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4 Wiring
#
!
26
5
Operation
5.1
Display and operating elements
The programming is executed through 3 keys mounted on the bottom of the display. The central
key is the Enter (
) key. The lateral keys act as the up
F
of the parameters (see → fig. 5).
Key
Function
F
Access to the programming; move to the following parameter menu; saving of data and close of the
programming
Decreasing digit; selection/set-up of a parameter
Increasing digit; selection/set-up of a parameter
+
"Escape"
5.2
Local operation
Press the key
for more than 3 seconds to get access to the programming procedure. The display
F
will visualize the "
" function, which is the first programming section:
dP
the
(increase) and
(decrease) keys it's possible to scroll all the other programming windows.
At the end of the programming phase the modified parameters are stored automatically and retained
also during the switch off of the instrument.
5.3
Calibration
By pressing contemporary the
ting function where it is possible to calibrate the zero and the full scale of the A/D converter of the
digital indicator.
Warning!
Entering this procedure and modifying the parameters means to change the factory calibration data:
this function must be executed by specialised personnel only by using adequate instrumentation. A
wrong calibration will affect and compromise the right functionality of the instrument itself.
Zero-point calibration
Inside the calibration window, select the ZERO point calibration (
instrument, wait for the stabilization of the signal and of the indication and press the key
indication
will appear on the display. After few seconds, the new engineering ZERO value will
CAL
be indicated.
Exit the Zero-point calibration by pressing
calibration.
Full scale calibration
Inside the calibraion window, select the Full Scale calibration (
a 20 mA current to the instrument and proceed as for the Zero-point calibration.
Note!
Please follow the mentioned sequence: first calibrate the Zero-point, then the Full Scale. It's impor-
tant to respect the calibration sequence in order to avoid wrong indications.
and down
+
keys for more than 3 s, it is possible to access to the calibra-
+
keys together and proceed with the Full Scale
digit; they also act as selection
ecimal
oint. By pressing
D
P
). Apply a 4 mA current to the
C4
F
) by pressing
or
keys, apply
C20
Endress+Hauser
TA20J
until the
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