Campbell Scientific CS110 Electric Field Meter - Manual (Page 62)

Appendix D. Servicing the CS110
'Program to open/close the CS110 shutter (CS110_Shutter1.cr1).
'Last updated by Jody Swenson on 9/26/05.
Public PTemp
Public Batt
Public stat(2)
DataTable(Efield,1,-1)
Sample(2,stat,FP2)
Sample(1,PTemp,IEEE4)
Sample(1,Batt,IEEE4)
EndTable
BeginProg
Scan(5000,msec,0,0)
PanelTemp(PTemp,250)
Battery(Batt)
CS110Shutter(stat(1),1)
'Fully open shutter.
Delay (0,3000,mSec)
CS110Shutter(stat(2),0) 'Fully close shutter.
CallTable Efield
NextScan
EndProg
D.6 Motor O-ring Seal
A double-seal O-ring is located on the motor shaft underneath the CS110 shutter
to help seal the CS110 case. Use Allen head screw-driver (PN: 17531) to
remove the 1
st set screw and loosen the second (primary) set screw in the shutter
hub, in order to access and replace the motor O-ring. The motor O-ring slides
on a UHMW washer for reduced friction and wear.
Apply a thin layer of Parker Super O-lube silicone base grease to PN 21759
O-ring. Wipe off excess. Install PN 21759 O-ring on shaft. Clean excess
grease off the shaft. After replacing the motor O-ring, the CS110 shutter is
installed to compress the O-ring. When replacing the shutter, line up the set
screw hole so that it is perpendicular to the flat surface on the motor shaft. The
shutter should then be compressed by applying a precise force. Campbell
Scientific part number TLS16061 is used to apply the precise force. A second
shutter hub set screw is used to prevent the primary shutter hub set screw from
working loose during operation.
Removal and replacement of the shutter from the motor shaft
necessitates a check and possibly re-trimming of the Index to the
fully closed position as described in Shutter/Encoder alignment.
Removal and replacement of the shutter also invalidates the
factory calibration because of possible dimensional differences
when reassembled.
NOTE
D-6