Pressure Systems 9022 Uživatelský manuál stáhnout pdf (Strana 140)

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

5 - 5

5.1.2 Module Disassembly

The following procedure should be used to disassemble any model prior to any maintenance:

(1) Place the scanner with its external connectors facing up. With one hand holding the module

housing, remove all screws securing the top plate to the module housing. These are located

around the outer edge of the top panel of the module housing. For 9021 scanners these will be six

(6) 4-40 Allen-head screws which require a 3/32" Allen driver (for 9022 scanners, there are twelve

(12) Phillips-head screws). The 9016 uses twelve (12) Phillips head screws around the top plate

outside perimeter.

(2) When all screws have been removed, gently lift the top panel and attached electronics up and

out of the housing. All components of the pressure scanner are attached to the top plate and will

lift out of the module housing when the top plate is removed. See Figure 5.2 and 5.2a.

Carefully remove the Viton gasket with the module top plate. In some cases, it may be easier to

hold the top plate and turn the module over, lifting the housing off the top panel.

Figure 5.2

Figure 5.2a

9016 Scanner Out of Housing 9022 Scanner Out of Housing

5.1.3 Electronic Circuit Board Replacement

Different models of the NetScanner



System Intelligent Pressure Scanner use different

combinations of the six (6) basic circuit boards described below. To the right of each section title

are the modules that contain the particular circuit board assembly. Also refer to the cross

reference in Table 5.1 for a summary of applicable components in each Intelligent Pressure

Scanner.

5.1.3.1 PC-206 Amplifier/Multiplexer Board (9016)

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Pressure Systems 9022 Uživatelský manuál Strana 140