gefran TKDA series Operating Manual

The transmitter remains on the std operating mode, till an
external event happens.
The possible channels to activate the additional functions
are the following:
- CAL pin
- Magnetic pen
The operating manual explains the following features:
1) Autozero
2) Fine-Autozero
3) Calibration
1) A
UTOZERO
Application mode
The Autozero function is activated by :
1) positioning the magnet near the
Autozero label on the shell of the
sensor.
The magnet has to be maintained on
the Autozero position for a time within
1 to 10 sec.
NOTE:
During the Autozero phase, the output for current transmitter series, will increase around 7mA.
That's a short variation only visible during the Autozero phase; it won't have any effects on the final result.
Figure 1
85189_MAN_TKDA-TPSADA_0107_ENG
INDUSTRIAL PRESSURE TRANSMITTER
TKDA/TPSADA series
Limits
The whole Zero unbalancement in
addition to the zero done by the
manufacturer, has to be within ± 10%
FS.
Figure 2
O
PERATING MANUAL
D A
IGITAL UTOZERO
code 85189 ed. 01 - 01/07
This section contains information and warnings of a
general nature which should be read before proceeding
with any function activation
4) Autospan
5) Partial Reset
6) Total Reset
CAL pin: activation of CAL function (Calibration, Autospan)
is made by closing the contact between the following pin:
• 6 pole connector version (V)
• 7 pole connector version (P)
The following pages explain the application modality, for all
the additional functions.
The contents are related to application limits and aims.
Result
The Autozero effect will be visible
after waiting 2 sec from the release of
the magnetic pen.
The precision of the zero value will be
within the accuracy class of the sen-
sor.
The Autozero function doesn't work
outside the defined limits.
Figure 1 : represents the "magnetic pen"
Figure 2 : represent the Autozero function label
on the sensor housing
Figure 3 : shows the position of the pen on the
shell while activating the autozero
Figure 3
function
& S O
PAN PTION
pin E-F
pin 5-6
1