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Level Measurement <br />What technique is used to measure changes in product volume? <br />directly measure the volume of product change <br />changes in head pressure <br />changes in buoyancy of a probe <br />mechanical level measure (e.g., ruler, dipstick) <br />changes in capacitance <br />(X ) ultrasonic <br />change in level of float (specify principle, e.g., capacitance, magnetostrictive, <br />load cell, etc.) <br />( ) other (describe briefly) <br />Temperature Measurement <br />If product temperature is measured during a test, how many temperature sensors are used? <br />single sensor, without circulation <br />single sensor, with circulation <br />2-4 sensors <br />(X') 5 or more sensors <br />temperature -averaging probe <br />If product temperature is measured during a test, what type of temperature sensor is used? <br />O resistance temperature detector (RTD) <br />bimetallic strip <br />quartz crystal <br />thermistor <br />X) other (describe briefly) Tem2erature is calculated from ultrasonic velocity. <br />If product temperature is not measured during a test, why not? <br />the factor measured for change in level/volume is independent of temperature <br />(e.g., mass) <br />the factor measured for change in level/volume self -compensates for changes <br />in temperature <br />other (explain briefly) <br />ATGS - Description Page 2 of 6 <br />