Ultrasonic Liquid Flow Meter & Switch PF/UF/PDFM Series

►Features
It measures both clear water and cloudy liquids accurately!
It can make measurement quickly and accurately from the outside of a pipe. It can be attached directly to the existing pipe regardless of materials (metal pipe, resin pipe, lining pipe, etc.). The settings can be made easily according to instructions. The instantaneous flow rate, flow velocity, and integral flow rate can be confirmed on the display.

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►Operating Principles

Ultrasonic waves are transmitted into a liquid alternately from the 2 sensors attached to the outside of the pipe, and difference between the propagation time of the ultrasonic wave in the upstream direction and the propagation time in the downstream direction is detected to obtain the flow velocity. Then, the flow rate is calculated by multiplying the cross section area of the pipe diameter.

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►Standard Specification

Specification／Model		PF330	PF220
Power Source		AC110～240V　±10% 　Battery Life-20 hours from fully 　charged, depending on load.	AC110～240V　±10% 　Battery Life-20 hours from fully 　charged, depending on load.
Allowable Temperature		Operation：-20℃～+50℃ 　Keeping：-25℃～+65℃	Operation：-20℃～+50℃ 　Keeping：-25℃～+65℃
Pipes		13 OD to 2000mm OD 　1500 OD to 5000mm OD（option）	13 OD to 115mm OD（PF220A）　50 OD to 1000mm OD（PF220B)
Flow Range		0.1m/sec to 20m/sec 　bi-directional	0.1m/sec to 20m/sec 　bi-directional
Temperature Range		-20℃～+135℃、　200℃（Optional）	-20℃～+135℃
Display	Flow Velocity	m/sec、f/sec	m/sec、f/sec
Display	Volumetric Flow	㎥、Gullons、US Gullons、　ℓ、Barrel	㎥、Gullons、US Gullons、　ℓ、Barrel
Output		0～20mA/4～20mA　0.1%FS 　One Pulse/sec MAX 　USB/RS232C	0～20mA/4～20mA　0.1%FS 　One Pulse/sec MAX
Accuracy		13mm～75mm±3% 　（0.2m/sec over）　75mm ±0.5%～2% 　（0.2m/sec over）	13mm～75mm±3% 　（0.2m/sec over）　75mm ±0.5%～2% 　（0.2m/sec over）