Welcome to PendoTECH Flow Meter Page

PendoTECH Coriolis Flow Meter

• Response is independent of fluid properties including viscosity
• Mass flow pre-calibration eliminates need to calibrate on different fluids
• Accuracy unaffected by flow regime (e.g., laminar or
turbulent flow)
• All plastic flow path that meets USP Class VI

Description

The PCFM Series is a family of advanced flow meters based
on the Coriolis measurement principle. The flow meters are comprised of two assemblies: one containing the sensor,
the other containing the supporting electronics. The PCFM sensors are specially designed for measuring liquids in high-purity applications such as bio-pharmaceutical production and process development.

The measurement is made as fluid flows into the sensor consisting of two flow sensitive elements which are
vibrated relative to one another - similar to a tuning fork. Fluid interacts with the sensor dynamically
in such a way that the sensor’s response is immune to
the fluid’s chemical and physical properties flow regime,
or variations in flow velocity profile. Fluid mass flow rate
is determined by measuring the relative motion and frequency of the flow-sensitive elements.

Single Use Replacable Fluid Path Planned for Q4-2011!

Disposable Rotary Flow Sensors and Flow Meters

The Disposable Rotary Flow Meters offered by PendoTECH and produced and manufactured by Equiflow BV can conveniently measure flow in your process both accurately and cost effectively. They are the perfect alternative low-cost solution for use with tubing and bioprocess containers to the existing re-usable rotary flow meters on the market. They are perfect for filtration processes, chromatography and more. Even though they are called single use, they are also suitable for repeat or long-term use. They are available in a variety of sizes and different materials to insure process compatibility and scalability. The tubing slides over the hose barb on the rotor and may be affixed with a cable tie or a more secure method. The reusable flow sensor electronics connect to a flow monitor by a 3 foot (1 meter) electrical cable. Suitable monitors include the PendoTECH Flow Monitor, a PendoTECH PressureMAT-PLUS, or a PendoTECH Process Control System or other qualified 3rd party monitors.

How it Works and Connection to Monitors.

The flow sensor works by measuring the rotations of the
rotor that is in the flow path. The rotor rotates on a ruby bearing and is the only moving part. The rotor blades
reflect an infrared light beam and each rotation measured
is converted to an electrical pulse that is received by
the flow monitor which has a “pulse accumulator” that
counts the pulses. The rotations per second are converted
to volume/minute by a factor called the pulse constant.
The pulse constant is different for each rotor size and standard values are available. For best accuracy with
fluids of viscosity much different than water, the pulse constant can be easily calculated by measuring a known volume and setting the monitor to count the pulses. The
pulse constant is then calculated by the pulse counted divided by the volume. (See the schematic below.)

TECHNICAL
DOWNLOADS

Flow Meter
Specification Sheet

Sensor Features

• Available with hose barb fittings from ¼
  to ¾ inch and a flow range of 30 mL/min
  to 38 L/min
• Can be used to measure total flow in addition to flow rate
• Can be gamma irraditated with tubing and bag assemblies
• 1% accuracy
• Wide operating range
  (-20 to 80C)
• Fluid path materials meet USP Class VI
• Maybe be autoclaved to 140C