8. Examples:
8.1 Temperature measurement
A temperature sensor with linear charac-
teristic (non-linear sensors, e.g. thermo-
couples have to be linearised) supplys 0 V
at -10 °C and 10 V at 80 °C. 0..10 V is
chosen as input range.
Assign -10 as „displayed value at min.
input signal" to the lowest input level (0 V)
and 80 as „displayed value at max. input
signal" (10V). The device is now tuned to
the sensor, measurement values and their
corresponding display values in between
are calculated.
Displayed value can be
freely adjusted to the input
value inside the display
range.
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8.2 Level measurement
A level sensor with linear characteristic
(non-linear sensors haveto be linearised)
supplys 19 mA at full tank and 5 mA at
empty tank. If the tank is filled up, 10 m 3
should be displayed and if the tank is
0 m 3 should be displayed.
empty
4..20 mA is chosen as input range.
Assign 0 as „displayed value at min. input
signal" to the lowest input level (5 mA)
and 10 as „displayed value at max. input
signal" (19 mA). The device is now tuned
to the sensor, measurement values and
their corresponding display values in bet-
ween are calculated.
8.3 Drawn quantity
Instead of the level, the drawn quantity
should be displayed.
Again 4..20 mA is chosen as input range.
Assign 10 as „displayed value at min.
input signal" to the lowest input level (5
mA) and 0 as „displayed value at max.
input signal" (19 mA).