High-Precision Laser-Based Dew Point Analyzer with Ultrafast Response Enabled by Tunable Diode Laser Absorption Spectroscopy (TDLAS) Technology
TDLAS Dew Point Moisture Analyzer (H2O) T-1
Dew Point Range: -70 °C DP to 20 °C DP
The TDLAS T-1 is a dew point analyzer that uses Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology to rapidly measure moisture concentration in low dew point ranges.
It accurately captures rapid fluctuations in low dew points, which are challenging for conventional methods such as capacitive type or chilled mirror techniques. The analyzer achieves high-precision measurements through proprietary sensor sensitivity enhancement technology.
Additionally, its corrosion-resistant design ensures excellent long-term stability and reliability, even in environments containing corrosive gases.
Brochure（English）
All-in-One Package for Enhanced Precision
A built-in vacuum pump draws sample gas into the detection chamber (cell). By reducing the pressure to 1/10 of an atmosphere, this proprietary technology enhances the sensitivity of TDLAS, enabling highly precise measurements of low dew points.
Dew Point Measurement Unaffected by Corrosive or Mixed Gases
Conventional dew point meters or hygrometers struggle with reliable measurements in environments containing organic solvents, acids, or alkaline gases. The TDLAS T-1 overcomes these challenges, delivering stable and accurate dew point measurements. It supports measurement in a variety of gas types, so please contact us for further details regarding specific applications.
Ultrafast Response
For rapid dew point changes, such as from 0 °C DP to -50 °C DP, conventional dew point meters (green line in the graph) typically require several minutes to tens of minutes to stabilize. In contrast, the TDLAS T-1 (red line in the graph) achieves a 90% response within 6 seconds, delivering unprecedented ultrafast response performance.
Reliable Measurement Data
- Performance evaluations were conducted in collaboration with the National Institute of Advanced Industrial Science and Technology (AIST), a leading national research institute in Japan.
- Every unit shipped undergoes comparative calibration against in-house standard instruments that are traceable to national standards provided by AIST.
Easy Operation & Data Output Functions
- 5-inch touch panel enables intuitive dew point measurement.
- Bundled software supports PC monitoring and data logging.
- Analog, digital, and relay outputs are available for external integration.
Specifications
| Product Name | Absorption Spectroscopy Dew Point Moisture Analyzer |
| Model | TDLAS T-1 |
| Measurement Method | Tunable Diode Laser Absorption Spectroscopy (TDLAS) |
| Dew Point Range | -70 ~ 20 °C DP |
| System Accuracy *1 | ±0.2 °C DP or ±2 ppm ±0.2 × DP / 20 °C DP (≥20 °C DP) |
| Operating Conditions | Temp: 5 ~ 40 °C Humidity: 35 ~ 80 % RH (non-condensing) |
| Sample Gas | Temp: 5 ~ 60 °C Flow: 0.8 L/min (typ.) |
| Measured Values | Dew/Frost Point [°C DP] Sample Gas Temp [°C] *2 Sample Gas Pressure [kPa] Cell Temp [°C] Cell Pressure [kPa] |
| Calculated Values | RH [%RH] *3 AH [g/m³] *3 Vapor Pressure [Pa] Moisture Content [ppmv, ppmw] |
| External Sensors | Temp Sensor: Pt100Ω, 4-wire |
| Outputs | Digital: RS-232C Analog: 4 ~ 20 mA, 0 ~ 5 VDC Relay: Photomos, 400 V / 240 mA |
| Power Supply | T-1-N100V: AC100V ±5% T-1-N200V: AC200V ±5% T-1-N220V: AC209 ~ 241V |
| Power Consumption | 85 W Max. |
| Dimensions | W 430 × H 222 × D 222 [mm] |
| Weight | Approx. 21 kg |
*1 Accuracy is based on stable conditions, including ambient temperature and sampling gas.
*2 An optional temperature sensor is required; however, a fixed value can be input and set for calculations in the output settings.
*3 If the optional temperature sensor is not used, calculations will be based on the fixed sampling gas temperature value set for calculations.
Key Applications
●Process control in semiconductor and secondary battery manufacturing
●Dew point management in furnaces (industrial furnaces, heat treatment furnaces, etc.)
●Dew point and moisture management in various gases
Technical Documents
- Brochure（English）