing.
*Power Generation
Measuring humidity in turbines and steam lines helps prevent corrosion and extend equipment life in thermal power plants.
*Chemical Processing
Precise environmental control in reactors, dryers, and pipelines enhances safety, reaction efficiency, and product purity.
*Semiconductor Manufacturing
Advanced transmitters maintain ultra-stable low-humidity conditions during photolithography, etching, and wafer processing, ensuring yield consistency.
*Glass Manufacturing
During melting, blowing, and annealing, stable temperature and humidity conditions are key to defect-free glass and uniform quality.
Low-Temperature Applications (Down to –50 °C)
*Cold Storage and Logistics
Continuous temperature and humidity monitoring in freezers and refrigerated warehouses preserves food quality and prevents spoilage.
*Cryogenic and LNG Systems
Reliable transmitters safeguard operations in superconductivity research and liquefied natural gas (LNG) handling, preventing ice formation and system failure.
*Climate and Environmental Monitoring
Deployed in Arctic regions or high-altitude stations, these sensors provide accurate data for meteorological and climate research.
*Aerospace and Defense Testing
Used for low-temperature simulation chambers, they verify material and component performance under real-world freezing conditions.
*Wind Turbine Icing Detection
Monitoring humidity and temperature on turbine blades helps detect icing early, avoiding efficiency loss and structural damage.
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