| DIGAMIX® Gas Dilution Systems |
| DIGAMIX® Gas Mixing Pumps |
DIGAMIX® Gas Dilution Systems |
| DIGAMIX® Gas Forwarding Pumps |
DIMIKUR® Micro-Dosing Systems |
- High-precision dilution of compressed calibration gas standards
- Preparation of high-precision, multi-component gas mixtures
- High-precision gas forwarding
Methodology and Application
DIGAMIX® and DIMIKUR® instruments, manufactured by Wösthoff, GmbH, employ variable or constant stroking, positive displacement pumps to produce high-precision gas flows, dilute pure or prediluted compressed gas standards and produce multi-component precision gas mixtures.
These gas concentrations and precision gas flows are used for calibration of ambient, process and continuous emission (CEM) gas analyzers, monitors, detectors and gas chromatographs. They are also used in pulmonary and respiratory analysis; controlled bioclimatic research chambers; bioreactors; and other industrial process, environmental, laboratory and research applications where high precision gases are required. These pumps may also be used as precision gas forwarding units for individual or multiple gas streams.
Accuracy and Dilution Increments
Driven by single 3-phase synchronous motors, DIGAMIX® instruments deliver better than ± 0.25% to ± 1.00% gas dilution accuracies, relative to the selected dilution concentration. Accuracy depends upon the specific DIGAMIX pump model or gas dilution system used.
Volumetrically-fixed (primary standard), piston/cylinder pumps provide repeatable standard dilution increments from fractional percent to 99.99%. Individual DIGAMIX pump units may be cascaded to achieve still lower dilution levels, providing maximum user flexibility. DIMIKUR micro-dosing dilution systems achieve gas concentrations as low as 2-10 ppb.
Ambient Operating Conditions
All DIGAMIX® pumps operate at near ambient gas pressure(s) and equal gas temperature(s), eliminating random error from differences or changes in gas input temperatures or pressures. Final diluted gas concentrations are normally delivered at ambient pressure, although DIGAMIX units may be augmented with a forwarding pump if additional output pressure is required.
Operator Controls
Manually interchangeable gear pairs; dynamically switchable dials (shown on Model M/300a above); pushbutton or PC activated control options are all available. User options also include manual or automated gas input controls which are sensitive to differential pressure changes as low as ±1.0 mm water gage pressure. DIGAMIX gas dilution systems are available as bench-top, portable or 19" rack mount units.
Low Boiling Point Liquids
Gas dilution mixtures may also be prepared with DIGAMIX® and DIMIKUR® from low boiling point liquids such as benzene, toluene, hexane, carbontetrachloride and others using the saturation-vapor pressure method.
Model 300/a-F
Tel: 914.741.5700 • Fax: 914.741.5711 • Toll Free: 1-888-779-2064
Email: sales@calibrated.com • 174 Brady Avenue, Hawthorne, NY 10532 USA
