Alicat Whisper™ MW-Series Mass Flowmeters with Digital Display, SLPM

Provides accurate real-time mass and volumetric flow readings with minimal pressure drop
  • Instant warm-up
  • Ninety-eight pre-loaded gas calibrations
  • One-hundred millisecond control response
  • IP40 rating
These low-pressure drop mass flowmeters utilize laminar differential pressure technology to deliver precise mass flow measurements for over 130 different gases. With a rapid control response time of just 100 milliseconds, they integrate easily into test stands, enabling immediate and accurate verification without the need for warm-up.

Designed to minimize pressure drop—as low as 0.07 psid—these flowmeters are ideal for applications with limited source pressure. Each unit comes pre-loaded with 98 standard gas calibrations that can be easily switched without compromising accuracy.

These stand-alone devices measure mass flow, volumetric flow, temperature, and absolute pressure, with readings shown in standard liters per minute (SLPM). Additional features include a backlit monochrome LCD display, a data I/O port for seamless data logging to a computer, and versatile mounting options—even allowing for upside-down installation.
$1,740.00 - $6,110.00USD / Each

11 variations of this product are available.

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Accuracy Max Flow Rate (LPM) Repeatability
Availability Pricing
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 1 SLPM EW-67802-58 Mfr # MW-1SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 1 ±0.1% of reading ±0.02% of full scale
$1,740.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 2 SLPM EW-67802-59 Mfr # MW-2SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 2 ±0.1% of reading ±0.02% of full scale
$1,740.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 5 SLPM EW-67802-60 Mfr # MW-5SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 5 ±0.1% of reading ±0.02% of full scale
$1,740.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 10 SLPM EW-67802-61 Mfr # MW-10SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 10 ±0.1% of reading ±0.02% of full scale
$1,740.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 20 SLPM EW-67802-62 Mfr # MW-20SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 20 ±0.1% of reading ±0.02% of full scale
$1,740.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 40 SLPM EW-67802-63 Mfr # MW-40SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 40 ±0.1% of reading ±0.02% of full scale
$2,845.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 50 SLPM EW-67802-64 Mfr # MW-50SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 50 ±0.1% of reading ±0.02% of full scale
$2,400.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0 - 100 SLPM EW-67802-65 Mfr # MW-100SLPM-D
COMPARE
±0.75% of reading ±0.1% of full scale 100 ±0.1% of reading ±0.02% of full scale
$2,800.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0-250 SLPM EW-67802-66 Mfr # MW-250SLPM-D
COMPARE
±0.8% of reading ±0.2% of full scale 250 ±0.2% of reading ±0.02% of full scale
$3,820.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0-500 SLPM EW-67802-67 Mfr # MW-500SLPM-D
COMPARE
±0.8% of reading ±0.2% of full scale 500 ±0.2% of reading ±0.02% of full scale
$4,025.00USD / Each
Alicat Whisper™ Low-Pressure Drop Mass Flowmeter, 0-1000 SLPM EW-67802-68 Mfr # MW-1000SLPM-D
COMPARE
±0.8% of reading ±0.2% of full scale 1000 ±0.2% of reading ±0.02% of full scale
$6,110.00USD / Each
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