Testo 6440 Series Compressed Air Flow Meters

Measures compressed air flow to aid in the determination of leakage, consumption and the implementation of peak load management.

Testo 6444 Compressed Air Flow Meters
Testo 6441 Compressed Air Flow Meter

Retired products cannot be ordered

The Testo 6450 Series Compressed Air Flow Meter is the suggested replacement

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Manufactured

By Testo

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Product Specs

Features

For the measurement of compressed air
Available in four sizes from 1/2” to 2” with flow ranges from 0.25-75 m3/h to 2.3-700 m3/h
Accuracy: up to ±3% of measured value, ±0.3% of final value
Selectable units: m3/h; l/min; m3
Thermal, glass-coated ceramic sensor (calorimetric measurement procedure)
Temperature range: 32 to 140 °F
Outputs
- 4 to 20 mA (4-wire) analog output
- Pulse output
- 2 switch outputs, parameterizable
Supply voltage: 19 to 30 V DC
4-digit alphanumerical display with two operating buttons, operating menu, and LEDs
Process pressure: PN 16 (max 16bar/232psi)

The Testo 6440 series of compressed air flow meters is designed to monitor, measure and record compressed air consumption to aid in the determination of leakage, consumption-based allocation of costs and the implementation of peak load management. The 6440 series utilizes the calorimetric principle so that the measurement procedure is independent of the process pressure and does not cause a permanent pressure drop. While the thermal, glass-coated ceramic sensor offers a high level of robustness and fast response times, the integrated inflow and outflow pipes ensure optimum accuracy.

The Testo 6440 series of compressed air flow meters is available in four sizes. The 6441 is for 1/2 inch lines and has a range from 0.25 to 75 m3/h. The 6442 is for 1 inch lines and has a range from 0.75 to 225 m3/h. The 6443 is for 1-1/2 inch lines and has a range from 1.3 to 410 m3/h. The 6444 is for 2 inch lines and has a range from 2.3 to 700 m3/h. All sizes have a basic accuracy of ±3% of measured value.

The Testo 6440 series includes a 4-digit alphanumerical display with two operating buttons, operating menu, and LEDs. Additionally, all units include a 4 to 20 mA (4-wire) analog output, pulse output, and 2 switch outputs (parameterizable).