Harsh Environment Humidity Transmitter with Porous Metal Probe 4-20mA, RS485, 0-5V, 0-10V Output, Split Long Screw Probe

Numer pozycji:  HG808-K series

HG808 Super High Temperature Humidity Transmitter

The HG808 is an industrial-grade temperature, humidity, and dew point transmitter designed for harsh environments with high temperatures. In addition to measuring and transmitting temperature and humidity, the HG808 calculates and transmits the dew point, which is the temperature at which air becomes saturated with water vapor and condensation begins to form.

Here’s a breakdown of the key features:

  • Temperature range: -40 ℃ to 190 ℃ (-40 °F to 374 °F)
  • Probe: The transmitter is equipped with a high-temperature probe that is waterproof and resistant to fine dust.
  • Output: The HG808 offers flexible output options for temperature, humidity, and dew point data:
    • Standard industrial interface RS485 digital signal
    • 4-20 mA analog output
    • Optional: 0-5v or 0-10v output
  • Display: The transmitter has an integrated display for viewing temperature, humidity, and dew point readings.
  • Łączność: The HG808 can be connected to various industrial control systems, including:
    • On-site digital display meters
    • PLCs (Programmable Logic Controllers)
    • Frequency converters
    • Industrial control hosts

SPECYFIKACJA

Najważniejsze cechy produktu:

Zintegrowana konstrukcja, prosta i elegancka
Przemysłowa ochrona przed wyładowaniami elektrostatycznymi i konstrukcja zapobiegająca odwrotnemu podłączeniu zasilania
Zastosowanie wodoodpornych, pyłoszczelnych i odpornych na wysokie temperatury sond.
Czuła, wodoodporna i odporna na drobny pył sonda wysokotemperaturowa
Standardowy protokół komunikacyjny RS485 Modbus RTU

The ability to measure dew point makes the HG808 ideal for applications where moisture control is critical, such as:

  • HVAC systems
  • Industrial drying processes
  • Weather monitoring stations
 

By measuring and transmitting all three values (temperature, humidity, and dew point), the HG808 provides a comprehensive picture of moisture conditions in harsh environments.

HG808 Data Sheet Details

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

KategoriaSpecyfikacja
Zakres temperatur-40 ~ +190°C
Zakres wilgotności0 ~ 100% RH (Recommend < 95% RH)
Temperature Accuracy±0.1°C (@ 20°C)
Humidity Accuracy±2% RH (@ 20°C, 10 ~ 90% RH)
ZasilanieDC 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 bitów danych, 1 bit stopu, brak kontroli
Pressurization16 bar
Working Temperature-20°C ~ +60°C, 0% RH ~ 95% RH (Non-condensation)
Probe Type

Split type:

Probe 0 –Split type  :0A# / 0B#

Probe 1 –Split type  :1A# / 1B#
Probe 3 – Pipeline :3A# / 3B#

Probe 5 – Pipeline :5A# / 5B#

Probe 6 – Pipeline :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

Informacje o instalacji

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

Standard okablowania wyjścia analogowego typu 4-20 mA + RS485

Kolor liniiDefinicjaSpecyfikacja
Przewód zasilający  
CzerwonyZasilanie dodatnie10 ~ 30 V DC
CzarnyZasilanie ujemneGND
Linie wyjścia analogowego  
BrązowyDodatni sygnał temperaturyWyjście 4-20 mA
NiebieskiUjemny sygnał temperaturyŁączy się z czarnym (GND)
SzarySygnał wilgotności dodatniWyjście 4-20 mA
BiałyUjemny sygnał wilgotnościŁączy się z czarnym (GND)
Okablowanie RS485  
ŻółtyRS485AKabel typu skrętka
ZielonyRS485BKabel typu skrętka

Dodatkowe uwagi:

  • Udźwig:
    • Wyjście prądowe: ≤ 600Ω
    • Napięcie wyjściowe (nie dotyczy tej tabeli): ≤ 250Ω
 
  • Odpowiednie modele: All HG808 Series
 

Ważne:

  • Szczegółowe instrukcje podłączania i wszelkie dodatkowe wymagania można znaleźć w instrukcji obsługi urządzenia.
  • Upewnij się, że na magistrali RS485 używane są odpowiednie rezystory terminujące, zgodnie z instrukcją obsługi urządzenia i odpowiednimi standardami komunikacji.
  • Nie próbuj podłączać przewodów elektrycznych bez odpowiedniej wiedzy i kwalifikacji.
  •  

WNIOSEK

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 200°C and down to -50°C) are crucial:

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.
  • 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 -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.
 

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

1.1 Product Overview

The HG808-K series harsh environment temperature and humidity transmitter offers long-term stability and high-precision humidity sensing, featuring excellent corrosion resistance. Constructed with a robust cast aluminum housing and stainless steel sensor components, it is designed for accurate temperature and humidity detection in extreme industrial conditions, with temperatures reaching up to 190°C. This transmitter is equipped with an ultra-high temperature resistant humidity sensor, making it ideal for applications in high-temperature process engineering, industrial drying, flue gas emissions, and constant temperature and humidity test chambers. Its strong corrosion resistance enables reliable performance in the presence of oil vapor, dust, and other chemicals, making it suitable for monitoring corrosive gases from industries like petrochemicals and refineries. If the HG808-K series does not meet your specific measurement needs, please contact our customer service for alternative temperature and humidity measurement options. Thank you for your interest!

1.2 Function Features

  • Split/pipeline probe designed for strong anti-pollution and oil resistance.
  • Simultaneously supports RS485 output and two analog outputs.
  • Provides 15-bit high-resolution analog output; digital output options include resolutions of 0.1 or 0.01.
  • Supports both single and multi-register reading.
  • Features an anti-condensation function to maintain sensor accuracy in high humidity.
  • Digital output can read dew point, humidity, temperature, and PPM values concurrently.
  • Utilizes the standard Modbus RTU protocol for seamless integration with PLCs, DCS, and various configuration software.
  • Offers a wide voltage input (10V-28V), overcurrent protection, power polarity protection, industrial-grade ESD safety, and reverse polarity protection.

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