Electromagnetic Flowmeter
BF
M921
BASI
20
Operation manual
Temperature
Unit
Function enables user to set temperature units.
Available units are:
°C
°F
K
Datalogger
Interval
Function enables user to set sample interval for internal
datalogger between 5 and 240 minutes, or turn
datalogger off.
Memory usage
Function displays memory usage in %. Datalogger
capacity is over 100 000 samples.
Clear
Function enables user to clear datalogger memory.
Table 5 : Settings for measurement
4.2.3
Input/output interface
Following table lists only brief explanation of configuration of inputs and outputs. For more detailed guide
on inputs and outputs configuration see chapter Inputs and outputs configuration.
Setup menu/I/O interface
Level 1
Level 2
Description
PC interface
Active bus
Active bus can be selected between RS232 and RS485 protocols.
RS485 address
RS485 address can be assigned from 0 to 31.
Baudrate
Baudrate can be selected from 1200 to 115200.
Mode
Output mode can be selected from normal, Modbus RTU and Modbus
ASCII
Modbus parity
Modbus parity mode can be selected from none, even or odd parity.
Modbus address Modbus address can be selected from 1 to 247.
Current
output
Mode
Output mode can be selected from Off, Positive flow, Negative flow,
Absolute flow, Bipolar flow and Fixed.
Fixed current
Item allows setting current amplitude in the current mode f) (Fixed). The
range is from 4 mA to 20 mA.
Qi 20mA
Item allows setting the Qi constant. Qi represents a flowrate for a
current of 20 mA and can be set
independently to the nominal diameter of the sensor.
Loop test
Item allows enable/disable the current loop test. The flowmeter will
detect a fault (Error 08 – Current open)
if the test is enabled and current loop is not connected.
Error current
Item allows setting current loop error current from 3 mA to 3.75 mA or
from 21 mA to 24 mA. Current
output is switched to selected value in case of present error state in flow
meter.
Frequency
output
Mode
Output mode can be selected from Off, Positive flow, Negative flow,
Absolute flow, On positive, On negative, On In, On out, Dose on, Dose
off, On<F2, O
n
>F2 and Fixed.
Fixed frequency
Item allows setting frequency in the frequency mode m) (Fixed). The
range is between 10 and 12000 Hz.
Qf 1kHz
Item allows setting the Qf constant. Qf represents the flowrate for the
frequency 1000Hz and can be set
independently to the nominal diameter of the sensor.
Pulse
output
Mode
Output mode can be selected from Off, Positive flow, Negative flow,
Absolute flow, On positive, On negative, On In, On out, Dose on, Dose
off, On<F1, O
n
>F1 and Fixed.
Pulse width
Item allows setting pulse width in ms. Available widths are 2.5, 5, 10, 25,
50, 100, 250 and 500 ms.
