Bronkhorst®
Instruction Manual mini CORI-FLOW ML120
9.17.097G
7
1
Introduction
1.1
Scope of this manual
This manual contains general product information, installation and operating instructions and troubleshooting tips for the
mini CORI-FLOW ML120
series mass flow meters and controllers for liquids and gases.
1.2
Intended use
The Bronkhorst® series
mini CORI-FLOW ML120
is an accurate mass-flow meter/controller for measuring gas and liquid
flows up to 200 bar(a) depending on body rating, virtually independent of pressure and temperature changes. The mini
CORI-FLOW is a real mass-flow meter/controller and measures the flow in mass, it does not matter what the properties of
the gases or liquids are. The system can be completed with an internal piezo control valve and a flexible readout unit to
measure and control gas and liquid flows.
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
mini CORI-FLOW ML120
instruments by Bronkhorst® are precise and compact Mass Flow Meters and Controllers for liquids
and gases, based on the Coriolis measuring principle. Designed to cover the needs of the (ultra) low flow market, from 5 g/h
up to 200 g/h (full scale values), the
mini CORI-FLOW
offers multi-range functionality: factory calibrated ranges can be
rescaled by the user, maintaining the original accuracy specifications.
Instruments of the
mini CORI-FLOW
series contain a uniquely shaped, single loop sensor tube, forming part of an
oscillating system. When a fluid flows through the tube, Coriolis forces cause a variable phase shift, which is detected by
sensors and fed into the integrally mounted printed circuit board. The resulting output signal is strictly proportional to the
real mass flow rate. Coriolis mass flow measurement is fast, accurate and inherently bi-directional. The
mini CORI-FLOW
features density and temperature of the fluid as secondary outputs.
Multi-range
The
mini CORI-FLOW ML120
offers multi-range functionality: factory calibrated ranges can be re-ranged to a different full
scale range (e..g. a mini CORI-FLOW model ML120 can be used for full scale ranges between 5 g/h and 200 g/h). The analog
output and the digital measured value are scaled accordingly.
Switching between ranges can be done using the RS232 interface or the fieldbus interface. For RS232 communication,
Bronkhorst offers free tooling software (FlowPlot).
The instrument comes with a calibration certificate for all supported full scale ranges. The actual full scale of the instrument
is set to a value as ordered and can be found on the instrument label.