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NOTE FOR 3 OR 4-WIRE TX SIMULATION
When a 3 or 4 wire TX simulation is required, it is sufficient to
ignore the power supply of the instrument under test and to connect
and program the calibrator as for standard mA generation (see
chapter 3.9).
HOW TO EXECUTE A 2-WIRE TX SIMULATION.
Push the MEAS push-button; the display will show:
Pushing
s
or
t
push-button select the "mA" input type.
Push the FUNC push-button; the display will show the following:
Where:
NON - RANGEABLE
allows to select a mA measurement without scaling (with a read-out
in mA).
RNG(L)
allows to select a mA input with read-out scaling (the read-out is
expressed in engineering unit and not in mA).
RNG( )
allows to select a mA input with square root extraction on the
measured value and programmable read-out scale in engineering
units.
3.10.1 - NON RANGEABLE - TX simulation without scaling
Example 1
: it is desired to simulate a 2-wire, 4 to 20 mA transmitter
while the "mA measuring device with auxiliary power supply" is
programmed for a read-out going from -10.000 to 10.000 (m/s).
Pushing
s
or
t
push-button, select the NON RANGEABLE input
type.
Push the FUNC push-button.
The display will show:
Where :
20, 200
show the selectable 20mA, 200mA fix ranges.
Note
: the 200 mA is limited at 130 mA.
When a fixed range is selected the instrument will use a fix
decimal figures.
AUTO
indicates that the instrument automatically selects the proper
input range in order to measure the input signal with the max.
possible resolution.
MEAS
TC RTD mA mV TX
NON - RANGEABLE
RNG(L) RNG( )
20 200
AUTO
M20-e-3.p65
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