39
NRG 26-60 - Installation & Operating Manual -
819875-00
Bringing into service
Performing a calibration to the upper bound of the active measurement range “CAL.H” (100 %
calibration value)
The calibration via “CAL.H” delivers the greatest possible precision for setting the measure-
ment range.
Note the setting instructions on page 35 and proceed as follows:
1.
Raise the water level in the boiler to the 100 % limit of the required measurement range.
2.
Select the parameter “
CAL.H
”, the old value will appear in hexidecimal display after
approx. 3 seconds.
3.
Press and hold the rotary knob until the new value appears.
4.
Save your set value by pressing the rotary knob for approx. 1 second.
Setting the filter constant “Filt”
You can set a time constant here to settle the output signal for the level controller and the
display.
Note the setting instructions on page 35 and proceed as follows:
1.
Select the parameter “
Filt
”. The current filter constant value is displayed.
2.
Press and hold the rotary knob until the current time constant flashes on the display.
3.
Set the desired time constant (1 to 30 seconds).
4.
Save your set value by pressing the rotary knob for approx. 1 second.
Manually triggering a display test
Note the setting instructions on page 35 and proceed as follows:
1.
Select the parameter “
diSP
”.
2.
Press and hold the rotary knob until the display test starts by showing “
....
”.
3.
The following numbers and decimal points run across the display from right to left:
“...., 1, 2, 3, 4, 5, 6, 7, 8, 9, ....”
4.
Check that all numbers and decimal points are displayed correctly.
The display test runs automatically to the end and cannot be aborted.
5.
The display test ends with the message “
donE
”.
Replacing faulty equipment
Faulty equipment jeopardises system safety.
■
■
If numbers or decimal points are displayed incorrectly or not at all, you must replace the
level electrode with an identical unit from GESTRA AG.
