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Products Description
Nexisense HG808-H High Humidity Environment Temperature and Humidity Sensor
High Humidity MonitoringSolution for Extreme Conditions
The Nexisense HG808-H series temperature and humidity transmitter is speciallydesigned for 95%~98% high humidity environments. It offers high precision, strong stability, excellent compatibility, and anti-interference capabilities, widely used in industries such as food drying, pharmaceuticals, kilns, cleanrooms, agricultural engineering, and chemical production. It provides long-term, reliable environmental monitoring.
Product Definition: Industrial-grade Sensor for High Humidity Environments
The Nexisense HG808-H is a high humidity temperature and humidity transmitter specifically designed for high humidity environments, and its core advantages include:
Precision withoutdrift even in long-term 95%~98% RH saturated environments.
Built-in dew point calculation to handle condensation and steam fluctuation scenarios.
Multiple signal outputs including analog and digital signals to interface with various industrial control systems.
This is not just an extension of conventional environmental measurement instruments but a special tool designed for extreme humid and hot environments, filling a gap in theindustry.
Working Principle: Digital Sensor Driven + Intelligent Signal Algorithms
The Nexisense HG808-Hseries utilizes advanced digital temperature and humidity chips, with the core working principleas follows:
Humidity sensing is based on the change in capacitance due to water molecule adsorption, achieving high-resolution RH response;
Temperature sensing is achievedthrough a high-sensitivity thermistor, enabling rapid dynamic response;
A built-inmicroprocessor calculates and outputs dew point values, and the three data points (T/RH/dew point) are output via RS485 or analogsignals.
The internal signal processing algorithm incorporates condensation detection logic, nonlinear compensation, and drift correction mechanisms, ensuring measurement stability and accuracy even in real industrial environments.
Product Structure Analysis: Corrosion-Resistant and High Humidity-Tolerant Industrial Design
The HG808-H series adopts a modular industrial structural design, including the following parts:
Main Control Module: Integrates MCU, signal processing,and output module.
Detachable Probe Structure: The housing is made of stainless steel/corrosion-resistant materials and is equipped with a sintered metal filter cap, effectively blocking dustand water vapor.
Electrical Interfaces: Equipped with a standard M12 aviationconnector, reverse polarity protection, and electrostatic protection, improving deployment safety.
Optional Display Screen: Displays real-time temperature, humidity,and dew point information locally for easy debugging and monitoring.
This structure is tailored to continuous operation, high corrosion, and easy condensation environments, extending the product's overall service life.
Measurement Methodsand Output Solutions
The Nexisense HG808-H supports various output methods, making it fullycompatible with industrial automation systems:
Digital Output: RS485 Modbus RTU (default baud rate 9600), supporting real-time reading of temperature, humidity, dewpoint, PPM, etc.
Analog Output (Single Channel): 4-20mA, 0-5V / 0-10V (selectable via factory configuration).
The measurement process has the followingcharacteristics:
Sampling period as fast as 1 second;
Electromagnetic interference resistance for complex electrical environments;
Multiple resolution output options (0.01/0.1 level).
Applicable Scenarios and Industry Applications
Applicable Environmental Types:
High Humidity: Continuous saturated moisture environment (e.g., 95%~98% RH)
High Temperature: Measurement range from -40°C to +190°C
Corrosive, Dusty, and Condensation-Prone Environments
Typical Application Industries:
Pharmaceutical Workshops and Cleanrooms
Agricultural Drying and Greenhouse Monitoring
Operating Rooms and Medical Purification Systems
High Temperature Kilns/SprayingWorkshops
Cold Chain Logistics/Freezer Warehouses
Climate Laboratories/Environmental Test Chambers
Technical Parameters Table
| Item | Technical Parameters |
|---|---|
| Temperature Range | -40 ~ +190°C |
| Humidity Range | 0 ~ 98% RH (recommended < 98% RH) |
| Temperature Accuracy | ±0.2°C (@20°C); Optional ±0.1°C |
| Humidity Accuracy | ±2% RH (10–90% RH, @20°C); Optional ±1.5% RH |
| Power Supply | DC 10V ~ 28V |
| Power Consumption | < 0.5W |
| Analog Output (Single Channel) | 4-20mA / 0-5V / 0-10V (selectable) |
| Digital Output | RS485 Modbus RTU: T/RH/Dew Point/PPM simultaneous output |
| Resolution | Temperature: 0.01°C / 0.1°C, Humidity: 0.01%RH / 0.1% RH |
| Baud Rate | 1200~115200 (default 9600bps) |
| Working Environment | -20°C ~ +60°C; 0% ~ 95% RH (non-condensing) |
| Pressure Tolerance | Can withstand 16 bar pressure |
| Probe Structure | Detachable/Pipeline (0A#/3A#/5A#/6A# etc.) |
| Housing Material | Industrial-grade waterproof and corrosion-resistant alloy + sintered metal filter cap |
| Local Display (Optional) | Real-time display of temperature/humidity/dew point |
Core Advantages Summary
✅ Industry-leading high humidity stability: Stable operation with no drift at 95-98% RH;
✅ Intelligent dew point output, active condensation prevention: Ideal for pharmaceuticals, spraying, and cleanroom environments;
✅ RS485 + Analog multi-signal output: Easy integration with industrial systems;
✅ Flexible probe structure and installation: Supports detachable and pipeline types, with optional local display;
✅ Ultra-low power consumption + high anti-interference: Suitable for 24/7 long-life deployment;
✅ Professional brand assurance: Nexisense sensors are widely trusted in the industrial automation sector, offering high quality and customer satisfaction.
