HENGKO HG808-H User Manual

Temperature and humidity transmitter

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Sense a Better World !
HG808-H
High Humidity
Temperature and Humidity
Transmitter
Users Manual
V1.1
HENGKO Technology Co., Ltd.

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Summary of Contents for HENGKO HG808-H

  • Page 1 Sense a Better World ! HG808-H High Humidity Temperature and Humidity Transmitter Users Manual V1.1 HENGKO Technology Co., Ltd.
  • Page 2: About Us

    For over 20 years of deep cultivation in the industry, HENGKO has taken the mission of "solving the filtration, perception, and analysis problems in the gas and liquid world, making life healthier", continuously improving...
  • Page 3 HG808-H Transmitters User Manual V1.1 HENGKO's products are widely used in industries such as automotive manufacturing, rail transit, aviation, high-speed rail, biopharmaceuticals, gases, compressed air, electronic devices, smart agriculture, warehouses, logistics, and food processing.
  • Page 4: Table Of Contents

    HG808-H Transmitters User Manual V1.1 Catalog About Us ................2 1. Product Introduction ............ 5 2. Technical Parameter ...........10 3. Product Selection ............13 4. Probe ................14 5. Wiring .................18 6. Instrument operation ..........22 7. Analog output calculation ......... 26 8.
  • Page 5: Product Introduction

    HG808-H Transmitters User Manual V1.1 1. Product Introduction 1.1. Product Overview HG808-H series is a high-precision temperature and humidity transmitter developed and designed specifically for industrial high humidity environments. The HG808-H series long-term stable high-precision humidity sensing capability and excellent corrosion resistance. It is equipped...
  • Page 6 HG808-H Transmitters User Manual V1.1 HG808-H series high humidity temperature and humidity transmitter is equipped with an ultra-high temperature resistant humidity sensor, which can measure temperature and humidity in working environments below+190 ℃. HG808-H series high humidity temperature and humidity...
  • Page 7: Product Dimension

    HG808-H Transmitters User Manual V1.1 1.2. Product Dimension...
  • Page 8 HG808-H Transmitters User Manual V1.1 1=Keys 2=LCD display screen 3=Aluminum alloy upper cover 4=Aluminum alloy lower cover 5=Sensor power cable 6=Sensor probe input cable 7=Sensor probe (stainless steel)
  • Page 9 HG808-H Transmitters User Manual V1.1 1.3. 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.
  • Page 10: Technical Parameter

    HG808-H Transmitters User Manual V1.1 2. Technical Parameter Range and Accuracy Temperature range -40 ~ +190°C see for details 0 ~ 100%RH Humidity range ( recommend <98%RH ) Measurement Temperature accuracy ±0.1°C(@20°C) Value 2.2 Humidity accuracy ±2%RH(@20°C,40~95%RH) Input and Output...
  • Page 11 HG808-H Transmitters User Manual V1.1 2.1. Specifications 2.2. Measurement values Relative humidity Measurement range 0~100% RH Accuracy ±2%RH(@20℃,40~95%RH) Accuracy of the humidity Factory calibration uncertainty (+20 ℃) ±0.6%RH(0~40%RH) ±1.0%RH(40~97%RH) (Defined as ± 2 standard deviation limit. There may be slight fluctuations)
  • Page 12 HG808-H Transmitters User Manual V1.1 Temperature Measurement range -40 ~ +190°C Accuracy ±0.1℃(@20℃) Accuracy of temperature...
  • Page 13: Product Selection

    Stainless steel Stainless steel Probe protection sintering grid cover HG808-H □ □ □ - □ Probe protection cover Analog signal output Display function Probe type e.g: HG808-H3Y4 -A is designed for high temperature and high humidity environments,with display,with an analog output of 4-20mA, equipped with a split type probe transmitter, and a type 3 probe with a stainless steel sintered probe protective cover.
  • Page 14: Probe

    HG808-H Transmitters User Manual V1.1 4. Probe 4.1. Probe Type The probes of the HG808 transmitter are equipped with stainless steel sintered filters from HENGKO. The conventional probe structure is shown in the table below (customizable according to customer needs): Type Probe Description...
  • Page 15 HG808-H Transmitters User Manual V1.1 Featuring dust and corrosion resistance, it can be used for temperature and humidity measurement and monitoring in Pipeline various industrial fields. Suitable for probe 5 high-temperature pipeline facilities such as large-sized pipelines and smoke pipes, as well as machine equipment working conditions.
  • Page 16 HG808-H Transmitters User Manual V1.1 4.2. Probe protection cover: Type Picture Selection instructions Stainless steel When applied in environments with sintering high humidity, low dust, and easy condensation, grid style protective Stainless steel covers are more suitable. grid...
  • Page 17: Probe Installation

    HG808-H Transmitters User Manual V1.1 4.3. Probe installation G1/2” NPT1/2 M20 * 1.5 M27 * 2 Hexagonal Hexagonal Flange Hexagonal Hexagonal threaded threaded Stainless threaded threaded Stainless steel Stainless steel steel probe Stainless steel Stainless steel probe probe probe probe...
  • Page 18: Wiring

    HG808-H Transmitters User Manual V1.1 5. Wiring The transmitter output adopts an 8-core cable, and the functions of each color wire core are defined as follows: Please check the transmitter wiring to prevent damage to the transmitter due to incorrect wiring! Please wire transmitters with different analog output types according to the diagram below.
  • Page 19 HG808-H Transmitters User Manual V1.1 4-20mA Current Type Wiring Diagram : Please double-check the sensor wiring before powering on to prevent damage to the sensor due to the wrong wire!
  • Page 20 HG808-H Transmitters User Manual V1.1 0-5V Voltage Type Wiring Diagram : Please double-check the sensor wiring before powering on to prevent damage to the sensor due to the wrong wire!
  • Page 21 HG808-H Transmitters User Manual V1.1 0-10V voltage type wiring diagram : Please double-check the sensor wiring before powering on to prevent damage to the sensor due to the wrong wire!
  • Page 22: Instrument Operation

    HG808-H Transmitters User Manual V1.1 6. Instrument operation The meter runs automatically after powering on, and when it starts, the model number of the table HG-808 will be displayed, as shown in the following figure: < > Button function HG-808 has 4 buttons, and the functions of each...
  • Page 23: Real-Time Monitoring

    HG808-H Transmitters User Manual V1.1 < > Real-time monitoring Press the button on the panel to enter the single data display mode. Temperature, humidity and dew point are displayed alternately every second, and the data is automatically refreshed. The micro water and dew point display modes are shown in the following figure.
  • Page 24 HG808-H Transmitters User Manual V1.1 Press the button on the panel to switch to the simultaneous display mode of temperature, humidity, and dew point, as shown in the following figure...
  • Page 25 HG808-H Transmitters User Manual V1.1 <Parameter settings> Press the button to display the interface that requires entering a password, as shown in the following figure: After entering the password of “ 100 ” , press the Set button again to enter the following settings interface in...
  • Page 26: Analog Output Calculation

    HG808-H Transmitters User Manual V1.1 7. Analog output calculation 4-20mA current type output signal conversion calculation: For example: The range is -40~+80°C, 4~20mA output, when the output signal is 12mA, the current temperature value is calculated. The span of this temperature range is 120°C, which...
  • Page 27 HG808-H Transmitters User Manual V1.1 0-5V voltage type output signal conversion calculation: For example: The range is -40~+80°C, 0-5V output, when the output signal is 3V, the current temperature value is calculated. The span of this temperature range is 120°C, which is expressed by a 5V voltage signal, 120°C/5V=24 °C/V,...
  • Page 28 HG808-H Transmitters User Manual V1.1 0-10V voltage type output signal conversion calculation: For example: Measuring range -40~+80°C, 0-10V output, when the output signal is 5V, calculate the current temperature value. The span of this temperature range is 120°C, which is...
  • Page 29: Heat Anti-Condensation

    HG808-H Transmitters User Manual V1.1 8. Heat anti-condensation To enable the heating and anti-condensation function, go to the HG602&808 Test Tools program and click the button on the heating function bar<ON>. minutes activating heated After anti-condensation function, the heated anti-condensation function will be automatically turned off.
  • Page 30: Communication Protocols

    HG808-H Transmitters User Manual V1.1 9. Communication Protocols Communication protocol: Modbus-RTU Default communication mode: 9600pbs,n,8,1, Address: The default value is 1 Downlink Packet Format (PLC → Instrument): Number Address Start Function CRC-16 Code Address Registers 2byte 2byte 2byte 1byte 1byte (L,H) (H,L)*...
  • Page 31 HG808-H Transmitters User Manual V1.1 The function codes used in this product are as follows: Function Code Function Description (hexadecimal) Read input register Write a single hold register...
  • Page 32 HG808-H Transmitters User Manual V1.1 Register address: Register Register Implication Bytes and data types type Address 2 bytes, Temperature 0X0000 signed integer, value magnified 100 times 2bytes, 0X0001 Humidity value unsigned integer, magnified 100 times 2 bytes, 0X0002 Dew point value...
  • Page 33 HG808-H Transmitters User Manual V1.1 4 bytes, 0X0008 Temperature signed integer, value 0X0009 magnified 1000 times 4 bytes, 0X000A Humidity value unsigned integer, 0X000B magnified 1000 times 4 bytes, 0X000C Dew point value signed integer, 0X000D magnified 1000 times 0X000E...
  • Page 34 HG808-H Transmitters User Manual V1.1 <03 Function code - Read full data with a resolution of 2 decimal places> Host query frame format(Hexadecimal): Transmitter response frame format(Hexadecimal) Eg: Tem 26.27°C, Humidity 30.55%RH, Dew point 9.01℃ The temperature and humidity calculation example is as...
  • Page 35 HG808-H Transmitters User Manual V1.1 When the temperature value is negative, the data is uploaded as a complement. For example, if the temperature is =0XFF37, it is converted to decimal: -201, divided by 100, the temperature is -2.01°C Status values: Analyzed by bit. bit0: indicates that the...
  • Page 36 HG808-H Transmitters User Manual V1.1 : Reading the temperature value (33.21°C) Example Down (upper computer /PLC) : 01 03 00 00 00 01 84 0A Up (Sensor/transmitter) : 01 03 02 0C F9 7D 06 Example 2: Reading the Dew Point Value (15.86°C)
  • Page 37 HG808-H Transmitters User Manual V1.1 <06 Function code - Set address > Format of the frame sent by the host (for example, 0X08=8) : Register address Date length CRC-16 Function (H,L) (H,L) (L,H) 0X00 0X06 0X01,0X00 0X00,0X08 0X88,0X21 The transmitter response frame is the same as the host...
  • Page 38 HG808-H Transmitters User Manual V1.1 <06 Function code - Set baud rate > Host frame delivery format (for example, set the baud rate to 9600bps) : The transmitter response frame is the same as the host sending frame: Register value and baud rate comparison table:...
  • Page 39 HG808-H Transmitters User Manual V1.1 <06 Function code - Enable/Disable anti-condensation Settings > Open Settings: 00 06 01 09 00 01 98 25 Off setting: 00 06 01 09 00 00 59 E5 Note: During opening, the temperature of the probe will rise, which will affect the accuracy of the dew point value.
  • Page 40: Maintenance And Troubleshooting

    HG808-H Transmitters User Manual V1.1 10. Maintenance and Troubleshooting <Sensor cleaning> The main body of the transmitter can be wiped and cleaned with a lint free damp cloth. Do not immerse the transmitter in liquids, and do not use cleaning agents or solutions.
  • Page 41 HG808-H Transmitters User Manual V1.1 <Troubleshooting>  Fault: After RS485 connection, there is no communication message. Possible causes and solutions:  It may be a wiring error or communication parameter error. Please carefully check the wiring and address, baud rate, register address, and other settings. In addition, incorrect power supply can also cause the transmitter to malfunction.
  • Page 42 HG808-H Transmitters User Manual V1.1  Fault: There is a communication message, and the upper computer cannot display data. Possible causes and solutions:  Some PLCs or DCS can only parse sensor data with a resolution of 0.1. HG808 provides two types of data with resolutions of 0.01 and 0.1.
  • Page 43: Testing Software Download Link

    HG808-H Transmitters User Manual V1.1 11. Testing Software Download link: Software download link: www.hkometer.com/download/ www.hengko.cn/download/...
  • Page 44: Note

    HG808-H Transmitters User Manual V1.1 12. Note 1. The product should be fully connected to the receiving end such as PLC or computer before connecting to the power supply; Do not connect the sensor or receiver after power is applied;...
  • Page 45: Safety And Warnings

    HG808-H Transmitters User Manual V1.1 Safety and warnings  Before using the product, please read the user manual carefully. When operating according to the procedures detailed in this manual, the product is safe. Do not apply this product to measuring situations greater than the maximum value stated in the manual.
  • Page 46: Contact Us

    HG808-H Transmitters User Manual V1.1 供扰和技术难题,助力客户不断地提 高产品争力,保持长期的市场竞争、 阀门、流体、半导体、航空、新能源、 食品、业等众多应用领域,从技术设 计方面支持客户…… Contact Us HENGKO Technology Co., Ltd. Address: Building 65, No. 43, Fukang Road, Pinghu Street, Longgang District, Shenzhen, China Contact number: 0086-0755-88823250 E-mail: ka@hengko.com Website: www.hengkometer.com...

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