3-10
IM CA700-02EN
Measurement Feature and Source Feature
The measurement feature measures the output from the calibration target, and the source feature
outputs the input to the calibration target. If you set the source feature to pressure, the CA700 only
monitors the input to the calibration target.
The combinations of the measurement feature and source feature are as follows.
Measurement Feature
Source Feature
Pressure (P)
Pressure (external pressure
sensor, EXT P)
DC current (mA SOURCE)
Simulation (mA SIMULATE)
DC voltage (V SOURCE)
Pressure switch (P SWITCH)
Pressure switch (external pressure
sensor, EXT SWITCH)
—
DC current (mA MEASURE)
Pressure (P)
Pressure (external pressure
sensor, EXT P)
Loop current (mA LOOP)
DC voltage (V MEASURE)
When EXT P or EXT SWITCH (for only measurement functions) using the external pressure sensor is
set for the measurement and source functions, set the type (Sensor Type) and range (Range) of the
sensor. For details, see the User’s Manual IM CA700-01JP contained in the CD-ROM.
Unit (Pressure)
You can select from mbar, bar, Pa, hPa, kPa, MPa, atm, mmHg, inHg, gf/cm
2
, kgf/cm
2
, mmH
2
O@4°C,
mmH
2
O@20°C, ftH
2
O@4°C, ftH
2
O@20°C, inH
2
O@4°C, inH
2
O@20°C, Torr, psi.
Averaging
The CA700 displays moving average results.
Scaling
The CA700 displays linearly scaled results. You can assign a unit appropriate for the values after
scaling.
The scaling method is the same as pressure measurement. See section 2.1.
0% Value and 100% Value
Set the 0% and 100% of the calibration range in terms of the calibration target input and output (which
corresponds to the input).
Calibration target input (source feature)
Calibration target output (measurement feature)
0%
100%
0%
100%
Tolerance for Pass/Fail Judgment
Set the tolerance for making pass/fail judgments on calibration results. The tolerance is set in
reference to the 0% and 100% values described above.
Tolerance = ±((100% value of the measurement feature – 0% value of the measurement
feature)×tolerance setting/100)
For example, when the calibration target output is 4 mA to 20 mA and this range is assigned to 0 to
100%, if the tolerance range is set to 0.02%, the tolerance is given by
±(20 mA – 4 mA)×0.02/100 = ±0.0032 mA.
3.2 Setting the Device Information and the Calibration Conditions of the Pressure Transmitter
Summary of Contents for CA700
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