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FMI51 PFM

Tank Level Gauging · Tank Level & Measurement

Class-certified type (DNV register) · technical data sheet not yet verified
Specifications

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Basic capacitance of the probeapproximately 18 pF
Additional capacitanceapproximately 1.3 pF/100 mm (3.94 in) in the air for a rod probe
Fully insulated probe rod in water• approximately 38 pF/100 mm (3.94 in) for ⌀ 16 mm (0.63 in) rod
Rod probe with ground tube• approximately 6.4 pF/100 mm (3.94 in) in air
Probe lengths for continuous measurement in conductive liquidsThe maximum length of the rod probe ≤ 4 m (13 ft) for capacitive range 0 to 2 00
Measuring frequency500 kHz
Span ΔC• recommended: 25 to 4 000 pF
Final capacitance CEmax. 4 000 pF
Adjustable initial capacitance CA• < 6 m (20 ft) 0 to 2 000 pF
Manufacturer documentation

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“Mount the probe at a minimum distance of 50 mm (1.97 in) from a conductive container wall: approximately 1.3 pF/100 mm (3.94 in) in the air for a rod probe Fully insulated probe rod in water: •…”

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