MEATEST
Electromagnetic flowmeter M921
Operation manual
5
1
Basic information
1.1
Basic features
The inductive flow meter M921
is designed to measure, indicate and record the instantaneous and total flow
of the conductive media flowing through the sensor. The flow meter M921 records both forward and reverse
flows. As there are no moving parts in the flow profile the M921 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 M921 is for use in the Chemical Industry, Paper Industry,
Water and Wastewater Treatment Industry and most other process industries.
Features.
The inductive flowmeter M921 is a highly accurate and stable device. The construction of the
M921 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 M921 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 M921 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, Meatest will test the item and decide whether to repair it or replace with a
new one. Place of the warranty obligation is Czech Republic. 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
this operating manual.
