
FP-4400 PORTABLE CLAMP-ON ULTRASONIC FLOW METER
ONICON Incorporated 727.447.6140
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onicon.com
SECTION 1.0 GENERAL INFORMATION
ONICON Incorporated would like to thank you for purchasing our FP-4400 Portable Clamp-on Ultrasonic Flow Meter.
As our valued customer, our commitment to you is to provide fast reliable service, while continuing to offer quality
products to meet your growing flow measurement needs.
1.1 PRINCIPLE OF OPERATION
The ONICON FP-4400 Portable Clamp-on Ultrasonic Flow Meter utilizes the differential transit time method to
measure the velocity of relatively clean liquids in full pipes. By measuring the difference between transit times of
ultrasonic sound waves traveling between two transducers, the flow velocity and direction are accurately determined.
1.2 TYPICAL FP-4400 FLOW METER INSTALLATION
The FP-4400 Portable Clamp-on Ultrasonic Flow Meter utilizes clamp-on signal transducers that mount on the outside
wall of the pipe. It is suitable for measuring the volumetric flow of liquids in a wide variety of applications including
bi-directional flow applications. The meter is housed in an aluminum enclosure with silicone protective end covers.
When connected to the transducer cables it provides NEMA 4X (IP67) protection from the environment.
1.
Aluminum NEMA4X (IP67) enclosure with silicone protective end covers.
2.
Backlit LCD display with menu driven via five (5) programming keys.
3. Pair of 12 ft triaxial transducer cables. Each cable is provided with an IP67 plug on one end for connecting to the meter
and a BNC plug on the other end for connecting to the transducer.
4.
Mounting hardware: includes mounting brackets, mounting strap kit and an alignment and spacer tool for each
transducer type. (Drawing above shown with Series 20 transducers and mounting hardware.)
5.
Vertical pipe mounting shown. You must have a full pipe and sufficient back pressure when measuring downward flow.
6.
For horizontal pipes, avoid mounting transducers on the top or bottom of the pipe. The best placement on a horizontal
pipe is either the 2:00 to 4:00 or 8:00 to 10:00 positions for two (2) cross (Reflect) or four (4) cross (Double Reflect) mode,
or one sensor at 9:00 and one sensor at 3:00 for one (1) cross mode (Direct)
FLOW
OK
OK
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