Specialized for hydrogen-cooled generators in the power industry: Online dew point transmitter, precisely monitoring moisture in insulating gas - SKA/WSD-LDY model
Dew point measurement range
Measured gas temperature range: -80～+20℃ Td (atmospheric dew point), -40～+60 ℃
Measurement accuracy
Dew point accuracy (air or nitrogen): ±2℃ Td (standard)
Response time 63% [90%], at gas temperature of +20℃ and pressure of 1 bar
-60 -> -30℃Td
-30 -> -60℃Td
Output: 20 S[40 S ]
5min[20min]
Product Introduction
Online-dew-point-transmitter-01
70903002
SKA/WSD-LDY type
Online dew point transmitter
It uses a polymer high-molecular sensitive capacitor, offering rapid response and stable reliability.
Damn, the measurement range is -80℃～20℃ Td, with an accuracy of ±2℃ Td across the full range. This product features automatic zero-point calibration and automatically heats to clean chemical substances attached to the sensor surface, ensuring extremely stable long-term use. This polymer dew point capacitor is the result of over twenty years of arduous research. Typically, polymer capacitors struggle to measure dew points below -40℃ Td due to the extremely low rate of change, making the signal difficult to distinguish in the circuit. Through extensive fundamental research, we have finally mastered the technology to enhance low-humidity sensitivity. Currently, when the dew point changes from -70℃ Td to -50℃ Td, the base capacitance shifts from 300 pF to 305 pF, surpassing all polymer dew point capacitors on the market.
II. Performance Advantages
n Innovative polymer thin-film sensor technology
n High accuracy measurement up to +/-2℃ Td
n Automatic heating calibration function
n Ultra-fast response speed and excellent long-term stability
n Resistant to condensation, particulate contamination, oil vapor, and most chemicals
n Multi-point temperature compensation calibration before factory shipment
n Excellent anti-interference capability
n IP65 protection rating, providing excellent protection even in harsh environments
n Low-humidity sensitivity over a hundred times greater than ordinary humidity-sensitive capacitors
n The polymer material is resistant to acids, alkalis, and water immersion, with minimal requirements for the operating environment—use with confidence
Measurement parameters
Dew point measurement range
Measured gas temperature range: -80～+20℃ Td (atmospheric dew point), -40～+60 ℃
Measurement accuracy
Dew point accuracy (air or nitrogen): ±2℃ Td (standard)
Response time 63% [90%], at gas temperature of +20℃ and pressure of 1 bar
-60 -> -30℃Td
-30 -> -60℃Td
Output: 20 S[40 S ]
5min[20min]
Main Application Areas
- Power Generation — Monitoring moisture in hydrogen-cooled generators to prevent insulation failure and ensure safe operation.
- Industrial Gas Production — Quality control of compressed air and industrial gases by measuring dew point to prevent corrosion and freezing.
- Petrochemical Processing — Ensuring dryness of process gases in refineries and chemical plants to protect equipment and product quality.
- Electronics Manufacturing — Monitoring clean dry air used in semiconductor fabrication and other moisture-sensitive processes.
Keywords：online dew point transmitter, dew point sensor, moisture analyzer, hygrometer, industrial dew point meter, -80°C Td, power generator, insulating gas
