High-precision, long-term stable, and durable chilled mirror dew point hygrometer designed for high dew point applications such as fuel cell evaluation systems, sintering furnaces, and high-humidity durability testing of electronic components and materials.
DewStar S-3
Dew Point Range: 0 ℃DP to 95 ℃DP
DewStar S-3 is a chilled mirror dew point hygrometer (also known as a mirror-type or optical dew point hygrometer) designed for high humidity applications. It provides excellent long-term stability, high measurement performance, and reliability for high dew point measurements. Ideal as a calibration reference standard in high dew point ranges, it is also well-suited for managing environments in fuel cell evaluation systems, various sintering furnaces, and high-humidity durability testing for electronic components and new materials.
Brochure (English)
Features
- Equipped with a uniquely designed AccuStar (automatic mirror cleaning mechanism).
- Optional durable platinum mirror enables measurement of corrosive gases.
- Calculation functions allow on-site confirmation of various measurement values.
- Portable and transportable dew point hygrometer.
Key Applications
- Fuel cell evaluation systems
- Reference standard for durability testing of various electronic components
- Dew point management in sintering furnaces, etc.
Order Code
| Code | Mirror | Sensor Unit Coating |
| S-3S-0 | Rhodium | x |
| S-3S-4 | Platinum | x |
| S-3S-6 | Platinum | o |
*1 Separate monitor (S-1M-0) for the chilled mirror dew point hygrometer is required.
*2 Platinum mirror and sensor unit coating enable measurement of corrosive gases. For details on compatible gases, please contact us.
| Product Name | Chilled mirror optical dew point hygrometer |
| Model | DewStar S-3 |
| Dew Point / Frost Point Range | 0 ～95 ℃DP（at 25 ℃） |
| System Accuracy | ± 0.2 ℃DP |
| Repeatability | ±0.05 ℃DP |
| Operating Conditions | Sensor Unit: 0 ~ 60 ℃ Monitor Unit: 0 ~ 35 ℃ ≤ 95%rh (non-condensing) |
| Pressure | Barometric pressure ~ 0.35 MPaG |
| Sampling Flow Rate | 0.5 ~ 2.5 L/min |
| Measured Values | Dew Point / Frost Point (℃) Temperature (℃) Pressure (kPa) |
| Calculated Values | Relative Humidity (%rh) Absolute Humidity (g/m³) Moisture Content (PPMv, PPMw) |
| Outputs | Digital: RS-232C Analog: 4 ~ 20 mA, 0 ~ 5 VDC PhotoMOS Relay |
| Sample Gas IN-OUT | 1/4″ Compression Fitting |
| Power Supply | AC 90 ~ 240 V（50 / 60 Hz） |
| Power Consumption | 100 W |
| Dimensions | Sensor Unit : W 152 x H 147 x D 356 [mm] Monitor Unit : W 203 x H 105 x D 33 [mm] |
| Weight | Sensor Unit : Approx. 2.9 kg Monitor Unit : Approx 0.5 kg |
| Included Items | Sensor Unit ⇔ Monitor Unit Connection Cable (Standard 3 m) |
Options
- Temperature Sensor S-1S-001
- Pressure Sensor S-1S-002
- Air Pump Unit S-PU
Technical Documents
- Brochure (English)