OPERATION MANUAL - Scintrex

Optimizing your Field OperationsTips for Better ResultsThe following are some hints for better instrument results:• Whenever the CG-5 is not being actively transported between stations byhand, vehicle or aircraft, even for 15 minutes or less, place it on its tripodand level it, within the range of the tilt meters until you are ready to make ameasurement. This is especially important for microgravity.Similarly the CG-5 should be leveled on its tripod overnight and wheneverit is not on survey to minimize hysteresis effects as reviewed inAppendix C. If the Autograv has been left off-level at rest for some hours ormore, it should be set up onto the tripod and left leveled for several hours(e.g. overnight) to stabilize before taking a measurement.• When necessary to replace the battery during the course of a long day, thentake a reading with the original battery, replace the original battery, wait 5 to10 minutes, and then repeat the previous reading. This will help determine ifthere has been a level shift (however small).• Ensure that you have recently updated the drift correction and adjustment asdescribed in “Applying Drift Corrections” on page 5-10.• Follow the same setup and reading routine at each station. For example, ifyou are transporting the Autograv by vehicle, take each reading atapproximately the same interval after the vehicle has stopped.• Where it is possible, select station locations that are on solid ground andaway from trees, bridges, poles or other potential sources of vibration.Transporting and HandlingThe Autograv case is waterproof and the instrument is designed to betransported between stations without the dust cover. The cover only needs tobe installed when the instrument is being shipped or when there is a danger ofthe front panel or control console being damaged.To get the best results from your Autograv and ensure a long working life,treat your instrument carefully. We recommend:• Avoiding shocks and jolts caused by hitting the instrument against rocks andtrees, etc. when taking the instrument out of vehicles and placing it on thetripod.• When transporting the instrument in a vehicle, place it on a compliantsurface, either a padded seat or a pad made from other shock absorbing4-2CG-5 Manual - part # 867700 Revision 2