
Overview
Whisper™ MW series meters
Low pressure drop mass flow meters with laminar differential pressure technology
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 preloaded gas options – switch easily without compromising accuracy
- Measures mass flow, volumetric flow, temperature and pressure
- Instant warm-up (<1 second)
- Measurement range 0.01–100% (10,000:1 turndown)
- Laminar DP (differential pressure) mass flow measurement technology

Alicat Whisper MWB Series Portable Battery-Powered Mass Flow Meters
- Portable battery-powered unit
- 98 preloaded gas calibrations
- 0.5 SCCM – 1,000 SLPM options
- 60 PSIA maximum operating pressure
- ± 0.6% of reading accuracy
- Up to 14 hours battery life
- Optional Bluetooth®
Technical specifications
| Parameter | |
|---|
| Mass flow accuracy | ± 0.8% of reading and ± 0.2% of full scale |
| Flow repeatability (2σ) | ± (0.2% of reading + 0.02% of full scale) |
| Pressure accuracy | Available for models ≥ 5 SCCM |
| Flow measurement range | 0.01–100% of full scale |
| Operating pressure | 11.5–60 PSIA |
| Pressure sensitivity | Mass flow zero and span shift: ± (0.08% of reading + 0.02% of full scale) per atm from tare pressure |
| Temperature sensitivity | Mass flow zero and span shift: 0.03% of full scale per °C from 25 °C |
| Temperature accuracy | ± 0.75 °C |
| Operating temperature range | -10…60 °C |
| Total volumetric uncertainty | ± 0.5% of reading (additional uncertainty) |
| Sensor response time | < 1 ms |
| Typical indicator response time | 127 ms (user adjustable) |
| Typical warm-up time | < 1 s |
For detailed information on all flow meter models, contact our laboratory installation consultants.
Datasheets (Alicat):
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
190,031.93 TL
570,095.78 TL
95,942.95 TL
575,657.69 TL
64,579.96 TL
581,219.60 TL
556,191.00 TL
556,191.00 TL
556,191.00 TL
556,191.00 TL