Alicat MWB Whisper Series portable mass flow meters allows you to monitor your gas flow rate with minimum pressure drop in your process. Full scale flow rates are backed up by as little as 5 mbar pressure drop. All day flow measurement is achievable with up to 18 hours battery life via the USB chargeable battery pack.
Every MWB series comes preloaded with 98+ gases and gas mixtures, you can even add your own gas blends! The portable mass flow meter is repeatable and accurate with calibrations up to ±0.6% of reading accuracy.
Every device has a 10,000:1 turndown ratio with flow scale flow rates starting from 0.5 SCCM up to 1000 SLPM.
Backlit LCD display comes as standard, as well as RS-232 communications via the USB type B connection.
Every Alicat device is backed by the manufactures limited life time warranty and ships with a NIST traceable calibration certificate.
MWB series portable flow meters have a full scale pressure of 60 PSIG and can be fitted with a flow totaliser
The data in the table below are standard configurations for models 10 sccm full scale through 100 slpm full scale. Please refer to the Mid-flow data sheet for full details.
|Mass Flow Accuracy at Calibration Conditions1
|±0.75% of reading or ±0.1% of full scale, whichever is greater
|High Accuracy Option1
|±0.6% of reading or ±0.1% of full scale, whichever is greater
|No additional uncertainties
|±(0.1% of reading + 0.02% of full scale)
|Flow Measurement Range
|0.01–100% of full scale
|Mass flow zero shift: ±0.03% of full scale per °C from tare temperature
Mass flow span shift: ±0.01% of reading per °C from 25°C
|Mass flow zero shift: ±0.01% of full scale per ATM from tare pressure
Mass flow span shift: ±0.1% of reading per atmosphere from calibration conditions
|Operating Temperature Range
|−10–60°C (expanded range available)
|Operating Pressure Full Scale
|60 PSIA (additional options available)/td>
1 - Stated accuracy is after tare under equilibrium conditions. Extreme gas behavior (especially near state boundaries) can introduce additional flow uncertainties.
Common process applications and industrial uses include:
Alicat mass flow meters are incredibly durable; please be sure to watch this 'roof drop' video supplied by Alicat which tests how tough the flow meter really is:
We provide a certified annual recalibration service on all Alicat mass flow meters and mass flow controllers. Further details on our recalibration service.
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