MASS FLOW METER AND REGULATORS

Alicat Mass Flow Meters and Regulators

I mass flow meter e Alicat regulators Mass flow meters are indispensable precision instruments for measuring and controlling gas flow in numerous industrial and laboratory applications. Unlike traditional volumetric meters, mass flow meters They directly measure the mass of the gas passing through the sensor, ensuring accuracy, stability and independence from temperature and pressure variations.

Comhas offers a complete range of mass flow meter e mass flow controller of the best international manufacturers, including Alicat Scientific, a world-leading brand in the sector.
As an official Alicat Scientific distributor, Comhas offers flow measurement and control instruments characterized by high precision, fast response times and wide compatibility with technical, specialty and custom gas mixtures.

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The instruments Alicat They stand out for their advanced differential pressure technology.

Up to 130 different gases can be selected directly from the display or via digital interface. Versions with analog and digital outputs (RS-232, Modbus, Profibus, EtherCAT) and NIST-certified calibration options are available, ideal for industrial, scientific, and research applications.

Main features and benefits

Direct mass flow measurement
High rangeability
Fast response times (<10 ms) and long-term stability
Single or multi-gas versions with menu selection
Integrated regulators (Mass Flow Controller) for automatic flow control
Wide choice of interfaces and communication protocols
Traceable certifications and calibrations according to international standards

Typical applications

I Alicat mass flow meters and regulators they are used in:

Gas production and mixing plants
Environmental research and testing laboratories
Process analysis and instrumentation systems
Pharmaceutical, food and biomedical applications
Control of automated industrial processes

I would choose Alicat mass flow meters and regulators Distributing by Comhas means relying on reliable, precise, and certified instruments, supported by a specialized technical team and the many years of experience of an official Alicat Scientific distributor.

Thermal Mass Flow Meters and Controllers – BASIS MEMS

Full scale flow range from 100 SCCM to 20 LPM
The smallest controller of Alicat mass flow rate
Control accurate of the flow rate in a metal body compact e resistant

Mass Flow Meters and Controllers for HYDROGEN – M- and MC- Series

Custom valve sizing maximizes performance for H2
Easy monitoring
Fast and constant control

MC – Alicat mass flow regulator

Available ranges: max 0-5000 slpm, min 0-0.5 sccm/0-500 sμlm
Adjustment range: 0.01% – 100% FS
Accuracy Standard, NIST traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.1% VL + 0.02% FS
Regulation response time (typical): 50-100 ms (up to 25 ms with PID tuning)
No preheating time required

M – Mass flow meters for air or gas, Alicat

Available ranges: max 0-5000 slpm, min 0-0.5 sccm/0-500 sμlm
Rangeability: 0.01% – 100% FS
Accuracy Standard, NIST traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.2% FS
Response time (typical): 5-10 ms
No preheating time required

MB – Alicat portable mass flow meter, for air and gas

Available ranges: max 0-5000 slpm, min 0-0.5 sccm/0-500 sμlm
Rangeability: 0.01% – 100% FS
Accuracy Standard, NIST traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.2% FS
Typical response time (measurement): 5-10 ms
No preheating time required

PCU – Portable Calibration Unit

Available fields:
– 3 meters of your choice with a range up to 500 slpm (PCU and PCUS) or 250 slpm (PCUW)
– All meters also include the Totalizer option
Rangeability: up to 1,000,000:1 (sum of 3 instruments)
High accuracy traceable to NIST (standard on PCU): +/- (0.6% VL) for intermediate flow rates
Repeatability: 0.2% FS
Typical response time (measured): 5-10 ms
No preheating required

MQ – Alicat air or gas mass flow meter for high pressures

– I specify

– High rangeability

– Digital and analog communication

-Available with Ethernet/IP, EtherCAT, DeviceNet, Profibus or Modbus (RTU and TCP/IP) communication

MS – Alicat mass flow meters for aggressive fluids

Measurement of aggressive fluids (gases)
Flow rate up to 5000 SLPM
Standard accuracy: +/- 0,8% VL + 0,2% fs
High response speed (5-10ms typical)
No warm up required
High rangeability

MW WHISPER – ALICAT mass flow meter, for air with low pressure drop

Available ranges: max 0-1000 slpm, min 0-0.5 sccm/0-500 sμlm
Rangeability: 0.01% – 100% FS
Standard Accuracy, NIST Traceable: +/- (0.8% VL + 0,2% FS )
Optional high precision calibration, NIST traceable: +/- (0.4% VL + 0,2% FS)
Repeatability: +/- 0.2% FS
Response time (typical): 5-10 ms
No preheating time required

MCQ/MCRQ – Alicat mass flow regulator, for high pressures

Available ranges: max 0-5000 slpm, min 0-10 sccm
Adjustment range: 0.01% – 100% FS
Accuracy Standard, NIST traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.1% VL + 0.02% FS
Regulation response time (typical): 50-100 ms (up to 25 ms with PID tuning)
No preheating time required

MCV – Mass flow regulator for vacuum, Alicat

Available fields : max 0-20 slpm, min 0-0.5 sccm/0-500 sμlm
Adjustment range: 0.01% – 100% FS
Standard Accuracy, NIST Traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.1% VL + 0.02% FS
Response time (typical) : 50-100 ms (up to 25 ms with PID tuning)
Valve pneumatic leak integrity (MCV only): 1 x 10^-9 atm scc/sec max with Helium
No preheating time required

MCD/MCRD – Alicat bidirectional mass regulator, for air or gas

Measuring ranges: -5000 to +5000 slpm, min -0.5 to +0.5 sccm/-500 sμlm to +500 sμlm
Adjustment range: 0.01% – 100% FS
Accuracy Standard, NIST traceable: +/- (0.6% VL on most models)
Optional high precision calibration, NIST traceable: +/- (0.5% VL on most models)
Repeatability: +/- 0.1% VL + 0.02% FS
Response time (typical): 50-100 ms (up to 25 ms with PID tuning)
No preheating time required

MCS – Alicat mass flow regulator for corrosive applications

Measuring ranges: max 0-5000 slpm, min 0-0.5 sccm/0-500 sμlm
Adjustment range: 0.01% – 100% FS
Standard Accuracy, NIST Traceable: +/- (0.8% VL +0,2% FS)
Optional high precision calibration, NIST traceable: +/- (0.4% VL + 0,2% FS)
Repeatability: +/- 0.2% FS
Response time (typical) in regulation: 0.5 SCCM–5 SCCM: 100–4000 ms 10 SCCM–20 SLPM: 30–4000 ms 50 SLPM–5000 SLPM: 30–150 ms
No preheating time required

MCW – Alicat Low Pressure Drop Mass Flow Regulators

Available ranges: max 0-1000 slpm, min 0-0.5 sccm/0-500 sμlm
Adjustment range: 0.01% – 100% FS
Standard Accuracy, NIST Traceable: +/- (0.8% VL + 0,2% FS )
Optional high precision calibration, NIST traceable: +/- (0.4% VL + 0,2% FS)
Repeatability: +/- 0.2% FS
Regulation response time (typical): 50-100 ms (up to 25 ms with PID tuning)
No preheating time required

BIO – Alicat® Mass Flow Meters / Controllers for Biotechnological Processes

Long-term stability due to extremely low zero drift.
Resistance to process water contamination.
ASME Compliant Materials. 316L Stainless Steel and FDA Class VI USP Certified Elastomers
Integrated display for local process monitoring.
Optional IP66 protection

VA 520 – Economical meters for compressed air and gas

• Compressor balancing, and consumption
• Check for leaks
• Portable measurement for quick verification of individual utilities
• Gas process measurements
• Nitrogen generator measurements

VA 570 – Inline flow meter for air or gas

• Robust, with IP 67 die-cast aluminum housing
• Wetted parts in stainless steel 1.4571
• Versions from 1/2″ up to 2″
• Upon request in ATEX II2 G Ex d IIC T4 execution
• On request with DVGW approval for natural gas
• Max pressure 50 bar – optional up to 100 bar
• Temperature range up to 180° C, optional up to 350° C
• No moving parts
• Robust sensors, easy to clean
• Rotatable case, 180° rotatable display
• Scale engraved on the probe for accurate insertion during

FT3 – Industrial Mass Flow Meter for Air and Gas

• Mass flow meters for air or gas in-line or insertion versions
• Atex and IECEX executions

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