4
IE-SNC-T2114-03
Typical application wiring
Calculation of minimum power voltage Uss for proper
operation:
Uss min > Uo +Imax*Rz,
where: Uo = 9 V
Imax... about 20 mA
Rz...sensing resistor (shunt))
LCD Info mode
It is possible to check stored output scale without using of computer. It is necessary to have
connected current loop I1 (device is powered throw loop).
Unscrew the transducer lid and shortly press button between display and interconnection
terminals by means of a tool (e.g. screwdriver).
It shows preset value of pressure for current output I1. Lower LCD line
shows current value (at mA) which is associated to the lowest pressure
output (value displayed at upper LCD line). Here 4 mA corresponds to
800 hPa.
Press button again to get value for upper point similarly as at previous point.
Here 20 mA corresponds to 1100 hPa.
Notice:
during info mode no measurement and no output current generation
proceed. The device stays at info mode 15 s and then automatically goes back to measuring cycle.
Readings on LCD display
hPa, PSI, inHg,
Reading next to this symbol is measured pressure or error state of value. If selected pressure unit is
mBar
or
oz/in
2
or
mmHg
or
inH
2
O
or
kPa
, there is shown only value (number) without
corresponding pressure unit!
symbol
3
near by left display margin
Is on if jumper is closed.
Technical parameters:
Power: 9 to 30 V dc
, maximum ripple 0.5 %
Measuring parameters:
Atmospheric pressure:
