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WIKA GDHT-20 - high-precision industrial measurement instrument.
https://www.wika.cn/zh-cn/gdht_20.WIKA
WIKA is a global market leader in pressure and temperature measurement technology. With over 75 years of experience, WIKA instruments are trusted in process industries worldwide. Glorient is a professional supplier of genuine WIKA products with competitive pricing and fast worldwide delivery.
High-precision sensor technology RS-485 interface with MODBUS ® output protocol Degree of protection IP65 Excellent long-term stability and EMC characteristics Compact design
The GDHT-20 transmitter is a multi-sensor system with digital output, used for measuring pressure, temperature and humidity. Based on these measured values, condition-related data can be determined. Long-term monitoring To avoid system faults and network outages in switchgear, continuous monitoring of gas density and moisture content is essential. The GDHT-20 sensor is equipped with a powerful microprocessor that calculates the current gas density from the measured pressure and temperature values using a complex virial equation. In addition, this gas density sensor can compensate for pressure changes caused by thermal effects so that they have no influence on the output value. Furthermore, the GDHT-20 transmitter provides humidity or dew point information, enabling monitoring in accordance with CIGRE guidelines and IEC standards. Modbus ® fieldbus This model features an RS-485 interface supporting the Modbus ® RTU communication protocol. Users can configure and read the instrument's output parameters and their units as required. In addition, the GDHT-20 transmitter can be freely configured for any specified gas composition to be monitored, such as gas mixtures of SF 6 , N 2 , CF, O 2 , CO 2 , 3M™ Novec™ 4710, helium and argon. The gas density is calculated using the partial pressure method for the individual gas components. The humidity value can be output for SF 6 and N 2 gases. Signal stability The transmitter offers high long-term stability and requires no maintenance or re-calibration. In addition, this model features hermetically sealed welds and a measuring cell design without sealing elements, ensuring the permanent sealing of the measuring cell.
| Product Category | SF6 gas products |
| Product Type | Gas density sensors |
| Summary | For density temperature pressure and humidity of insulating gases with Modbus ® output |
| Applications | Continuous monitoring of gas state parameters in sealed gas compartments Suitable for indoor and outdoor SF 6 gas-insulated equipment |
| Key Features | High-precision sensor technology RS-485 interface with MODBUS ® output protocol Degree of protection IP65 Excellent long-term stability and EMC characteristics Compact design |
| Description | The GDHT-20 transmitter is a multi-sensor system with digital output used for measuring pressure temperature and humidity. Based on these measured values condition-related data can be determined. Long-term monitoring To avoid system faults and network outages in switchgear, continuous monitoring of gas density and moisture content is essential. The GDHT-20 sensor is equipped with a powerful microprocessor that calculates the current gas density from the measured pressure and temperature value |
