The DryCal 800 is a positive displacement primary piston prover for gas flow measurements in either pressure or vacuum applications. It combines the accuracy of a primary standard with unequalled speed and convenience. It meets the most stringent laboratory and industrial process control requirements, making it an ideal solution.
DryCal 800: Primary Piston Prover
A positive displacement primary piston prover for gas flow measurement
• ±15% Accuracy Primary Flow Standard
• NVLAP accredited, ISO 17025
• Proven DryCal technology features a near frictionless piston and flow cell design that provides highly accurate, liquid free and reliable gas flow readings independent of the gas species measured.
• 5 interchangeable flow cells available to range from 0.5ccm to 100SLPM.
• User friendly Drycal Pro Software to view and plot data in real time and export.
• LCD touch screen
• Variable Area Gas flow meter Calibration
• Flow bench systems available for specific applications
• Integrator Pro to allow fast and accurate calibration of MFCs and MFMs
• Firmware upgrade via communication port- no disassembly required.
Technical Specifications
- 0.5 sccm – 100 slpm Flow Range.
- 0.25% Measurement Uncertainty (0.5 – 50 sccm).
- 0.15% Measurement Uncertainty (5 – 100,000 sccm).
- 5 Interchangeable Flow Cells.
- Proven DryCal Technology – Accurate and reliable gas flow readings independent of gas species measured.
- Innovative – 100:1 turndown ratio; accurately measuring flow rates as low as 0.5 sccm.
- Simple touch screen operation.
- Quality and Expertise — 0.08% Scope of Accreditation for gas flow by NVLAP of NIST; Over 20 years of experience providing training, installations, system consulting, and custom solutions.
- 1/4″ ID Swagelok® tube compression fitting (1/8″ fittings Model 800-3) (1/2″ outlet fitting Model 800-44)
- Serial (RS-232) and USB.
- CE / RoHS compliance
| Model | Flow Ranges | Standardized Accuracy | Time per Reading | Weight |
| 200-800-DCB-R |
|
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| 200-800-3
50 mLPM |
0.5-50 sccm | +/-0.25%, +/-0.002 sccm | 1-60 seconds | 80 oz / 2300 g |
| 200-800-10
500 mLPM |
5-500 sccm | +/-0.15% | 3-135 seconds | 85.1 oz / 2412.5 g |
| 200-800-24
5 LPM |
50-5,000 sccm | +/-0.15% | 3-90 seconds | 86 oz / 2439.3 g |
| 200-800-44
50 LPM |
500-50,000 sccm | +/-0.15% | 1-35 seconds | 88.4 oz / 2507 g |
| 200-800-75
100 LPM |
1-100 slm | +/-0.15% | 1-50 seconds | 160 oz / 4535 g |




