
______________________________________ Bronkhorst® ______________________________________
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9.17.119A MASS-STREAMTM Instruction Manual D-6400
1.3.Product description
Optional connector for fieldbus
Display for readout and control
Inlet connection
LED status indicator and push button
Outlet connection
The MASS-STREAM D-6400 instruments are measurement devices for thermal mass flow and control of gases. They
are equipped with a digital electronic multi-bus pc-board and consist of a micro-controller with peripheral circuitry for
measuring, controlling and communication. The flow signal is measured directly in the gas flow, digitized and processed
by means of the internal software (firmware). The measured and processed values can be output through the analog
interface or through the digital communication line (RS232 or optional fieldbus interface).
For controllers the setting for the actuator is calculated by the firmware. The setpoint can be given through the analog
interface or through the digital communication line.
These digital instruments offer great flexibility thanks to the "multibus" concept, whereby the instruments can be
equipped with an on-board interface with DeviceNet™, PROFIBUS DP, PROFINET, Modbus, EtherCAT®, FLOW-BUS
or EtherNet-based protocols.
Numerous input/output options can be installed through the programmable 8DIN connector (see Customized I/O). 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.
The MASS-STREAM D-6400 instruments offer high flexibility due to the multi-gas/multi-range functionality. This function
is easily accessible via the FlowTune™ 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 MASS-STREAM D-6400 instruments can rescale their instruments
on site, saving time and money for dismounting and recalibration.
The micro switches and LED’s on top of the instrument can also be used for manual operation of some options.
1.4.Calibration
The MASS-STREAM D-6400 is factory calibrated. Periodical inspection, recalibration or verification of the accuracy may
be subject to individual requirements of the end user.
Bronkhorst certifies that the instrument meets the rated accuracy. Calibration has been performed using measurement
standards traceable to the Dutch Metrology Institute (VSL).
1.5.Maintenance
The MASS-STREAM D-6400 needs no regular maintenance if operated properly, with clean media, compatible with the
wetted materials, avoiding pressure and thermal shocks and vibrations. Units may be purged with a clean, dry and inert
gas.
In case of severe contamination, cleaning the inside of the device may be required. After cleaning, recalibration of the
instrument is recommended.
Inexpertly servicing instruments can lead to serious personal injury and/or damage to the instrument or
the system it is used in. Servicing must therefore be performed by trained and qualified personnel.
Contact your Bronkhorst representative for information about cleaning and calibration. Bronkhorst has
a trained staff available.