UPW Flow Controllers for PMS Liquid Particle Counters


Anytime your Particle Measuring Systems’ liquid particle counter is disconnected and reconnected to the sample line, the sample/test lines and the sensor should be flushed to remove any bubbles. While power is turned off to the particle counter, follow the procedure in this video.

FC-200 and FC-100 for UPW

Complete flow control of ultrapure water through a liquid particle counter is critical to ensure accurate and actionable data. Particle Measuring Systems (PMS) offers the new FC-200 and FC-100 series of pressure balancing flow controllers as the perfect complement to our high precision liquid particle counters.

The FC-100 automatically adjusts to pressure changes within the particle counting system to provide precise and stable ultrapure water flow control without intervention. Available with a variety of flowmeters, the FC-100 is designed to match the particle counter’s flow rate.

The FC-200 model adds an additional flowmeter that provides a high flow rate flush to quickly clear the fluid lines and particle counter of any trapped air or particles without any change to plumbing. This flush gets you back to collecting accurate data as soon as possible after installation and is recommended for the Ultra DI® 20 liquid particle counter.


  • Flush flowmeter with the FC-200
  • Customizable flow ranges available for ultrapure water
  • Compatible with ultrapure water 20 – 100 psi and 0 – 90 °C


  • Automatically adjusts to ultrapure water system pressure changes
  • Clears anomalies from fluid lines with the flush flowmeter
  • Extremely accurate measurements
  • Seamless integration into water systems


  • Deionized water (ultrapure water) sampling systems
  • Parts cleanliness testing
  • Laboratory water sampling
  • Sampling for process and filter monitoring

Additional information

Product Type





Parts Cleaning, Ultrapure Water / DI Water

Supporting Materials