Measurement Specialties 9116 Manual Do Utilizador

Pressure Systems, Inc.                                                                                        Model 9116 User’s Manual 
 
 

 

Page 112 

 

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-327 Analog 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 5.6 

 
(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-327 Analog board as described in Section 5.1.3.1 and reassemble the 

module. 

 
(9)  Test your scanner to ensure proper operation.