4.15-2 Section 4: Using the Model 9100: RTD Temperature Function
Final Width = 215mm
4.15.2 Selection of RTD Temperature Function
4.15.2.1 'Aux' Key
Temperature is an 'Auxiliary' function. The Auxiliary menu screen is selected by pressing the
'Aux' key at the right of the
'CALIBRATION SYSTEM' panel. Temperature is selected by pressing the °C screen key on the bottom row.
4.15.2.2 Default Settings
At power-on, the system defaults into DC Voltage function. Each time the 'Aux' key is pressed, the system defaults into Auxiliary
function.
Whenever the Temperature menu screen is opened from a non-temperature function by pressing the °C screen key on the Auxiliary
menu screen, the Thermocouple screen will appear with 'K Type' selected.
RTD is selected via the Thermocouple menu screen by pressing the RTD screen key on the bottom row. Unless changes were made
in Thermocouple function before selecting RTD, the RTD menu screen will appear with the following default settings:
Once entered into a temperature function, switching between Thermocouple and RTD function will retain the selected unit of
temperature (°C, °F or K) and the selected temperature scale (IPTS-68 or ITS-90).
If the unit or scale is changed by screen keys, the new selection will persist until a non-temperature function is selected. Then
subsequent reselection of the RTD function, without changes in Thermocouple function, will revert to the default shown above.
4.15.2.3 RTD Nominal Resistance and Conformance Curve
The system defaults to provide parameters which simulate a platinum-resistance thermometer whose 0°C nominal value is 100Ω,
conforming to the European curve PT385, and using the temperature scale IPTS-68. The nominal value is shown on the screen,
and can be adjusted between 10Ω and 2kΩ using the normal digit and direct editing methods described in Section 3.
The simulation can be made to conform to a second curve, the US PT392. This can be selected using the RTD TYPE key as described
in paras 4.15.3.3.
TODAYS DATE TIME
x
÷
U
U
T
i
+
25.
°C
±
° F
K
PT
385
RTD
TYPE
CHANGE
CURRENT
THERMO
COUPLE
TEMP
SCALE
4 WIRE
I P T S - 6 8
NOM=
.
Ω @
°C
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