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Alicat Scientific
Alicat Scientific Whisper MW Series Mass Flow Meter
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Alicat Whisper MW: low-ΔP mass flow; 0.5 SCCM–1,000 SLPM; 10,000:1; 11.5–60 PSIA. RFQ.
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RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
Standard ±0.75% of reading or ±0.1% FS (whichever greater); high accuracy ±0.6% rdg or ±0.1% FS
Wetted parts
Stainless steels with Whisper-compatible elastomers/ceramics per DOC-SPECS-MW
Display
Monochrome LCD or color TFT; mass flow, volumetric flow, temperature, pressure
Flow Range
Series 0.5 SCCM–1,000 SLPM; mid-flow sheet 10 SCCM–100 SLPM full scale
Repeatability
±(0.1% of reading + 0.02% of full scale) (2σ)
Turndown
0.01–100% of full scale (10,000:1)
Fits low pressure-drop gas metering where you need an Alicat Scientific Whisper MW Series. Low-ΔP mass flow meters spanning about 0.5 SCCM to 1,000 SLPM full scale, standard accuracy ±0.75% of reading or ±0.1% FS (whichever greater), 10,000:1 turndown, and operating pressure 11.5–60 PSIA in the Whisper low-ΔP design.
Key advantages
- Design — Whisper low-ΔP
- Range — ~0.5 SCCM to 1,000 SLPM FS
- Accuracy — ±0.75% rdg or ±0.1% FS (std)
- Turndown — 10,000:1
- Pressure — 11.5–60 PSIA
Typical applications
- Low-ΔP gas metering.
- Sensitive process lines.
- Lab Whisper meters.
Selection guide
- Full scale
- Gas
- Comms
Common mistakes
- Pressure above 60 PSIA.
- Wrong FS.
- Unstated gas.
When to RFQ / what to tell us
- FS/gas/comms.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 48575 |
| Brand | Alicat Scientific |
| Model | Whisper MW Series |
| Product type | Mass Flow Meter |
| Flow range | Series 0.5 SCCM–1,000 SLPM; mid-flow sheet 10 SCCM–100 SLPM full scale |
| Accuracy | Standard ±0.75% of reading or ±0.1% FS (whichever greater); high accuracy ±0.6% rdg or ±0.1% FS |
| Repeatability | ±(0.1% of reading + 0.02% of full scale) (2σ) |
| Turndown | 0.01–100% of full scale (10,000:1) |
| Operating pressure | 11.5–60 PSIA (Whisper low-ΔP design) |
Documents
FAQ
Q: Pressure band? A: 11.5–60 PSIA.
Q: Turndown? A: 10,000:1.
Q: What should I send for a quote? A: FS/gas/comms, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | Standard ±0.75% of reading or ±0.1% FS (whichever greater); high accuracy ±0.6% rdg or ±0.1% FS |
| Wetted parts | Stainless steels with Whisper-compatible elastomers/ceramics per DOC-SPECS-MW |
| Display | Monochrome LCD or color TFT; mass flow, volumetric flow, temperature, pressure |
| Flow Range | Series 0.5 SCCM–1,000 SLPM; mid-flow sheet 10 SCCM–100 SLPM full scale |
| Repeatability | ±(0.1% of reading + 0.02% of full scale) (2σ) |
| Turndown | 0.01–100% of full scale (10,000:1) |
| Operating Pressure | 11.5–60 PSIA (Whisper low-ΔP design) |
| Operating Temperature | −10–60 °C |
| Pressure Accuracy | Above 1 atm ±0.75% of reading; below 1 atm ±0.1 PSIA |
| Sensor Response Time | <1 ms |
| Ingress Protection | IP40 |
| Communications | RS-232/Modbus RTU default; optional industrial protocols |
| Analog Io | 4–20 mA, 0–5 Vdc, 1–5 Vdc, 0–10 Vdc |
| Gas Select | 98 user-selectable gases; STP/NTP configurable |
| Max Common Mode Pressure | Damage possible above ~80 PSIA common mode / 10 PSI differential (Whisper class) |