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BASI
1 Basic information
1.1 Basic features
The inductive flow meter BFM921 is designed to measure, indicate and record the instantaneous and total
flow of the conductive media flowing through the sensor. The flow meter BFM921 records both forward
and reverse flows. As there are no moving parts in the flow profile the BFM921 can be used to measure
extremely dirty liquids containing solids. The only limitation is that the flowmeter can be used solely with
conductive liquids.
Range of applications. The inductive flow meter BFM921 is for use in the Chemical Industry, Paper
Industry, Water and Wastewater Treatment Industry and most other process industries.
Features. The inductive flowmeter BFM921 is a highly accurate and stable device. The construction of
the BFM921 flowmeter uses components with long-term, time and temperature stability. Configuration
data is backed up and can be recovered after a power failure. The back-up structure enables data recovery
even if a partial loss of data occurs as a result of (e.g. high level electrostatic discharge or a noisy
power supply). Internal CPU provides all functions usually built in electronic flow meters, incl. low
flow rate correction, frequency response setting, bandwidth of sensitivity setting at low flow rates, etc.
Outputs. Flowmeter BM921 is equipped with 6 standard isolated outputs: 4 to 20mA either active or
passive, frequency output, impulse output, status output (with relay), RS485 and USB/RS232 output.
User can configure these outputs.
Inputs. Flowmeter BFM921 has one programmable digital input (PLC).
Power supply. Basic power supply version is 85 to 264 V AC. 12, 24 and 48 DC power supply versions
are also available as an option.
1.2 Warranty
Within the manufacturers general supply conditions, all material and manufacturing faults are covered by
warranty. Upon warranty claim, BASI will test the item and decide whether to repair it or replace with a
new one. Place of the warranty obligation is Swedewn. Further claims on compensation, especially for loss
of production or resultant of damages, are strictly excluded.
Any defects caused by improper use are absolutely not included in the warranty. Excluded from warranty
are also expendable items (as i.e. accumulators, batteries, pushbuttons after attained life time, ribbons, etc.)
In case of a warranty claim the user is asked to give detailed description of the defect and also of
the application for which user use the product. This information is important in order to avoid time and
cost extensive tests and for the eventual achievement of warranty claims from our suppliers and sub-
suppliers. For the item or instrument, returned after the expired warranty time, repair or replacement on
warranty can only be accepted, if manufacturer has been informed in time that a warranty case has
occurred.
Warranty period for all types of electromagnetic flowmeter is 24 months.
The flowmeter should only be used
according to the instructions described in
Operation manual
this operating manual.
Electromagnetic flowmeter BFM921
5
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