Pressure Systems 9022 Manual do Utilizador descarregar pdf (Página 141)

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Measurement Specialties, Inc. NetScanner System (9016, 9021, & 9022) User’s Manual

5 - 6

The following procedures should be used for replacement of the PC-206 Amplifier/Multiplexer

Board. Use the tools and follow the general precautions described in Section 5.1.1.

(1) Disassemble the module as described in Section 5.1.2. Carefully remove the wiring

harness from connector P1 of the PC-206 board. Note the orientation of the PC-206

relative to the rest of the module to ensure the new PC-206 is installed in the same position.

(2) Remove the two (2) Phillips-head screws securing the PC-206 board to the DH200

transducers. Carefully disconnect the PC-206 board from the DH200s by slowly working

the board off; starting at one end and moving down the length of the board. It is important

that the gold pins are not bent when removing the board.

(3) Replace the old PC-206 board with a new one by placing it loosely on top of the DH200s.

Ensure the board end containing connector P1 is oriented the same as the board just

removed. Inspect and make sure that all the gold pins fit easily into the female end of the

connector on the DH200 transducers. Press the board down evenly until all pins are

firmly seated.

(4) Install the two (2) Phillips-head screws to secure the PC-206 to the DH200s. Be careful

not to over-tighten. Install the wiring harness to connector P1 of the PC-206, ensuring

proper pin 1 location. (Pin 1 of the ribbon cable has a red stripe while pin one of P1

will contain a square solder pad on the PC-206.)

(5) Carefully align the gasket on the top plate, ensuring it is free of contaminants. Re-install

the module electronics into the extrusion case. Ensure that the alignment posts in the

module's bottom panel align with the PC-203 or PC-280 electronics support brackets when

placing the top panel and electronics back into the housing.

(6) Replace the screws that secure the top panel to the scanner housing and tighten. Do not

over- tighten; 7-9 inch-pounds torque should be sufficient.

(7) Test your scanner to ensure proper operation.

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Pressure Systems 9022 Manual do Utilizador Página 141