Maintenance
Manual 21568, Rev. F, March 2008
5.3
Sensor Element Replacement
This section describes how to disassemble the 80350A Peak Power Sensors, how to replace
sensor elements, and then to reassemble the Sensors. Refer to the diagrams on pages 7-3
through 7-7, as applicable, while performing the following steps.
CAUTION
The 80350A Sensor contains Static sensitive components. Use
proper techniques including wrist straps, anti-static mats, tools,
soldering irons, desoldering tools, and proper non-static clothing.
5.3.1
Disassembly of the Sensor
1.
Remove screws (1) and (2). Take off the sleeve holder plate and slide the sleeve off of
the cap assembly.
2.
Position the sensor so that the Analog PC Board (Assembly #21350) is visible, and
locate the sensor element leads. They are located on the end of the PC board nearest
to the sensor housing assembly. Remove the solder from the leads of the sensor
element, and remove the leads from the holes in the PC board. Straighten the leads.
3.
Remove the two PC boards.
4.
Unscrew the sensor housing assembly from the cap assembly. Use the wrench flats on
the Housing Assembly which are located closest to the cap assembly to remove the
Housing Assembly. The sensor element will stay attached to the Housing Assembly.
If the Spring Washers fall out when the sensor housing assembly is removed, they
should be replaced as shown in the diagram on page 7-5.
5.3.2
Replacing the Sensor Element
CAUTION
Removal of the sensor element invalidates EEPROM calibration
factors.
(Cal Factors can be verified with a Vector Network Analyzer using procedures similar to
standard power meter sensors.)
1.
Remove the old sensor element from the Sensor housing assembly by pulling the
element straight out from the assembly. Ensure that the center pin was removed with
the element. If not, carefully remove it with a pair of tweezers.
CAUTION
Do not twist the sensor element as it is being removed. Doing so
may damage the center conductor of the sensor housing assem-
bly.
Содержание 80350A
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