What if the sensor pad is sloped too much and the levelling feet can get the seismometer level?
Use some coins under the feet to prop it up. This solution is limited to 3-4 coins before the stack becomes unstable. Every effort should be made to construct the sensor pads with a level surface, and this is simply a trick to overcome an earlier bungle. (submitted 2/10/99) 4.2.6 One element of the Guralp seismometer does not seem to center, it is a) stuck in the same position or b) gets close to centered and then drifts away when the centering process quits. a) The sensor may indeed be stuck, try locking and unlocking it a couple times. If it is still stuck you may need to whack it. Please read the Guralp installation Field Note for more specific clues as to the problem and possible remedy. b) The sensor probably has a damaged pivot for which there is no field remedy. Contact the PIC for a replacement.
