Pressure Systems 9816 Manuale Utente

Pressure Systems, Inc.                                                                              98RK-1 & 9816 User’s Manual© 
 
 

 

Page 124 

 

www.PressureSystems.com 

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) 

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.