Preparation for Use
TP04100A
Interface
&
Applications
Rev
A:
0611
5/98
2-17
Thermocouples: Interfacing and
Attaching
1
2-
17.1
Overview
In general, there are two functional modes available in which to operate the TP04100A. Both modes allow
1
test setup and test running (for detailed explanations see Section 3, "Program Operation").
J
The two modes are 1) air mode (which uses the main airstream temperature as primary control), or
2)
DUT
mode (which uses the DUT temperature as primary control).
To operate in DUT mode requires the operator to interface a thermocouple sensor directly onto the DUT.
A
thermocouple
is a temperature measurement sensor that consists of
two
dissimilar metals joined together
at one end (a junction) which produces a small thermoelectric voltage when the junction is heated. The
change in thermoelectric voltage is interpreted by thermocouple thermometers as a change in temperature.
This Section explains:
a) How to
interface
(install) a thermocouple to the TP04100A and the related
tester fixture
socket (see
Section
2-17.2,
"Standard Thermocouple Interfacing")
b) How to
attach
a thermocouple to a DUT (see Figure 2-13 on page 2-36) by
alternative techniques
for
applications where standard sensor to DUT socket fixturing does not apply.
To
calibrate
a thermocouple, see Section
5,
"Verification" and "Calibration."
Page
2-30
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