Item Number: HG808-A Dew Point Transmitter
HG808 Super High Temperature Dew Point Transmitter
The HG808 is an industrial-grade temperature, humidity, and dew point transmitter designed for harsh environments with high temperatures even over 190℃. In addition to measuring and transmitting temperature and humidity, the HG808 calculates and transmits the dew point, which is the temperature at which air becomes saturated with water vapor and condensation begins to form.
Here’s a breakdown of the key features:
▪Integrated design, simple and elegant
▪Industrial grade ESD safety protection and power supply anti reverse connection design
▪Using waterproof, dustproof, and high-temperature resistant probes
▪Sensitive waterproof and anti fine dust high-temperature probe
▪Standard RS485 Modbus RTU communication protocol
The ability to measure dew point makes the HG808 ideal for applications where moisture control is critical, such as:
By measuring and transmitting all three values (temperature, humidity, and dew point), the HG808 provides a comprehensive picture of moisture conditions in harsh environments.
Here’s a specification details for the HG808-A series Dew Point Transmitter :
| Category | Specification |
|---|---|
| Temperature Range | -50 ~ +180°C |
| Humidity Range | 0 ~ 100% RH (Recommend < 95% RH) |
| Temperature Accuracy | ±0.1°C (@ 20°C) |
| Dew Point Accuracy | ±3% RH (± 5.4 °F) Td |
| 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 0 –Split type ：0A# / 0B# Probe 8 –Split type ：8A# / 8B# |
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.
0A#
1A#
3A#
5A#
6A#
8A#
0B#
1B#
3B#
5B#
6B#
8B#
M20 Hexagonal thread stainless steel probe connector
G1/2 Hexagonal thread stainless steel probe connector
NTP1/2 Hexagonal thread stainless steel probe connector
M27 Hexagonal thread stainless steel probe connector
M20 Flange stainless steel probe connector
| Line Color | Definition | Specification |
|---|---|---|
| Power Cord | ||
| Red | Power supply positive | 10 ~ 30V DC |
| Black | Power supply negative | GND |
| Analog Output Lines | ||
| Brown | Temperature signal positive | 4-20mA output |
| Blue | Temperature signal negative | Connects to Black (GND) |
| Grey | Humidity signal positive | 4-20mA output |
| White | Humidity signal negative | Connects to Black (GND) |
| RS485 Wiring | ||
| Yellow | RS485A | Twisted pair cable |
| Green | RS485B | Twisted pair cable |
Additional Notes:
Important:
Industrial processes often involve extreme temperatures and humidity levels. Regular transmitters can’t handle these harsh conditions. Here’s a breakdown of applications where high-temperature and humidity transmitters (operating over 200°C and down to -50°C) are crucial:
These are just a few examples. High-temperature and humidity transmitters play a vital role in various industries by ensuring process control, product quality, and safety in extreme environments.
The HG808 A series ultra-high temperature online dew point meter is designed for humidity measurement in high-temperature and dry environments,
equipped with a sturdy cast aluminum housing and stainless steel sensor components, suitable for continuous and accurate monitoring of temperature
and dew point in extremely harsh high-temperature industrial environments.
The A series ultra-high temperature online dew point meter is equipped with a dew point sensor that can withstand ultra-high temperatures, and also has
online real-time monitoring function.
This product has a wide range of applications, covering multiple fields such as food, medicine, chemical industry, high-temperature drying, and
environmental monitoring.
The HG808-A series is engineered for precise humidity measurement in high-temperature, dry environments.
Key features include:
| Category | Details |
|---|---|
| Product Name | HG808-A Series Ultra-High Temperature Online Dew Point Meter |
| Product Function | Accurate online monitoring of temperature and dew point in high-temperature, dry industrial settings. |
| Construction | – Cast aluminum housing- Stainless steel sensor components |
| Real-Time Monitoring | – Online monitoring capabilities- Dew point sensor for ultra-high temperatures |
| Applications | – Food Industry: Ensures product quality in drying ovens (vegetables, fruits, etc.) – Pharmaceutical Industry: Prevents moisture contamination during drying and disinfection – Chemical Industry: Enhances chemical reactions by monitoring dew point to avoid moisture interference – High-Temperature Drying: Improves efficiency and optimizes energy by accurately monitoring gas dew points – Environmental Monitoring: Measures combustion flue gas and chimney emissions to comply with environmental standards |
| Corrosion Resistance | Resistant to chemical gases, oil vapor, dust, micro particles; suitable for ultra-high temperature conditions (<190 °C) and corrosive environments |
| Interconnectivity | Modbus RTU protocol; integrates easily with PLC, DCS, and various configuration software |
| Versatile Use | Suitable as accessory in: – High heat process engineering systems- Industrial high-temperature drying systems – High-temperature constant temperature and humidity experimental chambers |
| Customer Support | Alternative products available upon inquiry for specialized measurement needs |
For measurement needs not met by the HG808-A series,
please contact our customer service for alternative temperature and humidity measurement products.
Thank you for your interest!
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