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TD-60 Dew Point Transmitter
TD-60 type dew point transmitter is a thermoset polymer polymer sensitive capacitor, rapid response, stable and reliable, the measurement range of -60 ℃~20 ℃, the accuracy of the full range of ± 2 ℃, the product has automatic calibration zero function, long-term use of stable performance, the polymer dew point capacitor is the result of more than twenty years of hard research, because the rate of change is too low, the signal is difficult to distinguish on the circuit, we have carried out a lot of basic research work, and finally mastered the technology to improve the sensitivity of low humidity.
Technical Specification
Dew point measurement range | -60~+20℃td | |
Application temperature range | -20~+70℃ | |
Dew point accuracy (air or nitrogen) | ±2℃td (standard) | |
Response time[63%(90%), gas temperature +20℃, pressure 1bar] | -40to -30℃td | 20 seconds (40 seconds) |
-30to -40℃td | 5 minutes (20 minutes) | |
Current output (range can be changed) | 4~20mA (three-wire system) Corresponding to -80~+20℃td (standard) | |
Current output resolution | 0.002 mA | |
Current output temperature drift | 0.01% of span/℃ | |
Current output load | Not more than 500Ω | |
Power supply(Normal measurement) | 12~24V/30mA | |
Working environment | Operating temperature | -20~70℃ |
Storage temperature | -30 ℃ to 80℃ | |
Relative humidity | 0 to 95%RH | |
Sample gas flow rate | >1 L/min | |
Pressure | 0-50bar | |
shell | Stainless steel | |
Protection class | IP65 | |
Connection of mechanical parts | ISO G1/2" | |
Stainless steel mesh filter | Filtration grade 40-50um | |
Electromagnetic compatibility | Comply with IEC 61326-1 | |
TD-80 Dew Point Transmitter
TD-80 type dew point transmitter uses polymer polymer sensitive capacitor, the response is rapid, stable and reliable, the measurement range is -80 ℃ ~ 20 ℃ Td, the accuracy of the full range ± 2 ℃ Td, this product has automatic calibration zero function, and automatic thermal cleaning, long-term use is extremely stable, this polymer dew point capacitor is the result of more than twenty years of hard research, usually polymer capacitor is difficult to measure The dew point lower than -40℃Td, the signal is difficult to distinguish on the circuit because the change rate is too low, we have carried out a lot of basic research work and finally mastered the technology to improve the sensitivity of low humidity, at present, the basic capacitance changes from 300pF to 305pF from -70℃Td to -50℃Td case, which exceeds all the polymer dew point capacitors on the market.
Technical Specification
Dew point measurement range | -80 ~ +20℃Td (standard) | |
Temperature range of the gas being measured | -40~+60℃ | |
Dew point accuracy (air or nitrogen) | ±2℃td (standard) | |
Response time[63%(90%), gas temperature +20℃, pressure 1bar] | -60to -30℃td | 20s(40s) |
-30to -60℃td | 5 minutes (20 minutes) | |
Analog output | 4~20mA (three-wire system) | |
Current output resolution | 0.002 mA | |
Current output temperature drift | 0.01% of span/℃ | |
Current output load | Not more than 500Ω | |
Digital output | RS-485 | |
Power supply | Electric heating | 12~24V/250mA |
Normal measurement | 12~24V/30mA | |
Working environment | Operating temperature | -40~60℃ |
Storage temperature | -40~60℃ | |
Relative humidity ranges from | 0-95%RH | |
Sample gas flow rate | >1 L/min | |
Pressure | 0-50bar | |
shell | Stainless steel | |
Protection class | IP65 | |
Connection of mechanical parts | ISO G1/2" | |
Stainless steel mesh filter | Filtration grade 40-50um | |
Electromagnetic compatibility | Comply with IEC 61326-1 | |











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