Bronkhorst EL-FLOW Prestige - Manual (Page 6)

Bronkhorst High-Tech B.V.
EL-FLOW Prestige 9.17.084 6
1 Scope of this manual
1.1 Introduction
This manual covers the EL-FLOW Prestige series mass flow meters/controllers for gases. Examples of the instrument series are
shown in the pictures below. This manual includes product information, installation instructions, operation, maintenance and
troubleshooting.
1.2 Intended use
The intended use of the EL-FLOW Prestige instruments is to accurately measure and/or control gas flow rates of a specified gas at
conditions noted on the instrument label. The gas in the pressurized system in which the instrument is mounted has to be clean
and dry. The instruments are suited for general purpose indoor (dry) applications, like laboratories and in well protected (OEM)
housings. The instruments can be used for either (fast) switching gas flow or for controlling a constant flow rate (mass flow
controllers only).
1.3 Product description
EL-FLOW Prestige is the next generation of Bronkhorst Mass Flow Meters/ Controllers using the latest, highly accurate, thermal by-
pass sensor technology and featuring excellent control characteristics. Thanks to the advanced sensor technology in combination
with a state-of-the-art pc-board, the instruments feature improved long-term stability as well as an unsurpassed temperature
stability. Furthermore, due to a power efficient microprocessor, the power consumption of the instrument is reduced. The mass
flow meters and controllers can be supplied in full scale ranges from 0,7 ml
n
/min up to 20 l
n
/min Air-equivalent at max. 64 or 100
bar (1000 or 1500 psi) pressure rating.
EL-FLOW Prestige offers high flexibility due to the multi-gas/multi-range functionality. This function, now extended to 25 gases and
mixtures thereof, is easily accessible via the FlowTune TM software or PLC; there is no need to disconnect the instrument from your
system. For additional gas types the user can calculate accurate fluid properties for conversion by means of our free, online
software tool Fluidat® on the Net. Users of EL-FLOW Prestige instruments can rescale their instruments on site, saving time and
money for dismounting and recalibration.
Numerous input/output options can be installed through the programmable sub-D 9-pin connector (from factory). In addition to
the various analog signal options and the standard RS232 communication, there are such options as RS485 communication, digital
frequency/pulse output, alarm output/reset, valve purge/close and analog valve output. Furthermore Bronkhorst offers various
integrated fieldbus options: DeviceNet TM , PROFIBUS DP, Modbus RTU/ASCII, EtherCAT®, PROFINET and FLOW-BUS.