Campbell Scientific CS110 Electric Field Meter - Manual (Page 47)

CS110 Electric Field Meter
2. Inspect the gasket on the CS110 lid making sure that a good seal is
possible when the lid is replaced.
3. Remove the old desiccant pack and replace with a new 4 unit desiccant
pack (PN: 4905) making sure the new pack is placed into the bracket that
prevents the desiccant from sliding into the motor assembly.
10.6 Checking Shutter/Encoder Alignment
Status codes 14, 15, and 16 indicate problems with the stepper motor correctly
opening and closing the shutter. A mechanical trim procedure is done at the
factory to set proper shutter/encoder alignment, as described in Appendix D.
Proper shutter/encoder alignment can be verified with the following procedure
utilizing the special CS110Shutter instruction which positions the shutter in
the fully closed or fully open positions. The following program combines the
CS110Shutter instruction with Delay instructions so that fully closed and fully
open shutter positions can be verified visually. Stator to shutter overlap exists
in the fully opened and fully closed positions so that slight shutter position
variations do not alter the exposed area to the sense electrode. A fully opened
shutter will display symmetrical stator to shutter overlap, within the 1.8
°
stepper motor step size, on both edges of each of the 4 openings in the stator
when viewed from a perpendicular position to the direction of the shutter
blades. No visible gaps between the stator and shutter blades should be visible
on a fully closed shutter when viewed from a position perpendicular to the
shutter blades.
'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
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