39
NRGT 26-2n - Installation & Operating Manual -
850879-00
Bringing into service
Manually initiating a display test
Pay attention to the setting instructions on page 36 and proceed as follows:
1.
Select the parameter “
diSP
”.
2.
Press and hold the rotary knob until the display test starts and shows “
....
”.
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 until it has finished, and cannot be interrupted.
5.
The display test ends with “
donE
”.
Replacing faulty equipment
Faulty equipment is a risk to system availability.
■
If numbers or decimal points are displayed incorrectly or not at all, you must replace the
level transmitter with an identical one from GESTRA AG.
Checking the level display by raising or reducing the level
Incorrectly installed or bent level electrodes result in a loss of function that can jeopard-
ise system availability.
Therefore, proceed as follows when bringing into service and when replacing level
electrodes:
■
Check the level display by raising and lowering the fluid to different levels within the
measuring range of the level electrode. Always perform this check with the system at its
operating point.
■
Never start up any system that has not passed the above tests.
■
The NRGT 26-2n level transmitter may only be repaired by the manufacturer, GESTRA AG.
■
Only replace faulty equipment with identical equipment from GESTRA AG.
Checking function by initiating a test function
Check function by initiating the test function using the rotary knob, see Test table on page 42.
