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Title: Pocket Size Chart Drive Battery Tester
Author: D. R. Fulton
Source: American Gas Association 1979
Year Published: 1979
Abstract: One of the most aggravating things to find is a partial chart record of metered volume or in the case of a recording gauge, the pressure or temperature hasnt been recorded for the last several days or weeks. Closer inspection finds that the battery powered clock or chart drive has slopped. Was it a faulty battery? Did the power pack develop a short? Was the battery too weak when it was first installed? In the past, perfectly good docks have been removed for repair because they have stopped during cold weather. Most clock stoppage occurs on the coldest uay of the season but it isnt always the clocks fault. The batter or the power pack could be the cause of the clock failure and just when the chart record is needed the most for a good indication of what the line pressure was in a distribution system or what the high flow conditions were through the gas meter, the recording chart stopped. Often times the clock was not at fault, it could be that the battery just didnt have enough power when the ambient temperature reached record lows, so the clock didnt rewind itself.

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