Why Need Detect Dew Point in Natural Gas ?
Why Monitor Natural Gas Dew Point? In Short, While natural gas is a valuable resource, monitoring its dew point before use is essential. Accurate dew
Item Number: HG808-#3 Split Short Screw Probe
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:
▪Integrated design, simple and elegant
▪Industrial grade ESD safety protection and power supply anti reverse connection design
▪Using waterproof, dustproof, and high-temperature resistant probes
▪Sensitive waterproof and anti fine dust high-temperature probe
▪Standard RS485 Modbus RTU communication protocol
The ability to measure dew point makes the HG808 ideal for applications where moisture control is critical, such as:
By measuring and transmitting all three values (temperature, humidity, and dew point), the HG808 provides a comprehensive picture of moisture conditions in harsh environments.
Parameter | Value |
---|---|
Temperature range | -40 ~ 190°C ( U-series) / -50 ~ 150°C ( W-series)/ -40 ~ 150°C ( S-series) |
Dew point range | -60 ~ 80°C (U series ) / -60 ~ 80°C ( W-series ) / -80 ~ 80°C ( S-series ) |
Humidity range | 0 ~ 100%RH (recommended <95%RH) |
Temperature accuracy | ±0.1°C (@20°C) |
Humidity accuracy | ±2%RH (@20°C, 10~90%RH) |
Dew point accuracy | ±2°C (± 3.6 °F) Td |
Input and output | RS485 + 4-20mA / RS485 + 0-5v / RS485 + 0-10v |
Power supply | DC 10V ~ 30V |
Power consumption | <0.5W |
Analog signal output | Humidity + Temperature / Dew point + Temperature (choose one of the two) |
4~20mA / 0-5V / 0-10V (choose one) | |
RS485 digital output | Temperature, humidity, dew point (read simultaneously) |
Resolution: 0.01°C / 0.1°C optional | |
Communication baud rate | 1200、2400、4800、9600、19200、115200 can be set, default 9600 bps |
Acquisition frequency | Fastest 1s response, others can be set according to PLC |
HG808 Dew Point Transmitter User Manual V1.1 | 9 |
Byte format | 8 data bits, 1 stop bit, no parity |
Pressure resistance | 16 bar |
Operating temperature | – 20℃ ~ +60℃, 0%RH ~ 95%RH (non-condensing) |
With Display Series – Standard Probe
U Series
HG808-U3Y4
HG808-U3Y5
HG808-U3Y1
W Series
HG808-W3Y4
HG808-W33Y5
HG808-W3Y1
S Series
HG808-S3Y4
HG808-S3Y5
HG808-S3Y1
Without Display Series – Standard Probe
U Series
HG808-U3N4
HG808-U3N5
HG808-U3N1
W Series
HG808-W3N4
HG808-W3N5
HG808-W3N1
S Series
HG808-S3N4
HG808-S3N5
HG808-S3N1
Line Color | Definition | Specification |
---|---|---|
Power Cord | ||
Red | Power supply positive | 10 ~ 30V DC |
Black | Power supply negative | GND |
Analog Output Lines | ||
Brown | Temperature signal positive | 4-20mA output |
Blue | Temperature signal negative | Connects to Black (GND) |
Grey | Humidity signal positive | 4-20mA output |
White | Humidity signal negative | Connects to Black (GND) |
RS485 Wiring | ||
Yellow | RS485A | Twisted pair cable |
Green | RS485B | Twisted pair cable |
Additional Notes:
Important:
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:
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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