Why Standard Sensors Fail in High-Temperature Humidity Measurement ？
Why Standard Humidity Sensors Fail in High-Temperature Environments Quick Summary Standard humidity sensors are mainly
Harsh Industrial Environments Temperature and Humidity Monitor Solution
HG808 Sereris
Your Best Industrial Temperature and HIgh Humidity Monitor Projects Solution Supplier
Industrial Harsh Environments Temperature and Humidity Sensor and Transmitter Solution
The HG808 Series by HENGKO offers a comprehensive line of industrial-grade transmitters designed to deliver accurate, stable, and long-term reliable measurements of temperature, humidity, and dew point across a wide range of challenging environments.
Whether facing extreme heat, high humidity, corrosive gases, or precision monitoring demands, HG808 has a solution built for your application.
🔧 Key Features Across the HG808 Series:
- Industrial-grade sensors with long-term accuracy and low maintenance
- Wide measurement ranges: up to 190°C, 0–100% RH, och ±1.5%RH precision
- Multiple output options: RS485/Modbus-RTU, 4-20 mA, 0–5V, 0–10V
- High IP-rated enclosures and stainless steel construction for durability
- Strong compatibility with PLCs, DCS, SCADA, and other systems
Not Sure How to Choose? Here's Selection Guide
| Modell | Application & Operating Conditions | Key Features & Advantages |
|---|---|---|
| 01 / Temperature & Humidity Transmitters | ||
| HG808-T | High-Temperature Monitoring Industrial kilns, drying ovens, flue gas and heat-processing equipment Designed for continuous operation in high-temperature environments. |
|
| HG808-H | Continuous High-Humidity Monitoring Cleanrooms, greenhouses, indoor pools and humid production environments Designed for long-term monitoring under consistently high humidity. |
|
| HG808-C | High-Precision Temperature & Humidity Measurement Laboratories, pharmaceutical facilities, food processing and controlled storage Ideal for applications requiring accurate environmental monitoring. |
|
| HG808-F | Corrosive & Chemical Environments Pharmaceutical production, battery manufacturing and chemical processing facilities Designed for environmental monitoring in chemically demanding conditions. |
|
| 02 / Dew Point Transmitters | ||
| HG808-D | Industrial Dew Point Monitoring Compressed air, dry gas pipelines, glove boxes and industrial gas systems Suitable for general industrial dew point measurement. |
|
| HG808-A | High-Temperature Dew Point Measurement Industrial drying chambers, petrochemical processes and high-temperature gas applications Designed for moisture monitoring in elevated-temperature processes. |
|
Note: Specifications are based on the supplied product information. Actual performance depends on operating conditions and sensor configuration. Please confirm technical requirements before selection. On mobile devices, swipe horizontally to view the complete comparison table.
HG808 Series Products
- Temperature & Humidity Transmitter Solution
HENGKO offers a broad array of industrial temperature and humidity sensors suitable for various monitoring needs, ranging from stainless steel sensor probes to dew point transmitters and as following 6 kinds of temperature and humidity monitor devices solution. Our focus is on providing accurate, reliable, and long-lasting sensors, making them perfect for a diverse array of applications. Here List our HG808 series, please check details as following.
✅ HG808-H
- Högvåt / Förhållande med hög luftfuktighet 98% Transmitter för RH-fuktighet
Konstruerad för kontinuerlig drift i miljöer med hög luftfuktighet, renrum och simbassänger. - Kontinuerlig miljö med hög luftfuktighet >85%RH, exakt och långvarig drift
✅ HG808-T
- High-Temperature Sändare för luftfuktighet
Ideal for high-heat environments such as kilns, ovens, and gas pipelines (up to 200°C). - Continuous high temperature environment > 180℃ Accurate and long-life operation
✅ HG808-C
- Hi-Precision ±1.5%RH Measurement Transmitter
Designed for applications requiring stable and precise data, such as pharma, labs, and electronics.
✅ HG808-F (New) - comming soon
Corrosion-Resistant Transmitter för temperatur och luftfuktighet
Withstands harsh chemical exposure—ideal for pharmaceutical cleanrooms, chemical processing, battery plants, och food-grade environments.Anti-acid, alkali, disinfectant, and reagent corrosion
Stainless steel housing, IP65 protection, and modular probe design
Accurate RH ±2.5%, Temp ±0.2°C @20°C
HG808 Series Products
- Dew Point Monitor Solution
HG808 also offers specialized dew point monitoring solutions tailored for challenging industrial environments — including high temperature, hög luftfuktighet, corrosive conditions, och chemical exposure.
Explore the models below to select the right humidity transmitter for your specific application needs.
✅ HG808-D
- Dew Point Transmitter (4–20mA)
Specialized for moisture control and dew point measurement in dry gas systems and glove boxes.
✅ HG808-A
- Ultra High-Temperature Daggpunktstransmitter (up to 180°C)
Built for ultra-high temperature industrial applications with strong anti-interference design.
Datasheet
| Modell | Temperaturområde | Humidity / Dew Point Range | Measurement Accuracy | Viktiga funktioner | Typical Applications |
|---|---|---|---|---|---|
| 01 / Temperature & Humidity Transmitters | |||||
| HG808-T High-Temperature Transmitter | -40 to +200°C | 0–100% RH |
Temperatur
±0.1°C (@85°C) Luftfuktighet ±2% RH (@23°C, 10–90% RH) |
|
Industrial furnaces, kilns, high-temperature ovens, coking gas pipelines and thermal processing equipment. |
| HG808-H High-Humidity Transmitter | -40 to +100°C | 0–100% RH |
Temperatur
±0.1°C (@23°C) Luftfuktighet ±2% RH (@23°C, 10–90% RH) |
|
High-humidity industrial environments, humid production facilities, greenhouses, indoor pools and moisture-intensive processes. |
| HG808-C High-Precision Transmitter | -40 to +150°C | 0–100% RH |
Temperatur
±0.1°C (@23°C) Luftfuktighet ±1.5% RH (@23°C, 10–90% RH) |
|
Biopharmaceutical production, precision manufacturing, laboratories, food processing and controlled storage. |
| HG808-F Corrosion-Resistant Transmitter NEW | -40 to +120°C | 0–100% RH |
Temperatur
±0.2°C (@23°C) Luftfuktighet ±2.5% RH (@23°C, 10–90% RH) |
|
Pharmaceutical cleanrooms, chemical processing, battery manufacturing and food-grade environments. |
| 02 / Dew Point Transmitters | |||||
| HG808-A High-Temperature Dew Point Transmitter | -80 to +180°C | Daggpunkt -20 to +100°C Td |
Daggpunkt
±3°C Td |
|
High-temperature drying systems, industrial gas processes, petrochemical equipment and moisture-sensitive applications. |
| HG808-D Industrial Dew Point Transmitter | -40 to +90°C | Daggpunkt -60 to +90°C Td |
Daggpunkt
±2°C Td |
|
Lithium battery manufacturing, semiconductor production, glove boxes, compressed air and dry gas monitoring. |
| HG808-G Corrosion-Resistant Dew Point Transmitter | -20 to +60°C | Daggpunkt -60 to +20°C Td |
Daggpunkt
±3°C Td |
|
Chemical gas processing, industrial dry gas systems, controlled-atmosphere production and low-moisture monitoring. |
Note: Temperature ranges, humidity ranges and dew point ranges refer to different measurement parameters. Accuracy values apply under the specified reference conditions. Actual performance may vary with installation and operating conditions. On mobile devices, swipe horizontally to view the complete table.
Humidity Probe Option
Vi erbjuder 6 typer av prober för HG808 Humidity Transmitter, där varje typ finns i både A- och B-versioner, vilket ger totalt 12 prober för olika applikationsalternativ.
A-serie fuktsond
0A#
1A#
3A#
5A#
6A#
8A#
B-serie fuktsond för luftfuktighet
0B#
1B#
3B#
5B#
6B#
8B#
Probe Installation
M20 Hexagonal gänga för sondanslutning i rostfritt stål
G1/2 Hexagonal gänga för sondanslutning i rostfritt stål
NTP1/2 Sondanslutning med sexkantig gänga i rostfritt stål
M27 Hexagonal gänga i rostfritt stål för probekontakt
M20 Fläns rostfritt stål probekontakt
Tillämpningar
HENGKO, as a leading factory and OEM provider, offers 6 types of humidity transmitters, sensors, and meters with various probe options. We specialize in delivering the best temperature and humidity monitoring solutions for diverse industrial applications, ensuring reliability and customization to meet specific needs.
Food Storage and Refrigeration
Preserving Freshness: Critical Monitoring for Perishable Goods
Let us tell you why you should choose a humidity transmitter from HENGKO
Varför välja USA
HENGKO är en professionell leverantör av industriella temperatur- och fuktgivarlösningar, med ett rykte om unik design och utmärkt prestanda.
Our temperature and humidity transmitters and sensors are utilized across various industries, such as food and beverage, pharmaceuticals, manufacturing, and environmental monitoring, delivering reliable and accurate measurements essential for operational success.
01
Lösning
You can easy find the best temperature and humidity solutions by HENGKO’s 10 years of technical expertise and comprehensive range of humidity and dew point products for some special industrial monitor conditions.
02
konkurrenskraftigt pris
You will get much lower and competitive price due to our extremely cost-effective control and factory supply and free OEM and ODM Service
03
uppgradering av produkter
You will always meet the ever-changing market needs with our keep-upgrading humidity transmitter products.
04
Anpassa
Du kan helt anpassa en unik daggpunktssensorprodukt baserat på vår patenterade och egendesignade daggpunktssändarserie.
04
marknadsföringsstöd
Du kommer att få starkt marknadsföringsstöd för att hjälpa dig att sälja produkter framgångsrikt, materialstöd inkluderar: högupplösta produktbilder, coola 3d-effektvideor och mycket mer.
Trusted by 100 world-class brands and organizations of all items for their industrial temperature and humidity monitor
INTRESSERAD AV ATT VARA HENGKOS AGENT
TO BE SALE DISTRIBUTOR
If you’re keen on collaborating with HENGKO as an Sales Distributor or Agent for our Temperature and Humidity Sensor Products,
we warmly invite you to contact us to discuss the specifics. Many exclusive opportunities await you.
All About High Industrial Temperature Humidity Transmitter
1.What makes the HG808 series suitable for harsh industrial environments?
The HG808 series is engineered with robust materials like 316L stainless steel probes and cast aluminum housings, providing high resistance to heat, humidity, and chemical exposure. Models like HG808-T and HG808-A are specifically built for extreme temperatures up to 200°C and dry, high-temperature dew point environments, making them ideal for kilns, ovens, coking gas pipelines, and more.
2. Can HG808 sensors operate reliably in high-temperature environments over 150°C?
Yes. The HG808-T series can operate from -40°C to +200°C and is designed with an ultra-high-temperature-resistant sensor. It maintains stable humidity measurements even between 100°C to 200°C. The HG808-A model also performs dew point monitoring up to 180°C, ideal for dry high-temp applications.
3. What industries typically use the HG808-T or HG808-A models?
These models are widely used in:
Furnace kilns and incinerators
High-temp ovens and drying systems
Steel and chemical processing plants
Gas pipelines for coking or synthesis
Power generation facilities requiring dew point control
4. How accurate are the temperature and humidity readings of HG808 sensors?
Accuracy is a core strength:
HG808-T: ±0.1°C (@85°C), ±2%RH
HG808-A: ±3°C for dew point across -20 to +100°C
This high accuracy ensures precise monitoring, even in dynamic environments.
5.How should I choose the right HG808 model for extremely high-temperature environments such as kilns or flue gas pipelines?
For environments where the air temperature exceeds 150°C, traditional temperature and humidity sensors often fail due to thermal drift or sensor degradation. The HG808-T Series is specifically engineered for such cases, supporting up to 200°C and equipped with a 316L stainless steel probe that withstands thermal stress and provides stable humidity collection even between 100°C and 200°C.
Typical use cases include:
Industrial kilns (ceramics, steel, glass)
High-temp drying ovens
Flue gas exhaust pipelines in power or chemical plants
6.What are the options for monitoring relative humidity in environments with 90–100% RH or persistent condensation?
In persistently wet or saturated air environments—such as greenhouses, swimming pools, fermentation chambers, or cleanrooms—accuracy and anti-condensation capability are critical. The HG808-H-serien is designed with:
A robust stainless steel sensor housing
Anti-condensation coating
High humidity tolerance up to 98% RH
Unlike standard RH sensors that degrade or saturate near 95% RH, the HG808-H provides stable readings in these tough environments.
7.When is dew point measurement preferred over relative humidity monitoring?
Dew point is the temperature at which air becomes saturated and condensation begins. In very dry or pressurized gas systems, RH becomes less meaningful and dew point is the key metric.
You should choose dew point transmitters like:
HG808-A Series: for high-temperature and dry applications up to 190°C
HG808-D/G Series: for ultra-low dew point detection (down to -60°C), ideal for:
Glove boxes
Lithium battery production
Semiconductor packaging
Industrial dry air systems
Dew point measurement offers more meaningful, pressure-independent metrics in these scenarios.
8.What HG808 model is best for environments with high chemical exposure (acids, vapors, solvents)?
Chemical-resistant monitoring is critical in pharmaceutical, chemical processing, and battery manufacturing. The HG808-F Series is built for such use:
Operates at -40 to +120°C and 0–100% RH
Withstands corrosive environments with a chemical-resistant sensor enclosure
Ideal for applications like:
Cleanrooms (ISO 7–9)
Battery production (e.g., lithium or NiMH)
Chemical labs or solvent storage areas
9.Which model should I use for precision measurement in temperature-controlled environments like labs or pharmaceutical storage?
Choose the HG808-C Series for high accuracy and long-term stability:
Accuracy: ±0.1°C, ±1.5% RH
Temperature range: -40°C to +150°C
Idealisk för:
Biopharmaceutical manufacturing
Calibration labs
Food & vaccine storage (requiring 24/7 monitoring)
Semiconductor packaging rooms
The model uses advanced calibration algorithms och low-drift sensors suitable for regulated industries.
10.What’s the difference between inline dew point meters (HG808-D/G) and external probe types (HG808-A)?
HG808-D/G: Inline installation within closed systems like compressed air lines or glove boxes; ideal for low dew point (< -20°C) and precise process control.
HG808-A: External probe, suited for open or semi-open high-temp systems, such as heated drying chambers or hot gas ducts, where dew point indicates dryness or risk of condensation.
11.What factors should I consider for selecting a transmitter for battery drying rooms or cathode/anode drying lines?
In battery plants, drying rooms require both low humidity och corrosion resistance. Recommended options:
HG808-F: For general drying room humidity monitoring with chemical exposure
HG808-D: For inline dew point monitoring, especially in inert gas or vacuum systems
HG808-G: For ultra-dry, low-temp gas streams
Look for dew point range below -20°C and fast response time in these scenarios.
12.Can one sensor be used for both high temperature and high humidity simultaneously?
Typically no, as sensors that handle extreme temperatures (like HG808-T, up to 200°C) are not suitable for saturated humidity at those temps. Similarly, high humidity sensors (like HG808-H) are optimized for moderate temperatures up to 100°C.
Recommendation: Evaluate your application priorities—if temperature is extreme, choose HG808-T and disregard RH accuracy. For wet high-humidity use, choose HG808-H and operate within the specified range.
13.How do I ensure stable long-term performance in harsh industrial environments?
Here are some best practices:
Choose models with industrial-grade sensors (HG808 series uses sensors rated for stability and drift resistance)
Ensure proper shielding or enclosures if exposed to corrosive vapors or condensation
Plan for annual recalibration in regulated environments (e.g., pharma or food industries)
Användning RS485/Modbus integration for remote diagnostics and maintenance
14.Are there customization options for unique industrial scenarios (OEM integration, flange mount, IP rating)?
Yes. HENGKO supports full OEM customization, including:
Custom sensor probe lengths (up to 1 meter)
Threaded or flanged mounts
Custom output signals
Enhanced IP67/IP65-rated housings
Special calibration ranges or field-specific enclosures
These are often required for system integrators or equipment manufacturers in HVAC, gas analysis, or automation industries.
Behöver du hjälp?
Kontakta HENGKO idag om du har frågor om temperatur- och fuktgivare, sändare och lösningar
+(86) 0755-28502380
sales@hengkometer.com
Kontakta oss
Senaste inlägg
Why High-Temperature and Humidity Transmitters Are Critical for Industrial Drying Processes
How to Monitor Temperature and Humidity in High-Temperature Industrial Drying Processes Quick Summary Industrial drying
200℃ High-Temperature Humidity Transmitter for Industrial Drying Ovens HG808-T
High-Temperature Humidity Transmitter for 200℃ Industrial Drying Ovens-HG808-T In many manufacturing processes, drying is more
Optimera avfuktare med avancerad övervakning av temperatur och luftfuktighet
Effective moisture management is essential in facilities where materials, equipment, and processes depend on controlled
Hur fungerar fukt- och temperaturtransmittrar?
In short, Humidity and temperature transmitters measure and send environmental data to control systems. They
förbättra din konkurrenskraft
- Ytterst djupgående anpassning
- Extremt konkurrenskraftig prissättning
- Superb R&D Capability
- Vi är fabriken direkt
- 2 års garanti på alla produkter
- 7/24/365 Support efter försäljning
Vår fördel
Varför välja USA
Låt oss berätta varför du bör välja en daggpunktstransmitter
från HENGKO
Huvudfunktioner
Svaret är enkelt: HENGKO är annorlunda.
Exakt
99.5%
Pris
55%
Effektiv
95%
Stabilisera
99.8%
Blogg
Why Standard Sensors Fail in High-Temperature Humidity Measurement ？
Why Standard Humidity Sensors Fail in High-Temperature Environments Quick Summary Standard humidity sensors are mainly designed for ambient or moderate industrial conditions. Under sustained high
News & Insight
Why Standard Sensors Fail in High-Temperature Humidity Measurement ？
Why Standard Humidity Sensors Fail in High-Temperature Environments Quick Summary
Why High-Temperature and Humidity Transmitters Are Critical for Industrial Drying Processes
How to Monitor Temperature and Humidity in High-Temperature Industrial Drying
200℃ High-Temperature Humidity Transmitter for Industrial Drying Ovens HG808-T
High-Temperature Humidity Transmitter for 200℃ Industrial Drying Ovens-HG808-T In many