Calibration - Presys DMY-2030 Light Technical Manual

PRESYS
 Instruments

4.4 - Calibration

Warning: Only enter the following options after understand perfectly all
steps. Otherwise, it may be necessary to return the instrument to the factory for
recalibration. Calibration in this manual means adjustment.
DMY-2030-Light-5S-Energy Indicator is accurately calibrated in factory and does
not need periodic calibration in normal conditions. When calibration is required, follow the
procedure below:
 Disconnect the process signals of I/O terminals.
 Before calibrating the instrument, keep it turned on for at least 30 minutes to warm
up.
This section basically consists of two parts: input calibration and output calibration.
Input Calibration
The accuracy of the standard for calibration, to generate references, should be at
least twice as good as the specifications of the indicator. The references relate to the
type of input to be calibrated given in the following tables. In the right column of these
tables are the mnemonics shown on the display in the calibration process.
Before starting the calibration you need to enter at level 8 Calibration. The
calibration level has a password system that prevents inadvertently entries in this level
and changes in the indicator calibration parameters. The password to enter the
calibration level is the number 5.
Once satisfied the calibration password, select the type of input to be calibrated
within the option INPUT. The display shows the corresponding mnemonic to the
references required for the calibration process references should be put before the
appearance of the corresponding mnemonic on the display and the calibration starts by
pressing ENTER. At this moment the indicator enters the calibration process with the
display blinking the mnemonic CAL.
While the display is blinking the reference must remain connected to the input.
When the display stops blinking and returns to the corresponding mnemonic, the
calibration process of the first point is finished.
Switch to the next reference and press DOWN to select the next point. Between
any two calibration points always wait 1 minute. After this time, press ENTER to start the
calibration of this point.
After finished all the references in the table on the type of input to be calibrated,
the calibration process is complete.
You can redo the calibration of only one without affecting the other points already
calibrated if the calibration of this point was not well done.
To return to normal operation back the hierarchical levels to zero level.
Figure 26 shows the calibration input and output options for the level 8 - Calibration.
Maintenance
Page 34
DMY-2030-Light-5S-Energy