Keithley 2010, Service Manual, Page: 26 / 134

RTD temperature
1. Connect the precision decade resistance box (listed in Table 1-1 ) to the Model 2010
INPUT and SENSE jacks using 4-wire connections. (See Figure 1-1 for a similar
connecting scheme.)
2. Configure the Model 2010 temperature function for °C units and RTD temperature
sensor (
α
=0.00385) as follows:
A. Press SHIFT then SENSOR, and note the unit displays the temperature units:
UNITS: C.
B. Press ENTER, and note the unit displays the sensor type: SENS: TCOUPLE.
C. Using the cursor and range keys, set the display as follows: SENS: 4W-RTD.
D. Press ENTER, and note the unit displays: TYPE: PT100.
E. Using the cursor and range keys, set the unit for the following display: TYPE:
PT385.
F. Press ENTER to complete the temperature configuration process.
3. Select the temperature function by pressing the TEMP key.
4. Set the decade resistance box to each of the values shown in Table 1-8 , and verify that
the temperature readings are within the required limits.
Table 1-8
Four-wire RTD temperature verification reading limits
Applied resistance*
Reading limits (°C)
(1 year, 18°C–28°C)
22.80
Ω
100.00
Ω
313.59
Ω
-190.14 to -189.86°C
-0.08 to +0.08°C
599.86 to 600.14°C
* Based on a = 0.00385. See text.
Performance Verification 1-13