High Temperature Dew Point Transmitter - HG808-D 

HG808-D High Temperature Dew Point Transmitter

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.

SPECIFICAȚII

Puncte forte ale produsului:

  • Designed for high-temperature and harsh industrial environments — ideal for drying, compressed air, and heat-treatment processes
  • Măsuri dew point, temperature, and humidity simultaneously for complete moisture analysis
  • High-temperature probe ensures accurate and stable readings up to +90 °C (194 °F)
  • Wide dew point range: −60 … +90 °C (−76 … +194 °F) for both ultra-dry and humid conditions
  • Flexible signal outputs: RS-485 (Modbus-RTU), 4–20 mA, 0–5 V, or 0–10 V — ready for PLC, DCS, or SCADA integration
  • IP65 aluminum housing with dust- and moisture-resistant construction for long-term reliability
  • Built-in display provides real-time visualization of dew point, temperature, and humidity
  • Compatible with industrial controllers and data loggers for continuous process monitoring

HG808-D Data Sheet Details

Here’s a specification details for the HG808-D series Dew Point Transmitter :

Dew point range:-60°C to +90°C
Intervalul de temperatură-40 ~ +90°C
Intervalul de umiditate0 ~ 100% RH (recomandat < 95% RH)
Precizia temperaturii±0,1°C (LA 20°C)
Dew Point Accuracy±2% RH (± 3.6 °F) Td
Sursă de alimentareDC 10V ~ 28V
Consumul de energie< 0.5W
Ieșiri analogiceUmiditate + temperatură:
4~20mA / 0-5V / 0-10V (unul din trei)
Ieșire digitală RS485Temperatura, umiditatea, punctul de rouă, PPM (citite simultan)
Raportul de rezoluție0,01°C / 0,1°C (opțional) 
0,01% RH / 0,1% RH (opțional) 
Baud Rate1200, 2400, 4800, 9600, 19200, 115200 (implicit: 9600 bps)
Frecvența de achizițieCel mai rapid răspuns: 1 secundă; alte setări pe PLC
Format byte8 biți de date, 1 bit de oprire, fără verificare
Presurizare16 bar
Temperatura de lucru-20°C ~ +60°C, 0% RH ~ 95% RH (necondensare)
Tip sondă

Tip split:

Sondă 0 -Tip split :0A# / 0B#

Probe 8 –Split type  :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.

HG808-D series Humidity Probe List Option

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.

Sonda de umiditate seria A

Sonda de umiditate din oțel inoxidabil poros de tip A

0A#

#A8 Sondă de umiditate pentru transmițător de umiditate

8A#

Sonda de umiditate seria B

Sondă de umiditate din oțel inoxidabil de tip B

0B#

8B#

Threaded Connection

Opțiune conector sondă
Sondă de umiditate din oțel inoxidabil cu filet hexagonal M20

M20 Hexagonal thread stainless steel Threaded Connection

Sonda de umiditate din oțel inoxidabil cu filet hexagonal G1/2

G1/2 Hexagonal thread stainless steel Threaded Connection

NTP1/2 Sondă de umiditate din oțel inoxidabil cu filet hexagonal

NTP1/2 Hexagonal thread stainless steel probe Threaded Connection

M27 Sondă de umiditate din oțel inoxidabil cu filet hexagonal

M27 Hexagonal thread stainless steel Threaded Connection

Sondă de umiditate din oțel inoxidabil cu flanșă M20

M20 Flange stainless steel probe Threaded Connection

Despre instalare

Transmițător de temperatură și umiditate 4-20mA Diagramă de conectare a sârmei

Transmițător de temperatură și umiditate 4-20mA Diagramă de conectare a sârmei

0-10v Temperatură Umiditate Transmițător Sârmă Conectați Diagrama

0-10v Temperatură Umiditate Transmițător Sârmă Conectați Diagrama

0-5v Temperatură Umiditate Transmițător Sârmă Conectați Diagrama

0-5v Temperatură Umiditate Transmițător Sârmă Conectați Diagrama

Diagrama de conectare a firelor de fiecare culoare Transmițător de umiditate HG808

Cablare standard a tipului de ieșire analogică 4-20mA + RS485

Culoarea linieiDefinițieSpecificații
Cablu de alimentare  
RoșuSursă de alimentare pozitivă10 ~ 30V DC
NegruSursă de alimentare negativăGND
Linii de ieșire analogice  
MaroSemnal de temperatură pozitivieșire 4-20mA
AlbastruSemnal de temperatură negativSe conectează la negru (GND)
GriSemnal de umiditate pozitivieșire 4-20mA
AlbSemnal de umiditate negativSe conectează la negru (GND)
Cablare RS485  
GalbenRS485ACablu cu perechi răsucite
VerdeRS485BCablu cu perechi răsucite

Note suplimentare:

  • Capacitate de încărcare:
    • Curent de ieșire: ≤ 600Ω
    • Tensiunea de ieșire (nu se aplică în acest tabel): ≤ 250Ω
 
  • Modele aplicabile: Toate seriile HG808
 

Important:

  • Consultați manualul dispozitivului pentru instrucțiuni specifice de conectare și orice cerințe suplimentare.
  • Asigurați-vă că pe magistrala RS485 sunt utilizate rezistențe de terminare adecvate, conform manualului dispozitivului și standardelor de comunicare relevante.
  • Nu încercați să instalați cabluri electrice fără cunoștințe și calificări adecvate.
  •  

SOLICITARE

Transmițătoare de temperatură și umiditate ridicată: 

Aplicații pentru medii extreme

Procesele industriale implică adesea temperaturi și niveluri de umiditate extreme. Transmițătoarele obișnuite nu pot face față acestor condiții dificile. Iată o defalcare a aplicațiilor în care transmițătoarele pentru temperaturi și umidități ridicate (care funcționează la peste 200°C și până la -50°C) sunt esențiale:

Here is a structured table for the applications of high-temperature and low-temperature transmitters in extreme environments:

AplicațieDescriere
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.
 Prelucrarea chimică: 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.
 Fabricarea semiconductorilor: 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?

 

Acestea sunt doar câteva exemple. Transmițătoarele de temperatură ridicată și umiditate joacă un rol vital în diverse industrii, asigurând controlul proceselor, calitatea produselor și siguranța în medii extreme.

Descărcați manualul produsului / certificare / software

2. Bifați toate celelalte Descărcare fișiere

Prezentarea produsului

The HG808-D series is a robust dew point transmitter designed for measuring low dew point data in extremely low humidity conditions. 

Key features include: 

Here is a table summarizing the key features:

CaracteristicăDescriere
Reliable MeasurementIdeal for air compression, refrigeration, membrane, and adsorption dryers.
Versatile InstallationCan be installed in industrial applications, including:
– Pipeline drying with vacuum and dry gas purification
– Thermal regeneration compressed gas
– Adsorption drying
Comprehensive Gas MonitoringProvides 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 ControlEssential for low dew point measurement in:
– Lithium battery production
– Electronic component manufacturing
– Semiconductor processes
– Power engineering
Wide Application ScopeCommonly 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 CasesSuitable 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.

Thank you for your interest!

HG808-D Product Parameters HENGKO

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