HG808-T High-Temperature Humidity Transmitter for Industrial Drying Ovens
HG808-T High-Temperature Humidity Transmitter for Industrial Drying Ovens In many manufacturing processes, drying is more than just a step — it’s a decisive factor that






Measure Dew Point Accurately up to +90 °C
— Even in Harsh Industrial Environments
The HG808-D is a compact, high-performance transmitter for dew point, temperature, and humidity monitoring in high-temperature and demanding processes such as drying systems, ovens, and compressed air lines.
-Built with a durable high-temperature probe and IP65 housing, it ensures stable, accurate measurement even in hot, dusty, or humid conditions.
Key Features:
*Wide Measurement Range: Dew point −60 °C ~ +90 °C; Temperature −40 °C ~ +90 °C (−76 °F ~ +194 °F)
*Flexible Outputs: RS-485 (Modbus-RTU), 4-20 mA, 0-5 V / 0-10 V
*Integrated Display: Real-time view of dew point, temperature, and humidity
*Industrial Compatibility: Connects easily to PLC, DCS, or on-site display systems
Ideal for:
*Compressed air monitoring
*Industrial drying
*Environmental chambers
*Process control
📩 Contact us to customize your HG808-D solution today.
Here’s a specification details for the HG808-D series Dew Point Transmitter :
| Dew point range: | -60°C to +90°C |
|---|---|
| Faixa de temperatura | -40 ~ +90°C |
| Faixa de umidade | 0 ~ 100% RH (recomendável < 95% RH) |
| Precisão de temperatura | ±0,1°C (@ 20°C) |
| Precisão do ponto de orvalho | ±2% RH (± 3.6 °F) Td |
| Fonte de alimentação | DC 10V ~ 28V |
| Consumo de energia | < 0.5W |
| Saídas analógicas | Umidade + temperatura: 4~20mA / 0-5V / 0-10V (um de três) |
| Saída digital RS485 | Temperatura, umidade, ponto de orvalho, PPM (lidos simultaneamente) |
| Taxa de resolução | 0,01°C / 0,1°C (opcional) 0,01% RH / 0,1% RH (opcional) |
| Taxa de transmissão | 1200, 2400, 4800, 9600, 19200, 115200 (padrão: 9600 bps) |
| Frequência de aquisição | Resposta mais rápida: 1 segundo; outras configurações por PLC |
| Formato de byte | 8 bits de dados, 1 bit de parada, sem verificação |
| Pressurização | 16 barras |
| Temperatura de trabalho | -20°C ~ +60°C, 0% RH ~ 95% RH (sem condensação) |
| Tipo de sonda | Tipo de divisão: Sonda 0 -Tipo de divisão :0A# / 0B# Sonda 8 -Tipo de divisão :8A# / 8B# |
Recommended Operating Conditions:
*Temperature: -40 … +90℃
*Dew Point: -60 … +90℃
*Application Environment:
Suitable for stable airflow, wind speed, and pressure conditions, and free from corrosive media, oil, or
Low-humidity or extremely dry environments with a wide dew point range.
chemical vapors.
The HG808-D Series offers four probe types, each with A and B variants, allowing you to choose the ideal configuration for any humidity measurement environment.
0A#
8A#
0B#
8B#
M20 Hexagonal thread stainless steel Threaded Connection
G1/2 Hexagonal thread stainless steel Threaded Connection
NTP1/2 Hexagonal thread stainless steel probe Threaded Connection
M27 Hexagonal thread stainless steel Threaded Connection
M20 Flange stainless steel probe Threaded Connection
| Cor da linha | Definição | Especificação |
|---|---|---|
| Cabo de alimentação | ||
| Vermelho | Fonte de alimentação positiva | 10 ~ 30V CC |
| Preto | Negativo da fonte de alimentação | GND |
| Linhas de saída analógica | ||
| Marrom | Sinal de temperatura positivo | Saída de 4-20mA |
| Azul | Sinal de temperatura negativo | Conecta-se ao preto (GND) |
| Cinza | Sinal de umidade positivo | Saída de 4-20mA |
| Branco | Sinal de umidade negativo | Conecta-se ao preto (GND) |
| Fiação RS485 | ||
| Amarelo | RS485A | Cabo de par trançado |
| Verde | RS485B | Cabo de par trançado |
Observações adicionais:
Importante:
Os processos industriais geralmente envolvem temperaturas e níveis de umidade extremos. Os transmissores comuns não conseguem lidar com essas condições adversas. Veja a seguir um detalhamento das aplicações em que os transmissores de alta temperatura e umidade (operando acima de 200 °C e até -50 °C) são cruciais:
Here is a structured table for the applications of high-temperature and low-temperature transmitters in extreme environments:
| Aplicativo | Descrição |
|---|---|
| High-Temperature Applications (Over 200°C) | Industrial Ovens and Furnaces: Monitoring temperature and humidity is vital in curing processes like painting, drying ceramics, and heat treating metals. Precise control ensures product quality and prevents defects. |
| Power Generation: Humidity measurement in power plants helps prevent corrosion in turbines and other equipment exposed to high temperatures and steam. | |
| Processamento químico: Accurate temperature and humidity data is essential for safe and efficient chemical reactions in reactors, dryers, and pipelines. Deviations can lead to hazardous situations or product contamination. | |
| Fabricação de semicondutores: Creating microchips involves tightly controlled environments with high temperatures and low humidity. Transmitters ensure proper conditions for sensitive processes like photolithography and etching. | |
| Glass Manufacturing: Glass production requires precise temperature and humidity control during melting, blowing, and annealing. Transmitters help maintain consistent glass quality and prevent defects. | |
| Low-Temperature Applications (Down to -50°C) | Cold Storage Facilities: Monitoring temperature and humidity in freezers and cold warehouses helps maintain optimal conditions for food preservation and prevent spoilage. |
| Cryogenic Applications: Extremely low temperatures are used in research and industrial processes like superconductivity and liquefied natural gas (LNG) storage. Transmitters ensure safe handling and prevent equipment damage from ice formation. | |
| Climate Monitoring: These transmitters are valuable tools for weather stations in extreme cold environments like the Arctic or high mountain regions. They provide accurate data for climate research and weather forecasting. | |
| Aerospace Industry: Testing aircraft components for functionality in frigid conditions requires precise temperature and humidity control. Transmitters simulate real-world scenarios and ensure aircraft safety. | |
| Wind Turbine Icing: Detecting and measuring ice formation on wind turbine blades is crucial for safe operation. Transmitters help prevent blade damage and power generation loss in cold climates. |
Would you like any adjustments or additional details?
Esses são apenas alguns exemplos. Os transmissores de alta temperatura e umidade desempenham um papel vital em vários setores, garantindo o controle do processo, a qualidade do produto e a segurança em ambientes extremos.
2. Marque Todos os outros Baixar arquivos
The HG808-D series is a robust dew point transmitter designed for measuring low dew point data in extremely low humidity conditions.
Os principais recursos incluem:
Here is a table summarizing the key features:
| Recurso | Descrição |
|---|---|
| Reliable Measurement | Ideal for air compression, refrigeration, membrane, and adsorption dryers. |
| Versatile Installation | Can be installed in industrial applications, including: – Pipeline drying with vacuum and dry gas purification – Thermal regeneration compressed gas – Adsorption drying |
| Comprehensive Gas Monitoring | Provides accurate online measurements of moisture in various gases, including flammable, inert, and corrosive types. Useful for detecting residual humidity behind plastic industry dryers. |
| Strict Humidity Control | Essential for low dew point measurement in: – Lithium battery production – Electronic component manufacturing – Semiconductor processes – Power engineering |
| Wide Application Scope | Commonly used for humidity detection in: – Air separation nitrogen production – Dry gases, compressed gases, natural gas, and liquefied gases – High-temperature sintering furnace protective gases – Electronics industry, insulation gases, and refrigerants – Rapid trace moisture analysis in food, pharmaceuticals, and machinery |
| Broader Use Cases | Suitable for: – Meteorological analysis – Power switches – Metal smelting – Petrochemical processes – Natural gas processing – Electronic manufacturing – Textiles – Aerospace where dew point measurement is critical |
For any measurement needs not met by the HG808-D series, please reach out to our customer service for alternative temperature and humidity measurement products.
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