Gantner Q Series Manual page 86

Configuration → Setting sensor parameters
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Depending on the selected sensor type, you have various
options available, e.g. 2-Wire or 4-Wire (circuit) for resistive
transducers or Full 4-Wire or Full 6-Wire (circuit) for strain-
gauge full bridges.
The Connection column shows you the pin assignment to be
used. With more than one input the first inputs are also
always occupied first (and first Plug 1, then Plug 2, etc.).
Check that your sensor is connected correctly.
6. Click in the Format/Adjustment column to enter the scaling
for the sensor.
Depending on the type of sensor selected you have various
options available (refer also to Section 6.4, Sensor scaling,
Page 116):
– For voltage signals specify the conversion of the measured
voltage to the physical quantity measured by the sensor or
output the measured voltage quantity without conversion
(scaling).
– For thermocouples or Pt100 sensors no further scaling is
required as the conversion into °C is made automatically.
The scaling is only needed when you want to convert to °F
or K. In this case enter the Unit (type into the field) and
then click on Scaling. Use the method Factor and Off-
set. For a display in °F enter the factor 1.8 and 32 as the
offset. For a display in °K enter the factor 1 and -273.15
as the offset.
– For full and half-bridge transducers you can obtain the
data from the data sheet or (better) from the transducer
calibration certificate. For a force transducer with, for
example, 2.03 mV/V at 5 kN enter the Unit (type kN in the
field) and then click on Scaling. Use the method 2-point
calibration. Enter in each case 0 for Point 1 for Input
and Displayed measurement; for Point 2 enter 2.03 as
Input value and 5 as Displayed measurement.
Alternatively, you can also enter N as Unit and then 5000
as Displayed measurement for Point 2.
For strain gauges you have the Strain gauge calculator
–
available. Here, the unit is automatically changed to μm/
m. In the dialog enter the gauge factor of your strain
gauge (left field) and the bridge factor (right field) for
your circuit.
Then enter how many post decimal places (Precision) and
how many places in total are to be output (Field Length). The
field length is calculated including the decimal point, but
without any commas displayed for the thousands.
After closure of the dialog the number of transferred places
and the unit are displayed in the Format/Adjustment col-
Vers. No. 4.0
Released: 5/12/2011