Portaflow PT500
Portable Transit Time Flow Meter


PT500 Brochure
PT500 User's Guide
PT500 Engineering Specifications
Dow Corning Coupling Compound MSDS
Two Technologies
Doppler & Transit Time
More Information
How To Order
PT500 Order Form
Greyline Product List
What's New from Greyline

Please Note:
This model has been replaced by the new Greyline PTFM 1.0 Portable Transit Time Flow Meter.
Parts, service and tech support for the PT500 are available from Greyline.


  • Clamp-on Ultrasonic Sensors

  • Works on a Wide Range of Pipe Sizes

  • Internal Battery and/or AC Powered

  • Easy Calibration and Set-up

  • 98,000 point Data Logger

  • USB and RS232 Outputs

  • 4-20mA Output


PT500 Portable Ultrasonic Flow Meter

Recommended for clean fluids like water, glycol, oil and most chemicals. The Portaflow PT500 ultrasonic sensors clamp on the outside of vertical or horizontal pipes from 0.51" to 78" (13 to 2000 mm) outside diameter. The ultrasonic signal travels through all common metal and plastic pipe materials. Sensors can be mounted without shutting down flow and there is no obstruction or pressure drop. Flow rate and totalizer are displayed continuously along with battery status, signal strength. Press one key to instantly change the units of flow measurement (e.g. from gallons to liters). Real time flow can be displayed in large numeric values or as a graph.

Portaflow calibration is easy with the onscreen menu system. Enter the pipe diameter, wall thickness and pipe material, and the PT500 calculates the optimum mounting method and separation distance for the sensors. The PT500 includes two Sensor pairs: one set for small pipes and another for large pipe sizes.


Calibration parameters can be stored for up to twenty different sites so that operators can recall calibration setups from the Portaflow memory. Store readings with the built-in 98,000 point data logger. Logs can be displayed onscreen in text or graph formats and downloaded through USB and RS232 outputs.

The PT500 includes two sensor pairs, stainless steel guiderail and mounting clamps, sensor cables, coupling compound and AC charger with a rugged IP67 carry case. It operates up to 16 hours from internal batteries and recharges overnight.

Portaflow PT500 Installation

Watch this demonstration as we install and calibrate a Portable PT500 Transit Time Flow Meter for a potable water application.

The ultrasonic transducers are mounted on 10" PVC pipe. The Portaflow menu system calculates the transducer separation distance and mounting method. Once the transducers are clamped on to the outside of the pipe, the PT500 reads flow instantly.

Alternate Model...

Take a look at the new Portaflow PT400. It's a lower cost model with your choice of small or large pipe sensors and without a data logger.

Copyright 2009-2012 [Greyline Instruments Inc.] All rights reserved.
Information in this document is subject to change without notice.