Filter
Top Products
Pressure Systems, Inc. 98RK-1 & 9816 User’s Manual©
Page 124 www.PressureSystems.com
5.1.6.1 DH200 Pressure Transducer O-Ring Replacement
Please note that the DH200 O-rings are used for static seals only. They will typically not require
replacement unless exposed to improper liquid media (which will also damage other 9116
components). Following is a step-by-step procedure to replace a DH200 O-Ring should it be
required:
(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 DH200 transducer(s) as described in Section 5.1.4. If more than one
DH200 is removed, it is recommended to record their serial numbers prior to removal to
ensure they are reinstalled in the same locations.
(4) Using tweezers, remove the two (2) O-rings from
the DH200. Clean the O-ring cup with a lint-free
applicator moistened with a cleaning fluid such as
acetone, alcohol, Freon, or any other substance
that evaporates quickly and leaves very little
residue. Remove any excess cleaner with the air
supply as soon as possible. Do not blow air
directly into the holes of the surface since that can
drive the fluid into the transducer and/or rupture
the silicon pressure transducer.
Figure 5.10:
DH200 Transducer O-Ring
Replacement
(5) With clean hands, apply a small amount of Krytox
®
fluorinated grease to the palm of one
hand and rub it out evenly with your index finger. Place one new O-ring onto your
greased palm. Work the O-ring around until it is evenly greased. The O-ring should shine
when properly lubricated. There should be no white area of excess grease on the O-ring.
Make sure there is only a thin film of lubrication on the O-ring. Using your greased finger,
place the greased O-rings in the cups on the DH200. Ensure that no grease enters the
hole that leads into the transducer.
(6) Reinstall the DH200 as described in Section 5.1.4
(7) Repeat steps 3, 4, 5 and 6 for each set of O-rings in need of replacement.
(8) Replace the PC-206 board as described in Section 5.1.3.1 and reassemble the module.
(9) Test your scanner to ensure proper operation.