Mass Flow Controllers & Meters

model

MWB–Low Pressure Drop Portable Gas Mass Flow Meters

Measure flow with minimal system impact, anywhere you need it

“Whisper” series portable flow meters with low pressure drop are the perfect calibration instruments for mass and volumetric flow rates. Low pressure drop minimizes system impact, enabling flow measurement at near-atmospheric pressures or when there is little available system pressure.

  • Accurate. Calibrate flows with NIST-traceable accuracy for a variety of gases down to 1/200th of full scale, or define your own gas composition with COMPOSER™.
  • Efficient. As soon as you power the MWB on, it’s ready to display live flow, pressure and temperature readings in your choice of engineering units.
  • Tough. MWB series portable flow meters are designed to be carried and can withstand drops if they should occur.

Performance

  • Available ranges: max 0-1000 slpm, min 0-0.5 sccm/0-500 sμlm (see Part Numbers tab for stock ranges)
  • Turndown ratio: 200:1
  • Standard accuracy calibration, NIST-traceable: +/- (0.8% of the reading + 0.2% of the full-scale range)
  • Optional high-accuracy calibration, NIST-traceable: +/- (0.4% of the reading + 0.2% of the full-scale range)
  • Repeatability: 0.2% of the full-scale range
  • Typical measurement response time constant: 5-10 ms
  • No warm-up time required

Operating Conditions

  • Compatible gases: 98 pre-loaded selectable gas calibrations; additional mixtures definable with COMPOSER
  • Operating temperature: -10°C to +60°C
  • Max internal pressure (static): 45 psig (60 psia)
  • Max differential pressure (inlet to outlet): 15 psid
  • Proof pressure: 175 psig (190 psia)
  • STP/NTP: user-selectable (defaults to 25°C & 1 atm STP/0°C & 1 atm NTP)

In the box

Model Variations 

  • Standard configuration, up to 160 psia (MB)
  • High pressure, 160-320 psia (MBQ)

Build Options

Performance Options

Alicat’s MWB series is suitable for use with non-corrosive gases.

MWB-0.5SCCM-D
MWB-1SCCM-D
MWB-2SCCM-D
MWB-5SCCM-D
MWB-10SCCM-D
MWB-20SCCM-D
MWB-50SCCM-D
MWB-100SCCM-D
MWB-200SCCM-D
MWB-500SCCM-D
MWB-1SLPM-D
MWB-2SLPM-D
MWB-5SLPM-D
MWB-10SLPM-D
MWB-20SLPM-D
MWB-40SLPM-D
MWB-50SLPM-D
MWB-100SLPM-D
MWB-250SLPM-D
MWB-500SLPM-D
MWB-1000SLPM-D

Calibration of an Air Sampling Canister

Rapidly calibrate across multiple ranges and gases without carrying a computer. NIST-traceable high-accuracy calibration makes your portable a transfer standard. Whisper-series low pressure drop enables non-intrusive volumetric flow calibration.

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