Malema Markets

Wherever safe, accurate, and repeatable flow control and measurement are required, you can find Malema solutions.

For over 40 years, Malema flow meters, flow controllers, flow switches, relief valves and pressure sensors have been utilized across various demanding applications. They offer high-purity performance in semiconductor production, safety in dangerous industrial environments and precision in hydrogen transportation applications.

Click on the markets below to learn which Malema flow control and measurement solutions can help you achieve your desired results.

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M-2700 INTEGRATED HIGH PURITY ULTRASONIC FLOW METER High Purity Ultrasonic Flow Meter with U- or Z-Shaped PFA Tube

The M-2700 series is an integrated ultrasonic flow meter in a small package. The M-2700 Flow Meter utilizes the latest high-speed digital signal processing (DSP) technology to provide a cost-effective flow measuring solution without compromising performance. Malema DSP algorithms sample the entire waveform, resulting in a demonstrable advantage in bubble immunity over traditional ultrasonic technologies. The ultrasonic flow meter is a U or Z-shaped PFA tube with no internal obstructions, moving parts, or mechanical seals. The M-2700 Ultrasonic Flow Meter is compatible with high-temperature liquids. It is an ideal choice where a minimal footprint, high purity, corrosion resistance, low-pressure drop, and easy installation are desired.

The M-2700 Ultrasonic Flow Meter utilizes transit-time ultrasonic technology to determine flow rate. Two piezoelectric transducers mounted at the ends of the measuring tube alternately transmit and receive ultrasound energy pulses. The difference between the pulses' upstream and downstream transit times is proportional to the fluid's velocity and is used to calculate the flow rate.

Features

  • Sensor and Electronics integrated in a compact easy-to-install package
  • No Dead Legs
  • No Obstructions, with minimal pressure drop
  • No Moving Parts in the flow path
  • All wetted parts made of PFA
  • Free from ion or particle contamination
  • Corrosion resistant
  • Wide rangeability
  • Fit for high temperature applications

Specifications

Performance Specifications

Measurable Fluid Liquids; Most semiconductor chemistry (acids, bases, solvents, and slurries)
Fluid Temperature 50° - 356°F (10° - 60°C)*
Fluid Pressure 0 - 70 psig
Ambient Temperature 32° - 115°F (0° - 46°C)
PFA Tube End Process Connection
Enclosure Classification IP64
End Connection Tube Size 1/4" (4mm) 1/4" (4mm) 1/4" (4mm) 1/4" (4mm)
Standard Full Scale Range** 3 lpm 4 lpm 8 lpm 20 lpm
Accuracy ± 1% of Flow Reading, down to 10% of Full Scale**
Repeatibility ± 0.5% of Flow Reading, down to 10% of Full Scale**
Flow Range 0.1 - 20 L/min

* Consult factory for higher temperature application
** Custom flow ranges available upon request. Consult factory for any other special requirements.

Electrical Specifications

Output Options Analog Output Current O/p
Active 4 to 20 mA (Max. Load < 900 ohms)
Passive 4 to 20 mA (Max. Load < 1200 ohms @ 30 V max.)
Voltage O/p 0 to 10 Vdc (min. impedance < 10 K)
Digital Output Open Collector / Max. 30 Vdc, 200 mA max.
Configurable for Low flow rate, High flow rate, Totalizer greater than,
Totalizer less than, Signal strength less, Positive totalizer pulse *
 
Digital Input Zeroing - Momentary pull-up to 24 Vdc for activiation
Power Supply 24 Vdc ± 10%
Power Consumption 100 mA (nominal)
Digital Communication MODBUS over RS-485

* Pulse frequency configurable up to 10 KHz; Pulse weight configurable from 0.01 ml

Material Specifications

Enclosure Classification IP64
Cable FEP Jacketed
Non-wetted Parts Polypropylene, PEEK, FEP
Wetted Parts High Purity PFA