PRINCIPAL OF SERVO MEASUREMENT
Part No.: 4417340 Revision 1 Service Manual 15
954 SmartServo FlexLine
The original servo gauge does not look much like today's modern
version. The instruments have evolved into highly reliable mature
products, and are gradually replacing mechanical float gauges, cutting
down on maintenance and improving on inventory results. Modern
intelligent servo gauge shave very few moving parts, resulting in long
term reliability and accuracy. They also have a high degree of data
processing power. The instruments do not merely measure the liquid
level but are also capable measuring interface levels and product
density. Accurate, programmable level alarms are standard. Accuracy's
of better than 1 mm (1/16 inch) over a 40 m (125 ft) range can be
attained. The exceptional accuracy and reliability has resulted in the
acceptance of the measurements and remote transmission, by Weights
& Measures and Customs & Excise authorities in many countries.