DewGen High Accuracy Dew Point Generator
Portable Humidity Generator and Dew Point Calibration Standard Down to –80°C
Starting at: $10,950.00
The Edgetech Instruments DewGen is a high-accuracy dew/frost point generator that creates a known, precise dew or frost point for calibration, testing, and R&D. Designed for both the lab and the field, DewGen functions as a standalone humidity generator that can go wherever controlled moisture output is needed. When paired with a NIST-traceable chilled mirror hygrometer, such as the Edgetech DewMaster, DewGen becomes a highly accurate dew point calibration standard for dew point sensor calibration and validation of less accurate humidity and dew point instruments.
DewGen uses a divided flow system with a plane surface saturator to produce dew/frost points from –80°C frost point (less than 1 ppm water vapor) up to +15°C dew point, in 1°C increments. Users supply a source of dry gas (such as dry air or dry nitrogen), which is split into wet and dry streams. By setting three precision flow meters to the positions shown in the DewGen user manual, the correct wet/dry mixing ratio is achieved for a stable, repeatable output.
With mixing ratios up to 100,000:1, DewGen delivers a constantly regulated dew/frost point output without electrical power, making it ideal as a portable humidity generator for field diagnostics, troubleshooting, and calibration workflows. The system operates under positive pressure, ensuring the output flow is not affected by wet/dry mixing meter settings. It’s also inherently explosion proof, supporting use in environments where powered equipment may be undesirable.
Key Features
| Feature | Description |
|---|---|
| Output Type | High accuracy dew/frost point generator for controlled humidity output |
| Dew/Frost Point Range | –80°C to +15°C at 25°C ambient |
| Resolution | 1°C increments via selection tables |
| Generator Method | Divided flow system + plane surface saturator for wet/dry gas mixing |
| Mixing Ratios | Up to 100,000:1 for ultra-low frost points |
| Power Requirement | No electric power required, can be used anywhere |
| Stability | ±0.25°C |
| Repeatability | ±0.25°C |
| Adjustment Accuracy | ±0.5°C typical |
| Response Time | < 3 minutes |
| Output Flow Rate | 0 to 5 SCFH (0 to 2.5 L/min) adjustable |
| Operating Mode | Positive pressure operation for consistent output flow |
| Connections | ¼ in. compression fittings (input/output) |
| Safety | Inherently explosion proof |
| Portability | 15 lb system, suitable for lab and field deployment |
Known, Controlled Dew/Frost Points Generate precise dew/frost point outputs over a wide range for verification and calibration work. A Cost-Effective Dew Point Calibration Standard When connected to a NIST-traceable chilled mirror hygrometer, DewGen provides a traceable calibration system at a fraction of the cost of other approaches (including many two-pressure humidity generator systems). Portable Humidity Generator for Field Use No electrical power requirement and rugged portability make it easy to deploy wherever calibration or troubleshooting is needed. Low Dew Point Capability Mixing ratios up to 100,000:1 allow frost points down to –80°C, supporting ultra-dry gas and trace moisture applications. Stable, Repeatable Output Fast response, high stability, and repeatability support reliable test results and confidence in calibration workflows.
Calibration and Verification
- Dew/frost point calibration standard when coupled with a NIST-traceable chilled mirror hygrometer
- Verification of less accurate dew/frost point sensors and transmitters
- Reference output for validation procedures and instrument checks
Field Diagnostics
- Portable dew/frost generator for on-site troubleshooting
- Spot-checking dew point sensors in process environments
- Confirming dry gas system performance and moisture control
- Dew/frost point experimentation for scientific applications
- Controlled humidity output for method development and testing
Q: What dew/frost point range can DewGen generate?
A: DewGen generates dew/frost points from –80°C to +15°C at 25°C ambient.
Q: Does DewGen require electrical power?
A: No. DewGen requires no electric power, making it well-suited for portable and field applications.
Q: How does DewGen select a specific dew/frost point?
A: The operator sets three precision flow meters to positions shown in the manual’s selection tables to create the correct wet/dry gas mixing ratio, producing the desired dew/frost point output.
Q: What gas supply is required?
A: You supply a dry gas source (dry air or dry nitrogen). The input gas should be at least 20°C dryer than the lowest dew/frost point you intend to generate.
Q: Is DewGen NIST traceable?
A: DewGen becomes NIST traceable when its output is connected to a NIST-traceable chilled mirror hygrometer (such as DewMaster), creating a traceable dew/frost point generator system.
Configure Your Dew Point Generator System
Need a complete calibration setup for dew point sensor calibration and validation? Edgetech Instruments can help you build a complete system, including:
- DewGen generator configuration guidance
- Recommended dry gas supply setup (air or nitrogen)
- Pairing with a NIST-traceable chilled mirror hygrometer for traceable calibration workflows
Call 978-310-7760 or request price and availability to configure your dew point generator solution.
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