Bronkhorst®
Instruction Manual ES-FLOW™
9.17.116B
7
1
Introduction
1.1
Scope of this manual
This manual covers general product information, installation and operating instructions and troubleshooting tips for the
ES-FLOW™
digital volume flow meter/controller for liquids.
1.2
Intended use
The
ES-FLOW™
is designed to accurately measure and control low volume flows with high precision and a limited pressure
drop. A wide range of liquids can be measured independent of fluid density, temperature and viscosity.
The end user is considered to be familiar with the necessary safety precautions, and to comply with the appropriate
protective measures as described in the Material Safety Data Sheets of the media to be used in the system (if applicable).
Responsibility for the use of the equipment with regard to suitability, intended use, cleaning and corrosion resistance of the
used materials against the metered media lies solely with the end user.
Bronkhorst High-Tech B.V. cannot be held liable for any damage resulting from improper use or use for other than the
intended purpose.
1.3
Product description
The
ES-FLOW™
is a precise and compact volume flow meter with control function for liquids, based on a novel ultrasonic
technology.
Measuring principle
Measuring is done in a straight tube, without obstructions or dead spaces. Multiple transducers measure both the surface
acoustic wave and the transit time through the media. All up- and down-stream combinations are recorded and processed
in nanoseconds. The sound wave velocity and the surface area are recalculated to the volume flow value. This ultrasonic
measuring method is fast, accurate and inherently bi-directional.
Application
The combination of a straight sensor tube with zero dead volume, self-drainability, orbital TIG-welding and hygienic
connections, makes the ES-FLOW especially suitable for hygienic applications. For non-hygienic applications, the instrument
can be equipped with compression type fittings. Wetted parts are made of stainless steel, the housing has a high ingress
protection rating.
