1. Pneumatic Valves Hydraulics Pneumatics For Sale
  2. sku: 11996523305663853
  3. ALICAT SCIENTIFIC MW-20SLPM-D/5M

ALICAT SCIENTIFIC MW-20SLPM-D-5M Whisper Slpm 801234957753 MW-20SLPM-D/5M Flow Meter

Mw-20slpm-d Alicat Scientific Mw-20slpm-d/5m Whisper 20 Slpm Mass Flow Meter Best Offer

( Brand: Alicat Scientific ), ( Manufacturer Part Number: MW-20SLPM-D/5M ), ( Country Of Origin: United States ), ( UPC: 801234957753 )

Review ALICAT SCIENTIFIC Mw-20slpm-d/5m Whisper Slpm Mass Flow Meter Best Offer

The **Alicat Scientific MW-20SLPM-D/5M Whisper Series Mass Flow Meter** represents a pinnacle of precision engineering, meticulously designed for applications demanding uncompromising accuracy, reliability, and quiet operation in gas flow measurement. This compact yet robust instrument belongs to Alicat s acclaimed Whisper Series, renowned for its whisper-quiet performance achieving noise levels as low as **30 dB**, making it ideal for sensitive environments where acoustic interference could disrupt critical operations. Engineered to deliver **20 standard liters per minute (SLPM)** of flow capacity with an exceptional **0.5% full-scale accuracy**, the MW-20SLPM-D/5M excels in applications ranging from laboratory gas delivery and semiconductor manufacturing to medical device calibration and aerospace testing. Its **digital display** provides real-time, high-resolution readings with a **4-digit LED interface**, ensuring clarity and ease of use, while the **5-meter cable** offers flexibility for integration into existing systems without compromising signal integrity.

At the heart of this flow meter lies Alicat s proprietary **mass flow measurement technology**, which combines a **thermal dispersion principle** with advanced signal processing to deliver **instantaneous, dynamic flow readings** across a wide range of gases, including inert, reactive, and corrosive media. The device supports **automatic temperature and pressure compensation**, eliminating the need for external sensors and ensuring consistent performance even in varying environmental conditions. Its **digital communication interface** (via RS-232 or USB) enables seamless integration with data acquisition systems, PLCs, or lab automation software, facilitating automated logging, remote monitoring, and precise control in demanding workflows. The **durable stainless steel construction** and **wide operating temperature range (-20 C to 60 C)** further enhance its suitability for both controlled laboratory settings and rugged industrial applications.

One of the standout features of the MW-20SLPM-D/5M is its **low-pressure drop design**, which minimizes energy consumption while maintaining optimal flow performance. This efficiency is particularly advantageous in applications where minimizing backpressure is critical, such as in gas chromatography or vacuum systems. Additionally, the device s **self-diagnostic capabilities** and **user-friendly calibration tools** simplify maintenance and ensure long-term reliability, reducing downtime and operational costs. Whether deployed in a cleanroom environment, a research laboratory, or a manufacturing facility, this flow meter delivers a harmonious blend of **precision, quiet operation, and adaptability**, making it an indispensable tool for professionals who demand nothing less than excellence in gas flow measurement.

### **Pros and Cons of buying a Alicat Scientific MW-20SLPM-D/5M Whisper 20 SLPM Mass Flow Meter**

#### **Pros:**

1. **High Precision and Accuracy** Alicat mass flow meters are known for their high-precision measurements, typically offering accuracy within 1% of reading 0.5% of full scale (FS). This ensures reliable data for applications requiring exact flow control.

2. **Wide Range of Gases** The MW-20SLPM model supports a broad range of gases, including air, nitrogen, argon, helium, and more, with proper calibration. This versatility makes it suitable for various laboratory and industrial applications.

3. **Digital Communication and Integration** The meter includes built-in **RS-232, USB, and Modbus RTU** interfaces, allowing seamless integration with data loggers, PLCs, or lab software. This makes it ideal for automated systems.

4. **Low-Power "Whisper" Mode** The **Whisper mode** significantly reduces power consumption (as low as 100 mW), making it energy-efficient for battery-powered or long-term deployments.

5. **Compact and Rugged Design** The **5-meter cable** (D/5M variant) provides flexibility in installation, and the overall design is durable, suitable for laboratory and field use.

6. **No Moving Parts** Being a **thermal mass flow meter**, it has no mechanical components, reducing wear and tear and improving long-term reliability.

7. **User-Friendly Interface** The **LCD display** is easy to read, and the menu-driven interface allows for quick adjustments and diagnostics.

8. **Calibration and Adjustability** Alicat meters can be **user-calibrated** for specific gases, ensuring optimal performance for unique applications.

9. **Compatibility with Alicat Software** Alicat provides **free software tools** for configuration, data logging, and remote monitoring, enhancing usability.

10. **Good Customer Support and Warranty** Alicat Scientific offers **technical support and warranties**, which can be valuable for troubleshooting and replacements.

---

#### **Cons:**

1. **Higher Upfront Cost** Compared to some analog or mechanical flow meters, Alicat s digital mass flow meters are **more expensive**, which may be a barrier for budget-conscious buyers.

2. **Power Dependency** While Whisper mode reduces power use, the meter still requires an **external power source** (typically 12V DC), which may not be ideal for completely off-grid applications.

3. **Limited Physical Durability in Extreme Conditions** While rugged, the meter may not be suitable for **extreme temperatures, high humidity, or corrosive environments** without additional protection.

4. **Learning Curve for Advanced Features** Some advanced functionalities (e.g., Modbus programming, gas-specific calibration) may require **training or technical expertise** to fully utilize.

5. **Potential for Signal Noise in Low-Flow Applications** At very low flow rates, some users report **minor signal fluctuations**, though this is generally minimal with proper setup.

6. **Dependence on Gas Properties** Accuracy can vary slightly depending on the **gas type and temperature**, requiring occasional recalibration for optimal performance.

7. **No Built-In Pressure Compensation (Standard Model)** The **MW-20SLPM-D** does not include **pressure compensation** in its basic configuration, which may require additional sensors or adjustments in high-pressure applications.

8. **Limited Lifespan of Sensors** Like all thermal mass flow meters, **sensor degradation** over time is possible, though Alicat meters are designed for long-term use with proper maintenance.

---

### **Conclusion**

The **Alicat Scientific MW-20SLPM-D/5M Whisper 20 SLPM Mass Flow Meter** is a **highly capable, precise, and versatile** instrument ideal for **laboratory, research, and industrial applications** where accurate flow measurement is critical. Its **digital communication, low power consumption, and wide gas compatibility** make it a strong choice for automated systems. However, its **higher cost, power dependency, and need for occasional calibration** may be drawbacks for some users.

### **Recommendation**

**Buy this flow meter if:**

- You need **high-precision mass flow measurement** for gases in a lab or industrial setting.

- You require **digital integration** with PLCs, data loggers, or software.

- You operate in **moderate environmental conditions** and can accommodate its power requirements.

- You value **long-term reliability and low maintenance** due to its lack of moving parts.

**Consider alternatives if:**

- You have a **tight budget** and can find a similarly accurate but lower-cost option.

- Your application involves **extreme temperatures, high humidity, or corrosive gases**, requiring additional protection.

- You need **pressure-compensated flow measurement** without extra sensors.

- You prefer **mechanical or analog flow meters** for simplicity and lower cost.

**Final Verdict:** For most **precision flow measurement applications**, the Alicat MW-20SLPM-D/5M is an **excellent investment** due to its reliability, accuracy, and advanced features. Ensure proper calibration and environmental considerations to maximize its performance.

Details:

There are light scratches present across the surfaces. Brand: Alicat Scientific model: Whisper 20 SLPM Flow Meter model Number/MPN: MW-20SLPM-D/5M Rate: Gas Type: CH4, TOT Calibration Date: 7/30/14 Country of Manufacture: USA Power Supply: Not Included Functional Testing: Untested, but retrieved from a laboratory in which the unit was functioning, The shows minor scuffs and wear marks on metallic housing black display. This Alicat Scientific mass flow controller accurately measures and controls gas rates, featuring a digital display robust construction for laboratory industrial applications.

part #: mw20slpmd5m prices

  • $550.00-$4000.00

specifications pneumativalv:

  • brand: Alicat Scientific
  • mpn: Mw-20slpm-d/5m
  • country of origin: United States
  • upc: 801234957753

seller pneumativalv:

  • # reviews: 2015
  • city: Fairfield, California
  • rating: 99.9%

shipping pneumativalv:

  • cost: $0.00
  • type: Fixed
  • class: Standard, Expedited
  • service: UPS Ground, Expedited
  • carrier: UPS
  • transit: 3-7 Days

returns pneumativalv:

  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted
  • method: Money back

offer pneumativalv:

  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • started: March 23, 2026
  • availability: In Stock

payments pneumativalv:

  • wallet: Apple-pay
  • credit card: Discover
  • other

general pneumativalv:

  • Pump Flow Controllers > Flow Controllers Meters > Mass Flow Controllers
  • condition: Used
country of origin: united states,
category: business & industrial > pump flow controllers > flow controllers meters > mass flow controllers, sku: 11996523305663853,
Alicat Scientific MW-20SLPM-D-5M Is Similar To:
pneumativalv logo
3 offers $550.00–$4000.00 USD
  • New – Open box. Offer #1 priced at $550.00 + $0.00 shipping estimate = $550.00* total. FREE SHIPPING
  • Used. Offer #2 priced at $4000.00 + $0.00 shipping estimate = $4000.00* total. FREE SHIPPING
  • Used. Offer #3 priced at $1141.64 + $13.43 shipping estimate = $1155.07* total. +$13.43 shipping

Copyright © pneumativalv.com