Sample rate
Gauge factor: (when Scaling type = Gauge) A number that expresses the strain sensitivity of the strain gauge.
(The strain sensitivity k of a strain gauge is the proportionality factor between the relative change in
resistance ΔR/R0 and the strain ε to be measured: ΔR/R0 =k · ε.) Refer to the sensor data sheet to enter the
correct value.
Bridge factor: (when Scaling type = Gauge) A number that expresses the number of active strain gauges used
in a Wheatstone bridge circuit. With tension and compression bars, Poisson's ratio has to be taken into
account as well. The value is between 1 and 4.
Engineering unit: (when Scaling type = Gain or Gauge) Output unit of the signal in the software after
scaling/conversion. Select the unit from the drop-down.
Min and Max: The measuring range is defined by a minimum and a maximum physical value between which
you expect the measured values to be.
Sample rate
The sample rate domain (or sampling method) is determined by the type of device:
l
Bridge boards (B201-10) support decimal sample rates.
l
CCLD boards (B301D-12) support binary sample rates.
For bridge boards, ensure that the filter and sample rate combination is supported. See below.
Bridge board sample rate/filter combinations
Bessel IIR filter low-pass
Cut-off
(Hz)
Max. Sampling Rate
(S/s)
Min. Sampling Rate
1
(S/s)
0.01 50 1
0.02 50 1
0.05 100 1
0.1 500 1
0.2 1000 2
0.5 1000 5
1 5000 10
2 10000 20
5 20000 50
10 20000 100
20 20000 200
- 46 -