Bronkhorst®
Instruction Manual MI Series Industrial mini CORI-FLOW™
9.17.120A
30
4.1
Measurement and control
Measure
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
R
0…41942
(65535*)
8
1/0
0x0020/33
This parameter indicates the flow metered by the instrument. The value of 32000 corresponds to 100%, the maximum
measured value output is 131.07%, which translates to 41942.
*In case the instrument is prepared for bi-directional measurement, the negative signals with an output range of -
73.73…-0.003% are represented by the range of 41943…65535, whereas the positive signals 0…131.07% are still
represented by the range of 0…41942. (FlowDDE converts the numbers to negative values automatically).
Setpoint
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned int
RW
0…32000
9
1/1
0x0021/34
This parameter is used to set the required flow rate for the controller. The signals have the same range as
Measure
, but the
setpoint range is limited between 0 and 100% (0…32000).
Temperature
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
R
-250…500
142
33/7
0xA138…0xA139/41273…41274
This parameter returns an indication of the actual media temperature in °C.
Pressure
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
0…3.4E+38
143
33/8
0xA140…0xA141/41281…41282
This parameter returns an indication of the actual (inlet) pressure in bar(a). By default the value of this parameter is equal to
parameter
Inlet pressure
.
Density Actual
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
R
0…3.4E+38
270
116/15
0xF400…0xF401/62465…62466
This parameter returns the actual density measured by the instrument. If the selected
Capacity Unit
is a volume flow type,
the instrument uses this parameter for conversion of the measured mass flow to the selected unit.
4.1.1
Advanced measurement and control
Fmeasure
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
R
-3.4E+38…
3.4E+38
205
33/0
0xA100…0xA101/ 41217…41218
Floating point variant of
Measure
.
Fmeasure
shows the measured value in the capacity unit for which the instrument is set.
The instrument uses parameters
Capacity
,
Capacity 0%
,
Capacity Unit
and
Sensor Type
to calculate
Fmeasure
.