Technical data

Flow meter FC01-Ex Flow meter FC01-Ex
Examples 67 Examples 67
9 Examples
9.1 Example 1: Calorimetric monitoring head- Medium water - New curve
Task definition
The FC01-Ex with calorimetric monitoring head shall be used to control a water cooling cycle.
The flow velocity to be controlled and measured lies between 0.00 m/s and 1.80 m/s at a con-
stant medium temperature of approx. +82 °C.
A flow meter to be used as a reference instrument is available on loan
.
Approach
As the accuracy does not need to be very high (±5%), it is supposed that 10 trim points are
required to provide a satisfactory solution. To obtain a higher accuracy, the number of trim points
can be increased to 20.
The distribution of the 10 trim points should be linear over the entire measuring range.
Implementation
Select the calorimetric sensor in submenu SENSOR SELECT and the medium FLUID in sub-
menu MEDIUM SELECT before making the custom designed calibration.
Enter 1023 (marked on sensor) as C value to define the sensor-specific tolerances. The T value
is a code for the temperature sensitivity of the sensor and needn’t be taken into account for this
application. The preset value of 50 is transferred.
After entering and confirming the sensor-specific data, press ▲ UP and ▼ DOWN in order to
branch into menu CUSTOMER TRIM.
The settings required for the custom-designed calibration start after the 3-digit code - ACCES
CODE - (see para. 5.1.1.4.1) has been entered.
As an already filed custom-designed curve has to be completely overwritten, the inquiry about
the CHARACTERISTICS of the curve shall be answered by new. In that case, the trim points
selected are pre-assigned to data (see para. 4.2.5).
Enter 10 as the NUMBER OF TRIM POINTS by pressing ▲ UP and ▼ DOWN.
The temperature difference setpoint - TEMPERATURE DIFFERENCE - is shown in the table of
para. 4.2.1 where a temperature difference of 3.3 °C is indicated for water in this flow velocity
range.
As in this example a new custom-designed curve is to be determined, it is necessary to assign
the max. flow velocity (1.80 m/s) to trim point 10. The remaining trim points (9 …1) are auto-
matically and linearly assigned as follows:
9 Examples
9.1 Example 1: Calorimetric monitoring head- Medium water - New curve
Task definition
The FC01-Ex with calorimetric monitoring head shall be used to control a water cooling cycle.
The flow velocity to be controlled and measured lies between 0.00 m/s and 1.80 m/s at a con-
stant medium temperature of approx. +82 °C.
A flow meter to be used as a reference instrument is available on loan
.
Approach
As the accuracy does not need to be very high (±5%), it is supposed that 10 trim points are
required to provide a satisfactory solution. To obtain a higher accuracy, the number of trim points
can be increased to 20.
The distribution of the 10 trim points should be linear over the entire measuring range.
Implementation
Select the calorimetric sensor in submenu SENSOR SELECT and the medium FLUID in sub-
menu MEDIUM SELECT before making the custom designed calibration.
Enter 1023 (marked on sensor) as C value to define the sensor-specific tolerances. The T value
is a code for the temperature sensitivity of the sensor and needn’t be taken into account for this
application. The preset value of 50 is transferred.
After entering and confirming the sensor-specific data, press ▲ UP and ▼ DOWN in order to
branch into menu CUSTOMER TRIM.
The settings required for the custom-designed calibration start after the 3-digit code - ACCES
CODE - (see para. 5.1.1.4.1) has been entered.
As an already filed custom-designed curve has to be completely overwritten, the inquiry about
the CHARACTERISTICS of the curve shall be answered by new. In that case, the trim points
selected are pre-assigned to data (see para. 4.2.5).
Enter 10 as the NUMBER OF TRIM POINTS by pressing ▲ UP and ▼ DOWN.
The temperature difference setpoint - TEMPERATURE DIFFERENCE - is shown in the table of
para. 4.2.1 where a temperature difference of 3.3 °C is indicated for water in this flow velocity
range.
As in this example a new custom-designed curve is to be determined, it is necessary to assign
the max. flow velocity (1.80 m/s) to trim point 10. The remaining trim points (9 …1) are auto-
matically and linearly assigned as follows: