Thermocouple Simulation
MC4 User Guide
63
Thermocouple Simulation
In
thermocouple
simulation
the
original
thermocouple
is
disconnected from the instrument under test and replaced with MC4.
MC4 mimics a thermocouple at given temperatures. To the
instrument under test MC4 appears as a thermocouple at the given
temperature.
Function:
T/C Sensor Simulation
Check the
Sensor
setting. Make sure you select the same sensor
type than what is required by the instrument under test. Otherwise
your measurement results are unreliable.
Also select a suitable Reference Junction compensation method
from the
RJ Mode
list. Wrong reference junction setting results in
useless measurement results. Additional information about
Reference Junction compensation methods can be found in chapters
Internal Reference Junction
on page 113 and
External Reference Junction
on page 114.
The adjacent picture displays the
active terminals:
M e a s u r e
M a x 6 0 V , 3 0 V , 1 0 0 m A
T / C
m V
s e n s e
R , R T D
R m e a s
V , I
,
V , I
,
T e m p e r a t u r e / G e n e r a t e
By default the additional info row at the bottom of the window
displays either the thermovoltage corresponding to Reference
Junction temperature 0°C (when
Unit
field is set to temperature) or
the thermovoltage with Reference Junction compensation taken into
account (when
Unit
field is set to "V RJ"). In both cases also
the Reference Junction temperature is shown. More of additional
info row on page 90.
Notes.
If the resistance of the external circuit in thermocouple simulation is
very low (obvious short circuit), the message "
Overload
" is
displayed until the load is reasonable.
If the thermocouple to be simulated is not available MC4's sensor
list, select one of the "
V
oltage
+ R
eference
J
unction
" units and
convert from temperature to millivolts manually. Also select a
thermocouple type from the
Sensor
list that approximately matches
your sensor (in used Reference Junction range). This allows MC4 to
perform Reference Junction compensation as accurately as
Содержание MC4
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