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Flow Meters

Both DDU and APSD data can be severely compromised if the inlet flow rate (the flow rate at the entrance to the induction port or DUSA) used during testing is inaccurate and/or inconsistent, generating discrepancies with regard to its effects on both the cascade impactor itself and the inhaler under test.

Copley offers Flow Meters with the required range and accuracy to measure the flow in inhaler testing systems.

DFM 2000

DFM4

DFM 2000

DFM4

DFM4 – Flow Meter

Operating on the Differential Pressure (Venturi) principle, the Flow Meter Model DFM4 has a range of 105 L/min, a resolution of 0.1 L/min and an accuracy of +/- 2% or 0.7 L/min, whichever the greater. Its robust design and method of operation means that an inlet filter is not required in routine use. A calibration kit is also available for routine calibration by the user.

Product Features
Operation Principle	Venturi (Pressure Drop)
Flow Rate Range	10-105 L/min
Resolution	0.1 L/min
Accuracy	+/- 2% or 0.7 L/min (whichever the greater)
Flow Resistance	Low (1.0 kPa @ 100 L/min)
Volumetric Flow Calculation	Direct measurement
Inlet Filter	Not required
Connectivity	Interface to external devices such as the BAC 100i and TPK 100i
Reporting	RS-232 (Flow Rate & Calibrate Data)
Calibration	Calibration kit available for user calibration
Use ‘in-line’	Cannot be used ‘in-line’
Power Source	Universal mains input voltage