Pressure Systems 9022 - Manual (Page 145)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
www.PressureSystems.com 5 - 11
Figure 5.4
Top View of DH200
NOTE: The hex-head standoff screws used on DH200 positions 2 and 15 are used to
secure the PC-206. These hex-head screws should not be over-tightened or else the
screw may break. (Recommended 40 inch-ounces for all DH200 screws)
(1) Disassemble the module as described in Section 5.1.2.
(2) Remove the PC-206 Amplifier/Multiplexer board as described in Section 5.1.3.1. Lay
the circuit board aside on an anti-static surface.
(3) Remove the retaining screw from the desired DH200 transducer. Lift the transducer
straight up to remove it. Make sure that the two (2) O-rings remain with the transducer as
it is removed from the adapter plate. Ensure that the adapter plate O-ring sealing surface
is clean and free of contaminants. See Figure 5.4 (above).
(4) Replace the DH200, making sure that the electrical connections are located on the outer
edge of the cubic design. Be sure that the two (2) O-rings are in place on the DH200 and
that O-ring surfaces are free of contaminants. The DH200 must fit the guiding pins
smoothly and be aligned with all other DH200 transducers. Tighten the retaining screw
to 40 inch-ounces ±5 inch-ounces of torque.