Process Calibrators
Verification
47
5. Adjust the 5520A if necessary so that the current shown on the Fluke 8508A is the
same as the 5520A values shown in Table 67.
6. Verify that the display readings on the 717 Calibrator are within the limits.
Table 67. 717 mA Measure Verification
Fluke 5520A Fluke 717
4.0000 mA 3.998 mA to 4.002 mA
12.0000 mA 11.996 mA to 12.004 mA
24.0000 mA 23.993 mA to 24.007 mA
7. Disconnect the test leads and press O to turn the power off.
mA Loop Power Verification
1. Hold down both LOOP POWER keys ( U and O ) at the same until the screen
reads:
---------- LOOP mA
then release the keys.
2. Apply 1 kΩ to the mA jacks from the decade box or other resistor sources. The
display should read over 21 mA but less than OL.
3. Apply 2 kΩ to the mA jacks from the decade box or other resistor source. The
display should read between 11 mA and 13 mA.
4. Press
O to turn the power off.
Sensor Jack Verification
1. Make sure nothing is connected to the sensor port of the Fluke 717.
2. Turn power on. The display should read:
---------- mA
then change to:
0.000 PSI
3. Plug the Fluke Pressure Module into the sensor port on the Fluke 717. The display
should change to:
---------- mA
A pressure value should appear on the screen after all of the calibration constants
have been down loaded.
4. Disconnect the Fluke Pressure Module and press
O to turn the Fluke 717 off.
718 and 718Ex Verification
This procedure is appropriate for the 718 and 718Ex. When the steps vary, the step will
be labeled (718 Only) or (718Ex Only).
Pressure Verification
XWWarning
To avoid a violent release of pressure or vacuum, always
depressurize the system slowly using the pressure/vacuum
release control before detaching any pressure line.
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