Analog Output Accuracy - Keithley 2182 Service Manual

1-10 Performance Verification
5.
Table 1-4
Temperature measurement accuracy limits
Thermocouple
type
J, K, N, T
J, K, N, T
J, K, N, T
J, K, N
K, N
E
E
E
R, S
R, S, B
R, S, B

Analog output accuracy

Use the following procedure to verify accuracy of the analog output.
NOTE
1.
Verify temperature measurement accuracy for each of the temperature settings listed in
Table 1-4. For each measurement:
• Set the Model 2182 for the appropriate thermocouple type.
• Set the temperature calibrator to the correct thermocouple type and temperature
setting.
• Verify that the Model 2182 temperature reading is within the limits given in the
table.
Temperature calibrator
setting (°C)
-200
0
400
700
1300
-200
0
1000
0
400
1700
Be sure that DC voltage measurement accuracy is within required limits before
attempting this procedure.
With the power off, connect the Model 2182 CHANNEL 1 input jack to the DC voltage
calibrator, and connect the rear panel ANALOG output jack to the digital multimeter, as
shown in Figure 1-4.
Model 2182 temperature reading limits
(1 Year, 18°C-28°C)
-200.2 to –199.8°C
-0.2 to 0.2°C
399.8 to 400.2°C
699.8 to 700.2°C
1299.8 to 1300.2°C
-200.2 to -199.8°C
-0.2 to 0.2°C
999.8 to 1000.2°C
-0.2 to 0.2°C
399.8 to 400.2°C
1699.8 to 1700.2°C