Bronkhorst®
Instruction Manual EL-FLOW® Select
9.17.099J
7
1
Introduction
1.1
Scope of this manual
This manual covers the
EL-FLOW® Select
(including the EL-FLOW® Metal Sealed) series mass flow meters/controllers for
gases. It contains general product information, installation and operating instructions and troubleshooting tips.
Standard
Metal sealed
1.2
Intended use
The
EL-FLOW® Select
is designed to accurately measure and/or control gas flow rates in a fluid system using the media and
operating conditions (e.g. temperature, pressure) that were specified at ordering time.
The gas(es) in the pressurized system in which the instrument is mounted must be clean and dry. The equipment is suited
for general purpose indoor (dry) applications, like laboratories and machine enclosures.
EL-FLOW® Select
instruments are suitable for use at temperatures conditions between -10 and +70 °C and a relative
humidity of 10 to 90% RH, unless specified otherwise. The instruments have an ingress protection of IP-40, implying that the
electronics housing and electrical connection do not offer any protection against moist environments.
EL-FLOW® Metal Sealed
instruments are designed for high purity applications.
The wetted materials incorporated in the EL-FLOW® Select are compatible with media and conditions (e.g. pressure,
temperature) as specified at ordering time. If you are planning to use the product (including any third party components
supplied by Bronkhorst, such as pumps or valves) with other media and/or other conditions, always check the wetted
materials (including seals) for compatibility. See the technical specifications of the product and consult third party
documentation (if applicable) to check the incorporated materials.
Responsibility for the use of the equipment with regard to its intended use, suitability for the intended application, cleaning
and compatibility of process media with the applied materials lies solely with the user.
The user is responsible for taking the necessary safety measures to prevent damage and/or injury while working with the
equipment and process media (as described in the associated Material Safety Data Sheets).
Where appropriate, this document recommends or prescribes safety measures to be taken with respect to media usage or
working with the described equipment under the specified conditions. However, this does not relieve the user of
aforementioned responsibility, not even if such is not explicitly recommended or prescribed in this document.
Bronkhorst High-Tech B.V. cannot be held liable for any damage and/or injury resulting from unintended, improper or
unsafe use, or use with other media and/or under other process conditions than specified at ordering time.
See also section
Sealing material compatibility
1.3
Product description
EL-FLOW® Select
series Mass Flow Meters/Controllers are based on the thermal bypass measuring principle. The instruments
are of modular construction with a 'laboratory style' printed circuit board housing. Control valves can either be integrally or
separately mounted, to measure and control gas flows from 0,014…0,7 ml
n
/min up to 8…1670 l
n
/min N
2
-equivalent.
