Precision Process Calibrator
Performance Tests
21
To test the ohm input:
1.
Apply a four-wire short to the Product 4W RTD/
Ω
input.
2.
For the first test, set the Product to the 400
Ω
range.
3.
For the second test, connect the Product 4W RTD/
Ω
input to the output of the 5522A
as shown in Figure 8.
4.
Set the Product to the 400
Ω
range. Note the indication in Table 8.
5.
Set the Product to the 4000
Ω
range after the 400
Ω
test. Note the indication in
Table 8.
6.
Output the same nominal values and note the Product indication in the 7526A
Reading column of Table 8.
7.
Subtract the 5522A Actual Value from the 7526A Reading and ensure that it is
within the specified tolerance.
CURRENT
OUTPUT
HI
VOLTS
mA
RTD/
OUTPUT
HI
LO
HI
LO
LO
SENSE
4W RTD/
INPUT
20 V PK
MAX
100 V MAX
100 mA MAX
20 V PK
MAX
PRECISION PROCESS CALIBRATO
7526A
5522A
CALIBRATOR
Calibrator
7526A
gxm016.eps
Figure 8. Ohms Measurement Performance Test Connections
Summary of Contents for 7526A
Page 6: ...7526A Calibration Manual iv ...
