Corrosion-Resistant Dew Point Transmitter - HG808-G 

HG808-G Corrosion-Resistant Dew Point Transmitter
HG808-G Corrosion-Resistant Dew Point Transmitter Display Option
Corrosion-Resistant Dew Point Transmitter HG808-G HENGKO
Opțiunea de ieșire a emițătorului de temperatură-umezeală HG808
Humidity Sensor and Transmitter Prob
Opțiunea tipului de sondă a transmițătorului de temperatură și umiditate HG808

HG808-G Corrosion-Resistant Dew Point Transmitter

Accurate Dew Point Monitoring for Corrosive and Chemically Aggressive Environments

The HG808-G is an industrial-grade transmitter for dew point, temperature, and humidity measurement in harsh chemical and solvent environments.
Made from 316L stainless steel with a nano-coated anti-corrosion finish, it ensures long-term accuracy and stability in the presence of acids, alkalis, and salt mist.

Key Features:
*Corrosion-Resistant Build: 316L stainless steel probe with protective coating
*Wide Measuring Range: Dew point −60 °C ~ +20 °C (−76 °F ~ +68 °F)
*High Accuracy: ±3 °C Td dew point, ±0.2 °C temperature
*Flexible Outputs: RS-485 (Modbus-RTU), 4–20 mA, 0–5 V / 0–10 V
*Industrial Protection: IP65 housing, 16 bar pressure resistance
*Fast Response < 1 s: Ideal for real-time process monitoring
*Easy Integration: Connects directly to PLC, DCS, or SCADA systems

Perfect for: 
Chemical | Pharmaceutical | New-Energy | Solvent Recovery Processes

📩 Contact us to configure your corrosion-resistant dew point solution today.

HG808-G ( Data Sheet )
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SPECIFICAȚII

Puncte forte ale produsului:

  • Constructed from 316L stainless steel with protective coating for superior corrosion resistance
  • Measures dew point, temperature, humidity, and PPM simultaneously for comprehensive analysis
  • Wide measuring range:
    Dew point −60 … +20 °C (−76 … +68 °F)
    Temperature −20 … +60 °C (−4 … +140 °F)
  • Precizie ridicată: ±3 °C Td (dew point); ±0.2 °C (temperature @23 °C)
  • Excellent stability: <1 % RH/year humidity drift; ≤0.1 °C/year temperature drift
  • Flexible outputs: RS-485 (Modbus-RTU), 4–20 mA, 0–5 V, 0–10 V
  • Fast response time: <1 s; PLC-adjustable acquisition frequency
  • Pressure-resistant design: Operates up to 16 bar with IP65-rated enclosure
  • Non-condensing operation: 0–95 % RH for long-term reliability
  • Easy integration: Compatible with PLC, DCS, and SCADA systems for continuous process monitoring

HG808-G Data Sheet Details

Here’s a specification details for the HG808-G series Humidity Transmitter :

CategorieSpecificații
Measurement ParametersDew Point, Temperature, Humidity, PPM (for reference)
Intervalul punctului de rouă–60 °C ~ +20 °C
Dew Point Accuracy±3 °C Td (±5.4 °F)
Intervalul de temperatură–20 °C ~ +60 °C
Precizia temperaturii±0.2 °C (@ 23 °C)
Temperature Long-Term Stability≤ 0.1 °C / year
Humidity Long-Term Stability≤ 1 % RH / year
Digital OutputRS485 (Modbus-RTU); outputs temperature, humidity, dew point, PPM (humidity & PPM for reference only)
Ieșiri analogiceTemperature + Dew Point – select one: 4-20 mA / 0-5 V / 0-10 V
Pressure Resistance≤ 16 bar
Baud Rate1200, 2400, 4800, 9600, 19200, 115200 bps (selectable; default 9600 bps)
Frecvența de achizițieFastest response 1 second; adjustable via PLC
Working Environment–20 °C ~ +60 °C; 0 % ~ 95 % RH (non-condensing)
Sursă de alimentareDC 12 V ~ 24 V, reverse-polarity protected
Consumul de energie< 0.5 W
Output ProtocolStandard Modbus-RTU; compatible with PLC, DCS, and SCADA systems
ConstructionCompact aluminum housing with industrial grade ESD & anti-reverse protection
Installation & CustomizationCustom probe design available according to application needs (structure, shape, length, material, mounting method)
Protection RatingIP65 – dustproof and moisture-resistant
Applicable Probe Options

Two probe types available:

• Gas Sampling Unit

• 316L Stainless Steel Sintered Protective Housing

(A-Type, 0A# / 8A#)

HG808 #3 Probe Lista articolelor

Oferim 6 tipuri de sonde pentru transmițătorul de umiditate HG808, fiecare tip fiind disponibil în versiunile A și B, oferind un total de 12 sonde pentru diferite opțiuni de aplicare.

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#

Conector sondă

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

Conector pentru sondă din oțel inoxidabil cu filet hexagonal M20

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

Conector pentru sondă din oțel inoxidabil cu filet hexagonal G1/2

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

NTP1/2 Conector pentru sondă din oțel inoxidabil cu filet hexagonal

M27 Sondă de umiditate din oțel inoxidabil cu filet hexagonal

Conector pentru sondă din oțel inoxidabil cu filet hexagonal M27

Sondă de umiditate din oțel inoxidabil cu flanșă M20

Conector pentru sondă din oțel inoxidabil cu flanșă M20

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

Typical Applications – HG808-G Corrosion-Resistant Dew Point Transmitter

1. Lithium Battery Electrolyte Filling / Electrode Coating

Precise dew point and humidity monitoring is critical to prevent moisture contamination of electrolyte solutions și ensure uniform electrode coating quality.

  • Typical conditions: Dew point ≤ –40 °C, temperature 20 – 30 °C, humidity < 1 % RH.

  • Control requirement: Continuous online dew point monitoring in glove boxes and drying chambers for ultra-low humidity environments.

2. Chemical Reactors & Solvent Recovery Pipelines

During chemical synthesis or solvent recovery, excessive moisture can affect reaction yield, purity, and safety. The HG808-G provides stable measurements even in acidic, solvent, or oil-vapor atmospheres.

  • Typical conditions: Dew point –40 ~ 0 °C, temperature 25 – 60 °C, humidity 5 – 40 % RH.

  • Control requirement: Corrosion-resistant dew point monitoring under HF, HCl, NH₃, or VOC exposure to prevent condensation and corrosion.

3. Pharmaceutical Raw Material Drying

Humidity and temperature stability are essential to maintain API potency and drying uniformity. The HG808-G ensures accurate dew point and temperature control in cleanrooms and drying ovens.

  • Typical conditions: Dew point –30 ~ +10 °C, temperature 40 – 80 °C, humidity 2 – 20 % RH.

  • Control requirement: Real-time humidity feedback to optimize drying cycles and ensure GMP-compliant environmental monitoring.

4. Flue Gas Desulfurization (FGD) Towers

FGD processes involve high-temperature, corrosive gases with varying moisture content. The HG808-G’s 316L stainless-steel probe withstands SO₂/SO₃ and acid mist for long-term reliability.

  • Typical conditions: Temperature 60 – 120 °C, humidity 10 – 80 % RH, dew point 0 ~ 50 °C.

  • Control requirement: Dew point monitoring for condensation control and corrosion prevention in gas treatment systems.

5. Industrial Exhaust Gas & Emission Treatment

Stable dew point monitoring is required to prevent pipeline condensation, corrosion, and particulate accumulation in emission control systems.

  • Typical conditions: Temperature 30 – 90 °C, dew point –20 ~ 40 °C, humidity 5 – 70 % RH.

  • Control requirement: Continuous dew point trend tracking to maintain safe moisture levels before gas filtration or catalytic processing.

Descărcați manualul produsului / certificare / software

1.Tem & Humidity Transmitter  E-Catalogue

2. Bifați toate celelalte Descărcare fișiere

Întrebări frecvente

1. What makes the HG808-G suitable for corrosive industrial environments?

The HG808-G is engineered with an integrated corrosion-resistant structure, using 316L stainless steel and a sealed cast-aluminum housing (IP65). It resists acids, alkalis, electrolyte vapors, and chemical solvents, making it ideal for lithium battery, chemical, and pharmaceutical applications where standard sensors fail.

2. How durable is the HG808-G under harsh operating conditions?

This transmitter has undergone strict testing for oil-gas mixtures, chemical corrosion, and dust impact. Its IP65-rated aluminum enclosure și pressure-resistant 316L probe can withstand up to 16 bar, ensuring long-term stability and reliability even in challenging process environments.

3. What output and communication options does the HG808-G support?

The HG808-G offers flexible signal outputs for easy system integration:

  • Digital: RS485 (Modbus-RTU) for dew point, temperature, humidity, and PPM values.

  • Analog: Dual-channel outputs of 4-20 mA, 0-5 V, or 0-10 V (user selectable).
    This design allows seamless connectivity with PLC, DCS, or SCADA systems for automated dew point and temperature control.

4. Can the HG808-G record and analyze measurement data?

Yes. The transmitter includes data-recording functionality and supports connection to backend analysis software. Users can generate reports and trend charts with one click, enabling efficient monitoring, traceability, and process optimization.

5. What parameters can the HG808-G measure simultaneously?

The HG808-G can output dew point temperature, process temperature, relative humidity, and PPM values at the same time—providing a complete picture of gas dryness and system conditions.

6. How does the HG808-G compare to imported dew point transmitters?

By integrating advanced sensor technology and optimized circuitry, the HG808-G matches the performance of imported brands at a significantly lower cost. It delivers high precision, strong corrosion resistance, and excellent long-term stability, helping customers reduce maintenance and procurement costs.

7. Is customization available for different installation conditions?

Yes. HENGKO offers customized probe designs (structure, length, material, and mounting method) to meet specific process requirements—ensuring accurate and stable dew point measurement under any industrial condition.

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