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Industrial High Temperature Condition Humidity & Dew Point Monitor Solution

HG808 Sereris

Your Best Humidity Monitor for Industrial High Temperature Condition Long Term Work and Measurement

Industrial High Temperature and Humidity Sensor and Dew Point Transmitter Solution

Il HG808-T Series is HENGKO’s advanced industrial-grade temperature and humidity transmitter, meticulously engineered for continuous monitoring in extreme high-temperature environments up to 200°C. Designed for harsh applications such as kilns, industrial ovens, and flue gas pipelines, this model ensures long-term measurement stability and durability where conventional sensors fail.

Equipped with a high-performance 316L stainless steel probe, the HG808-T delivers reliable measurements even in environments with strong heat radiation, volatile gases, or particulate-laden exhaust flows. It offers exceptional accuracy of ±0.1°C and ±2% RH, even under thermal shock and rapid environmental changes.

Whether you’re monitoring process air in combustion systems, high-temp drying chambers, or industrial exhaust outlets, the HG808-T provides an uncompromising solution for real-time environmental control, process safety, and compliance with industrial quality standards.

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Not Sure How to Choose? Here's Your Guide

ModelloBy Application ConditionKey Features
HG808-TContinuous High-temperature environments (kilns, ovens, flue gas)– Measures up to 180°C
– Stainless steel probe
– Long-term stability

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-T

  • High-Temperature Humidity Transmitter
    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
High temperature industrial humidity transmitter HG808-T new icon

High-temp Industrial Environment Temperature and Humidity Transmitter

HG808-T series
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HG808 Series Products

  • Dew Point Monitor Solution

HG808 also offers specialized dew point monitoring solutions tailored for challenging industrial environments — including high temperature, high humidity, corrosive conditions, and chemical exposure.
Explore the models below to select the right humidity transmitter for your specific application needs.

✅ HG808-A

  • Ultra High-Temperature Trasmettitore di punto di rugiada (up to 180°C)
    Built for ultra-high temperature industrial applications with strong anti-interference design.
190 ℃ High temperature industrial dew point transmitter HG808-A icon

180° Ultra High-temperature Dew Point Transmitter for Industrial Applications

HG808-A series
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Datasheet

Here’s a table summarizing the main datasheet and various features of the HG808 High Temperature Series. Please check below. :

Modello Temperature Range (°C) Humidity Range (% RH) Dew Point Range (°C) Precisione della temperatura
(Temperature / Humidity / Dew Point)		 Special Features Applicazioni
HG808-T Series
(High Temperature Transmitter)		 -40 to +200℃ 0–100% RH N/A ±0.1°C (@85℃) / ±2%RH (@20℃, 10–90%RH) Ultra-high temperature resistant sensing element, 316L stainless steel probe.
Maintains good humidity collection performance even at high temperatures between 100°C and 200°C. 		Collecting humidity data from high-temperature gases in various applications
like furnace kilns, high-temperature ovens, and coking gas pipelines.
HG808-A Series
(Ultra High Temp Dew Point Meter)		 -80 to +180℃ N/A -20 to +100℃ ±3°C Td Designed specifically for measuring dew point in high-temperature and dry environments.
Features a robust cast aluminum housing and stainless steel sensor assembly for accurate measurements up to 190°C. 		Ideal for dew point measurement in challenging 190℃ high-temperature and dry environments.

Humidity Probe Option

Offriamo 6 tipi di sonde per il trasmettitore di umidità HG808, con ciascun tipo disponibile nelle versioni A e B, per un totale di 12 sonde per varie opzioni applicative.

Sonda di umidità serie A

Tipo A Sonda di umidità in acciaio inox poroso

0A#

#A1 Sonda di umidità per trasmettitore di umidità

1A#

#A3 Sonda di umidità per trasmettitore di umidità

3A#

#A5 Sonda di umidità per trasmettitore di umidità

5A#

#A6 Sonda di umidità per trasmettitore di umidità

6A#

#A8 Sonda di umidità per trasmettitore di umidità

8A#

Sonda di umidità serie B

Sonda di umidità in acciaio inox di tipo B

0B#

#B1 Sonda di umidità per trasmettitore di umidità

1B#

3B#

5B#

6B#

8B#

Probe Installation

Opzione connettore sonda
Sonda di umidità in acciaio inox con filettatura esagonale M20

Connettore per sonda in acciaio inox con filettatura esagonale M20

G1/2 Sonda di umidità in acciaio inossidabile con filettatura esagonale

Connettore per sonda in acciaio inox con filettatura esagonale G1/2

NTP1/2 Sonda di umidità in acciaio inossidabile con filettatura esagonale

NTP1/2 Connettore per sonda in acciaio inox a filettatura esagonale

Sonda di umidità in acciaio inox con filettatura esagonale M27

Connettore per sonda in acciaio inox con filettatura esagonale M27

Sonda di umidità in acciaio inox con flangia M20

Connettore per sonda in acciaio inox con flangia M20

Applicazioni

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.

Processi industriali

Quality Assurance: Monitoring Conditions in Manufacturing
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Sistemi HVAC

Comfort and Efficiency: Regulating Indoor Air Quality
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Centri dati

Server Efficiency: Maintaining Ideal Operating Conditions
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Controllo del clima nelle serre

Optimizing Plant Growth: Precision Climate Management
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Conservazione e refrigerazione degli alimenti

Preserving Freshness: Critical Monitoring for Perishable Goods
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Get Solution by YOUR Applciation

Produzione farmaceutica

Ensuring Compliance: Critical Environment Monitoring
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Let us tell you why you should choose a humidity transmitter from HENGKO

Perché scegliere gli Stati Uniti

HENGKO è un fornitore professionale di soluzioni per sensori industriali di temperatura e umidità, con una reputazione di design unico e prestazioni eccellenti. 

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

Soluzione

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

prezzo competitivo

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

aggiornamento dei prodotti

You will always meet the ever-changing market needs with our keep-upgrading humidity transmitter products.

04

personalizzare

È possibile personalizzare completamente un prodotto unico di sensore di punto di rugiada basato sulla nostra serie di trasmettitori di punto di rugiada brevettati e autoprogettati.

04

supporto al marketing

Avrete un forte supporto di marketing per aiutarvi a vendere i prodotti con successo, il materiale di supporto include: immagini dei prodotti ad alta risoluzione, video ad effetto 3d e molto altro ancora.

Trusted by 100 world-class brands and organizations of all items for their industrial temperature and humidity monitor

SOLVAY
SGS
P e G
Honeywell
GRANDE MURO
FOXCONN
Emerson
CRRC
CETC
CASC

INTERESSATO A DIVENTARE AGENTE DI HENGKO

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.

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All About High Industrial Temperature Humidity Transmitter

Why Use High Temperature and Humidity Transmitter in some Industrial Environment?

 

High temperature and humidity transmitters with sensors capable of handling 200°C (392°F) are crucial in specific industrial environments for several key reasons:

Extreme Process Monitoring: 

Many industrial processes operate at very high temperatures. Examples include:

  1. Generazione di energia: In power plants, monitoring humidity and temperature in turbines and exhaust systems is essential for efficiency and safety. High humidity can lead to corrosion of turbine blades, while excessively dry conditions can increase static electricity and the risk of explosions.
  2. Chemical Manufacturing: Chemical reactions often require precise temperature and humidity control. High-temperature humidity sensors ensure these parameters are met for consistent product quality and to prevent hazardous reactions
  3. Metal Processing: Activities like heat treatment, drying, and curing metals often involve high temperatures. Humidity control is crucial to prevent defects like warping or cracking in the final product.
 

Harsh Environment Data Collection: 

Certain industrial settings are inherently hot and humid. These transmitters can gather reliable data in:

  1. Ovens and Dryers: Monitoring humidity in ovens used for drying products like paints, textiles, or food ensures proper drying without burning.
  2. Paper Mills and Pulp Processing: Maintaining humidity control in paper production prevents warping and improves paper quality.
  3. Produzione di vetro: Humidity sensors in glass furnaces help regulate the curing process and prevent imperfections in the final glass product.
 

Specialized Material Compatibility: 

Sensors designed for 200°C environments often use special materials to withstand the heat. This allows for accurate measurement in processes that might damage conventional sensors:

  1. Semiconductor Fabrication: Precise temperature and humidity control are crucial in cleanroom environments for manufacturing delicate electronic components.
  2. Textile Processing: Heat setting and drying textiles often involve high temperatures. Humidity sensors ensure consistent quality and prevent fabric damage.
  3. Rubber and Plastics Production: High-temperature humidity monitoring is necessary during the curing and drying of rubber and plastic products.
 

In essence, high-temperature and humidity transmitters with 200°C sensors are vital for industrial processes that demand precise control and data collection

in extremely hot and humid environments. Their ability to withstand harsh conditions and utilize specialized materials makes them irreplaceable for these demanding applications.

Main Features of High Temperature and Humidity Transmitter and Sensor

High temperature and humidity transmitters with sensors designed to handle up to 200°C (392°F) boast specific features that make them ideal for harsh industrial environments. Here are some key characteristics:

1. High-Temperature Resistance: 

The primary feature is the sensor’s ability to withstand temperatures as high as 200°C. This is achieved through special materials like:

    • High-temperature polymers: These polymers can maintain their structural integrity and electrical properties at elevated temperatures.
    • Ceramic substrates: These substrates offer excellent thermal stability and can withstand high temperatures without degrading.
    • Corrosion-resistant metals:Metals like Inconel or Hastelloy are used for their resistance to corrosion and oxidation at high temperatures.
       
      Image of High temperature and humidity sensor with ceramic substrate 
 

2. Accurate Humidity Measurement:

Even in hot environments, these sensors deliver precise readings of relative humidity. This is often achieved through:

    • Sensori capacitivi: These sensors use a capacitor that changes capacitance based on the amount of moisture absorbed by a hygroscopic material.
    • Sensori resistivi: These sensors rely on the change in electrical resistance of a material due to adsorbed moisture.

3. Durable Construction:

The entire transmitter is built to endure the harsh conditions of industrial settings. This includes:

    • Stainless steel housings: These housings provide excellent resistance to corrosion, dust, and physical impact.
    • Sealed enclosures: The electronics are sealed to protect them from moisture, dust, and contaminants.

4. Output Signal Compatibility:

These transmitters provide industry-standard output signals for easy integration with data acquisition systems. Common outputs include:

    • Anello di corrente 4-20 mA: This widely used analog signal transmits data over long distances without signal degradation.
    • Modbus RTU: This digital communication protocol enables two-way communication between the transmitter and a control system.

5. Calibration Capabilities:

Molti trasmettitori di temperatura e umidità offrono opzioni di calibrazione per garantire una precisione a lungo termine. Ciò può comportare:

    • Remote calibration: Calibration can be performed without removing the sensor from the process, minimizing downtime.
    • User-selectable calibration points: The user can choose specific temperature and humidity points for calibration to match the application’s requirements.

 

In conclusion, high temperature and humidity transmitters with 200°C sensors are feature-rich instruments designed for the specific demands of hot

and humid industrial environments. Their ability to withstand extreme temperatures, deliver accurate measurements, and function reliably make them

valuable tools for process monitoring and control in various industrial sectors.

 

Types of High Temperature and Humidity Transmitter ?

There are two main types of high temperature and humidity transmitters based on the sensing technology used:

1. Capacitive High Temperature and Humidity Transmitters:

These transmitters use a capacitive sensor to measure humidity. The sensor consists of two parallel plates separated by a hygroscopic material.

As humidity changes, the amount of moisture absorbed by the hygroscopic material changes, which in turn affects the capacitance between the plates.

This change in capacitance is measured electronically and converted into a humidity reading.

 
Image of Capacitive high temperature and humidity transmitter sensor 

Vantaggi:

  • Highly accurate, especially at high temperatures
  • Fast response time
  • Good long-term stability

Svantaggi:

  • Can be more expensive than resistive sensors
  • More susceptible to contamination

 

2. Resistive High Temperature and Humidity Transmitters:

These transmitters use a resistive sensor to measure humidity. The sensor consists of a polymer film that changes its electrical resistance

based on the amount of moisture absorbed. As humidity increases, the resistance of the film decreases, and vice versa. This change in resistance

is measured electronically and converted into a humidity reading.

HG808 Industrial Temperature Humidity Transmitter with Display

 

Vantaggi:

  • Lower cost than capacitive sensors
  • Less susceptible to contamination

Svantaggi:

  • Less accurate than capacitive sensors, especially at high temperatures
  • Slower response time
  • Can have poorer long-term stability

The best type of high temperature and humidity transmitter for a particular application will depend on the specific requirements

of the application, such as the required accuracy, response time, and cost.

 

What Factors You Should Consider for High Temperature and Humidity Transmitter for Your Industrial Monitor Projects and System ?

Here are some key factors to consider when choosing a high temperature and humidity transmitter for your industrial monitoring projects and systems:

1.Temperature Range:

  • Required temperature range: First and foremost, identify the minimum and maximum temperatures your transmitter will be exposed to during operation. Ensure the sensor can handle the entire anticipated temperature range, with a buffer of at least 10-20°C for safety. Operating outside the specified range can damage the sensor and lead to inaccurate readings.
  • High-temperature spikes: Consider if there will be occasional spikes in temperature that exceed the sensor’s normal operating range. Some sensors can withstand short-term excursions above their limit.

2.Humidity Range:

  • Required humidity range: Determine the expected range of humidity levels you need to monitor. Most high-temperature sensors can handle a wide humidity range (often 0-100% RH), but double-check to ensure it meets your project’s needs.

3.Accuracy and Response Time: 

  • Requisiti di precisione: Define the level of accuracy required for your application. Capacitive sensors generally offer higher accuracy, especially at high temperatures, compared to resistive sensors.
  • Tempo di risposta: Consider how quickly you need the sensor to respond to changes in humidity. A faster response time is crucial for applications requiring real-time monitoring and control.

trasmettitore di umidità ad alta temperatura con sonda metallica a vite corta display

4.Environmental Conditions:

  • Chemical exposure: If the transmitter will be exposed to harsh chemicals, choose a model with a housing and sensor materials resistant to those chemicals.
  • Dust and debris: If dust or debris is a concern, a transmitter with a filter or a purge system can help to prevent the sensor from becoming clogged.

5.Output Signal:

  • Compatibility with your data acquisition system: Ensure the transmitter’s output signal (e.g., 4-20 mA current loop, Modbus RTU) is compatible with your existing data acquisition system or controller.

6.Calibration:

  • Calibration requirements: Think about how often you will need to calibrate the transmitter and choose a model with user-friendly calibration options, such as remote calibration or user-selectable calibration points.

7.Additional Considerations:

  • Costo: High-temperature and humidity transmitters can vary significantly in cost. Determine your budget and choose a model that meets your needs without exceeding your budget.
  • Brand reputation: Consider the reputation of the transmitter manufacturer and choose a brand known for quality and reliability.
  • Warranty: Look for a transmitter with a good warranty to protect your investment.

By carefully considering these factors, you can select a high temperature and humidity transmitter that is well-suited for your specific industrial monitoring project and system.

Where to Industrial High Temperature and Humidity Transmitter or Sensor ?

You can find industrial high temperature and humidity transmitters from various manufacturers, but HENGKO is certainly one option to consider. Here’s a breakdown to help you decide:

Where to Find High Temperature and Humidity Transmitters:

  • Industrial automation suppliers: Many companies specialize in supplying industrial automation equipment, including sensors and transmitters. You can search online or contact local automation suppliers to find options in your area.
  • Online marketplaces: Various online marketplaces sell industrial equipment, including high temperature and humidity transmitters. Popular platforms include:
  • Manufacturer websites: Many manufacturers of high temperature and humidity transmitters sell directly through their websites. This can be a good option if you are looking for a specific brand or model. HENGKO, for instance, offers their products through their website https://www.hengkometer.com/.

 

Why Consider HENGKO High Temperature and Humidity Transmitters:

HENGKO offers high temperature and humidity transmitters with sensors capable of withstanding up to 200°C,

making them suitable for various demanding industrial applications. Here are some reasons to consider their products:

  • Focus on high temperature: HENGKO specifically highlights their transmitters’ ability to function in harsh environments, potentially aligning well with your needs.
  • Durability and chemical resistance: Their product descriptions emphasize features like durable construction and special treatment for sensor surfaces, which might be important in your industrial setting.
  • Variety of options: HENGKO offers different models with features like various output signals and user-selectable calibration, potentially providing flexibility for your project.

Before Choosing HENGKO:

  • Research other options: It’s wise to compare HENGKO’s offerings with those from other manufacturers to ensure you get the best fit for your needs. Consider factors like price, features, and warranty terms when comparing different brands.
  • Check specifications: Carefully review the technical specifications of HENGKO’s transmitters, particularly the temperature and humidity range, accuracy, response time, and output signal. Ensure they align with your project requirements.
  • Read reviews: If available, look for online reviews of HENGKO’s high temperature and humidity transmitters from other customers. This can provide insights into real-world experiences with their products.

By considering these aspects, you can make an informed decision about whether a HENGKO high temperature and humidity transmitter is the right choice for your industrial monitoring project.

Industrial High Temperature and Humidity Transmitter price is too High ? Choose HENGKO

You’re right, industrial high temperature and humidity transmitters can be expensive. Here are some options to consider if price is a major concern:

  • Explore Alternatives to HENGKO: While HENGKO offers high-temperature resistant transmitters, they may not be the most budget-friendly option. Research other manufacturers like:
  • Consider Resistive Sensors: If high accuracy at the very peak of the temperature range isn’t crucial, resistive sensors can be a more affordable option compared to capacitive sensors typically used in high-temperature models. They offer reasonable accuracy at high temperatures but may have slower response times and lower overall accuracy.
  • Reduce Features: If certain features aren’t essential for your project (e.g., remote calibration, user-selectable calibration points), opting for a simpler model can bring down the cost.
  • Look for Used Equipment: Reputable industrial equipment suppliers sometimes sell used or refurbished high-temperature and humidity transmitters. This can be a cost-effective option if you’re on a tight budget, but ensure the transmitter is in good working condition and comes with a warranty.

 

BrandModelloTemperature Range (°C)Humidity Range (%RH)Segnale di uscitaPrice (USD)
HENGKOHG808-T-40 to 200℃0 to 1004-20mA, Modbuss RS485, 0-5V, 0-10V$250 – $400
OmegaHXNH-TH-40 to 2000 to 1004-20mA, Modbus RTU$300 – $500
Dwyer InstrumentsSeries HTI-40 to 1770 to 1004-20mA$200 – $350
E+E ElektronikEE360-20 to 2000 to 1000-10V, 4-20mA$400 – $600
Budget Option(Various)-20 to 1500 to 1004-20mA$100 – $200
 

Here’s why choosing a budget-friendly option might not always be best:

  • Potential for Inaccuracy: Less expensive transmitters might have lower accuracy, especially at high temperatures. This could lead to unreliable data and issues with process control in your industrial application.
  • Durability Concerns: Budget-friendly transmitters might not be as durable or have enclosures as resistant to harsh chemicals as pricier models. This could lead to premature failure and replacement costs down the line.
  • Limited Features: Simpler models might lack features like remote calibration or user-selectable calibration points, making them less convenient to use and maintain.
 

Ultimately, the decision depends on your specific needs and priorities. If accurate and reliable data acquisition is critical for your industrial process, a higher-quality transmitter might be a worthwhile investment despite the initial cost.

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sales@hengkometer.com

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