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→Operating limitations
==Operating limitations==
==Operating limitations==
The gravity meter itself is a delicate spring balance that measures changes in weight of a small proof mass. The meter must be leveled at each station, and it is accurately thermostatted at a temperature of about 126ΰC. The present LaCoste and Romberg meter cannot operate in a wellbore deviated from vertical by more than 14°. Table 1 shows a summary of maximum operating conditions for the meter.
The gravity meter itself is a delicate spring balance that measures changes in weight of a small proof mass. The meter must be leveled at each station, and it is accurately thermostatted at a temperature of about 126°C. The present LaCoste and Romberg meter cannot operate in a wellbore deviated from vertical by more than 14°. Table 1 shows a summary of maximum operating conditions for the meter.
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