Products » Gas Flow » Mass Flow Meter » Whisper Low Pressure Drop Mass Flow Meters

Whisper™ MW Series Meters

Low Pressure Drop Mass Flow Meters with Laminar Differential Pressure Technology

Low pressure drop mass flow meter - Whisper MW Series from Alicat Scientific

Low pressure drop mass flow meters are ideal for systems with limited source pressure. Whisper instruments create minimal pressure drop (as low as 0.07 PSID).

98 standard pre-loaded gas choices — switch easily, without losing accuracy
Measures mass flow, volumetric flow, temperature, and pressure
Instant warm-up (<1 second)
0.01 – 100% measurement range (10,000:1 turndown)
Laminar DP (differential pressure) mass flow measurement technology
Limited Lifetime Warranty

Operating manuals, brochures, software, and utilities →

Full Scale Flow Ranges

0.5 SCCM – 1,000 SLPM

OPERATING PRESSURE RANGE

11.5 – 60 PSIA

Request a Quote

Ask an Engineer

Looking for a mass flow controller instead?

Alicat Low Pressure Drop Mass Flow Meter

MW Series Meter

For most low pressure flow measurement

most versatile

0.5 SCCM – 1,000 SLPM options
60 PSIA max operating pressure
± 0.6% of reading accuracy
± (0.1% of reading + 0.02% of full scale) repeatability

Spec Sheets

Portable Alicat Whisper Mass Flow Meter with Low Pressure Drop

MWB Series Meter

Battery powered for portability

For metering anywhere

98 pre-loaded gas calibrations
0.5 SCCM – 1,000 SLPM options
60 PSIA max operating pressure
± 0.6% of reading accuracy
Battery life up to 14 hours
Optional Bluetooth^®
See our other portable mass flow meters

Spec Sheets



Available Variants

M Series Meter

Laminar Differential Pressure Meters

MB Portable Mass Flow Meters

Battery powered to measure wherever you need to

IS-Max Intrinsically Safe Mass Flow Meters

Laminar DP meters for explosive atmospheres

Build Options

Communication Protocols

RS-232 Serial (default)
RS-485 Serial
Analog (4-20 mA, 0-10 Vdc, 0-5 Vdc, or 1-5 Vdc)
Modbus RTU (over RS-232 or RS-485)
Modbus TCP/IP
DeviceNet
EtherCAT
EtherNet/IP
PROFIBUS
PROFINET
IO-Link

Displays

Backlit monochrome (default) or TFT color; integrated or panel-mount; none

Process Connections

10-32, NPT, SAE, BSPP, VCRM, VCO, Compression

Ingress Protection

IP40 (default); IP66, IP67

Hazardous Environment Ratings

For explosive environments, see IS-Max Series Flow Meters

Humid Gases

Relative humidity compensation

FastTrack Ordering

Mass flow instruments that ship in just 3-5 business days.

CALIBRATION

Standard or High Accuracy

DISPLAY

Monochrome, Color, or None

PROTOCOL

Analog, RS-232, RS-485, Modbus RTU, or PROFIBUS

CONNECTOR

MD8, Locking Industrial, DB9M, DB15

FITTINGS

NPT

METER RANGES

2 SCCM - 500 SLPM

CONTROLLER RANGES

2 SCCM - 100 SLPM

Order Instruments

Ready for the final details?

Each product is made-to-order.  Alicat’s Applications Engineers are ready to provide expertise and discuss custom options, ensuring the best fit for your needs.

Ask an Engineer