Reference Manual
IP2013, Rev BA
February 2012
Mobrey MSP422
First Measurements | With the transmitter installed and display units selected, the display will show | ||
| what the instrument calculates as the liquid depth (level). This value is | ||
| calculated by the microprocessor as being the difference between the | ||
| |||
| bottom reference (b.rEF). | ||
Figure |
|
|
|
|
|
|
|
Bottom Reference
Depth (Level)
Before changing any of the default values, press the blue button → to change the PV display to indicate
NOTE:
A useful feature at this stage is that the transmitter can be used as an electronic tape measure. With an empty tank or vessel, the transmitter will read the distance to the bottom of the tank. This distance can be noted and later used when setting b.rEF.
Press the blue button → again to get to the echo size. This is a scale of 0 to
100.(It is possible to record a value greater than 100). With the display in this mode, the central “:” cursor will flash once for every echo received, which under normal circumstances will be once per second.
NOTE:
It is useful at this point to check that the maximum echo size available is being received. Adjust the position of the instrument until the highest echo size is continually shown. In most applications, the signal strength will vary over a wide range: 20 to 80.
Press the blue button → again to return to the original level reading and start the calibration routine.
NOTE:
The output of the transmitter will vary during programming, as the various default values are changed. The display will automatically revert to the level or distance reading from any other display after a period of four minutes.
