Industrial High Wet Humidity < 98% RH Temperature Humidity Sensor 4-20mA, RS485, 0-5V, 0-10V Output, Long Lifespan and Stable & Accurate Measurement high humidity condition

商品番号  HG808-H Series

Breakthrough Sensor Technology

— Reliable in 95–98% RH, Stable & Accurate Measurement

The HG808 is a next-generation industrial humidity transmitter engineered for ultra-high humidity environments

With advanced sensor protection and durable probe construction, it ensures long-term operation in 95–98% RH without failure or drift. Ideal for food drying, pharmaceutical manufacturing, kilns, and harsh processing conditions, the HG808 delivers high-precision, stable measurements even in saturated, steamy environments.

仕様

🌟 Product Highlights:

-Exceptional Stability in High Moisture
Long-term operation in near-saturation humidity without degradation or drift.

✅-Precision Sensor Technology
High accuracy ±2% RH, ±0.2°C ensures reliable data for critical control systems.

✅-Robust Construction
Withstands harsh process environments, reducing downtime and maintenance.

✅-Safety & Compatibility
Built-in ESD protection, reverse polarity protection, and standard Modbus protocol ensure safe, seamless deployment.

HG808-H High Humidity Temperature Humidity Transmitter

🔧 Key Features

High-Humidity Durability (95–98% RH)
New-generation design resists damage from long-term exposure to moisture-saturated environments.

Precision & Stability
Maintains accurate readings even under rapid temperature and humidity fluctuations.

Wide Measurement Range

Temperature: -40°C to 190°C

Humidity: 0–98% RH

Real-Time Dew Point Calculation
Built-in algorithm to monitor and manage condensation risks.

Multi-Signal Output
Supports RS485 Modbus RTU, 4–20mA, and optional 0–5V / 0–10V for easy integration.

Durable Industrial Probe
Waterproof, anti-corrosion sensor housing with sintered metal filter for dust and vapor resistance.

Optional Local Display
On-screen T/RH/Dew Point readouts available for real-time monitoring.

Industrial System Compatibility

Easily connects with:

*On-site digital meters

*PLCs (Programmable Logic Controllers)

*Frequency converters

*Industrial host control systems

HG808-H Data Sheet Details

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

カテゴリー仕様
温度範囲-40 ~ +100°C (or -40°F to 212°F)
湿度範囲0 ~ 100% RH (Recommend < 98% RH)
Temperature Accuracy±0.1°C (@ 20°C)
Humidity Accuracy±2% RH (@ 20°C, 10 ~ 90% RH)
Power SupplyDC 10V ~ 28V
Power Consumption< 0.5W
Analog OutputsHumidity + Temperature:
4~20mA / 0-5V / 0-10V (one out of three)
RS485 Digital OutputTemperature, humidity, dew point, PPM (read simultaneously)
Resolution Ratio0.01°C / 0.1°C (optional) 
0.01% RH / 0.1% RH (optional) 
Baud Rate1200, 2400, 4800, 9600, 19200, 115200 (default: 9600 bps)
Acquisition FrequencyFastest response: 1 second; other settings per PLC
Byte Format8データビット、1ストップビット、ノーチェック
Pressurization16バー
Working Temperature-20°C ~ +60°C, 0% RH ~ 95% RH (Non-condensation)
Probe Type

Split type:
Probe 0 –Split type  :0A# / 0B#
Probe 3 – Pipeline :3A# / 3B#

Probe 5 – Pipeline :5A# / 5B#
Probe 6 – Split type :6A# / 6B#

HG808 #3 Probe Items List

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.

A-Series Humidity Probe

A type Porous stainless steel humidity probe

0A#

#A1 Humidity Probe For Humidity Transmitter

1A#

#A3 Humidity Probe For Humidity Transmitter

3A#

#A5 Humidity Probe For Humidity Transmitter

5A#

#A6 Humidity Probe For Humidity Transmitter

6A#

#A8 Humidity Probe For Humidity Transmitter

8A#

B-Series Humidity Probe

B type stainless steel humidity probe

0B#

#B1 Humidity Probe For Humidity Transmitter

1B#

3B#

5B#

6B#

8B#

Probe Connector

Probe Connector Option
M20 Hexagonal thread stainless steel humidity probe

M20 Hexagonal thread stainless steel probe connector

G1/2 Hexagonal thread stainless steel humidity probe

G1/2 Hexagonal thread stainless steel probe connector

NTP1/2 Hexagonal thread stainless steel humidity probe

NTP1/2 Hexagonal thread stainless steel probe connector

M27 Hexagonal thread stainless steel humidity probe

M27 Hexagonal thread stainless steel probe connector

M20 Flange stainless steel humidity probe

M20 Flange stainless steel probe connector

インスタレーションについて

4-20mA Temperature Humidity Transmitter Wire Connect Diagram

4-20mA Temperature Humidity Transmitter Wire Connect Diagram

0-10v Temperature Humidity Transmitter Wire Connect Diagram

0-10v Temperature Humidity Transmitter Wire Connect Diagram

0-5v Temperature Humidity Transmitter Wire Connect Diagram

0-5v Temperature Humidity Transmitter Wire Connect Diagram

Each color wire connect diagram HG808 Humidity Transmitter

4-20mA+RS485アナログ出力タイプの配線規格

ラインカラー定義仕様
電源コード  
レッド電源プラス10 ~ 30V DC
ブラック電源マイナスGND
アナログ出力ライン  
ブラウン温度信号正4-20mA出力
ブルー温度信号負黒(GND)に接続
グレー湿度信号 正4-20mA出力
ホワイト湿度信号負黒(GND)に接続
RS485配線  
イエローRS485Aツイストペアケーブル
グリーンRS485Bツイストペアケーブル

その他の注意事項

  • 耐荷重:
    • 現在の出力: ≤ 600Ω
    • 電圧出力(この表では該当なし):≦250Ω
 
  • 適用モデル: All HG808 Series
 

重要だ:

  • 具体的な接続方法と追加要件については、デバイスのマニュアルを参照してください。
  • RS485バスの終端抵抗が、デバイスのマニュアルや関連する通信規格に従って適切に使用されていることを確認してください。
  • 適切な知識と資格なしに電気配線を試みないでください。
  •  

アプリケーション

High Temperature and Humidity Transmitters: 

Applications for Extreme Environments

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 100°C and down to -40°C) are crucial:

High-Temperature Applications (Over 100°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.
  • Chemical Processing: 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.
  • Semiconductor Manufacturing: 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 -40°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.
 

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.

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Product Introduction

The HG808-H series temperature and humidity transmitter features a high-precision, durable humidity sensor with ±1.5% RH accuracy, making it ideal for harsh industrial environments with temperatures ranging from -50°C to +150°C. This series ensures effective dust-free and clean measurement, making it perfect for clean room applications.

Common uses include electronic and pharmaceutical clean rooms, hospital operating rooms, and various industrial settings such as chemical and paint workshops, agricultural engineering, and HVAC systems. The HG808-H series is also suitable for climate chambers, meteorological stations, museums, and more, where strict temperature and humidity control is essential.

For any specific measurement needs not addressed by the HG808-H series, please contact our customer service for alternative options. Thank you for considering our products!

Function Features 

Split/pipeline type probes with strong anti pollution and oil resistance capabilities.

 Simultaneously supporting RS485 output and two analog outputs.

 Analog output with 15 high-resolution bits, digital output with optional resolution of 0.1 or 0.01.

 Supports single register and multi register reading.

 The product has anti condensation function, which can keep the sensor synchronized in high humidity

environments.

 Digital output can simultaneously read dew point, humidity, temperature, and PPM values.

 Adopting the standard Modbus RTU protocol, it can easily achieve interconnection with PLC, DCS, and

various configuration software.

 10V~28V ultra wide voltage input, over current protection, power polarity protection, industrial grade ESD

safety protection, and power supply anti reverse connection function.

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