Level measurement

Instrument selection within the measuring principle

67

L 500mm/20"

Instructions for Endress+Hauser UNI flanges in FMR54/FMR532/NMR84 • Endress+Hauser UNI flanges are designed with a pitch circle diameter compatible with DIN, ANSI and JIS counter flanges • UNI flanges have been designed for unpressurized operation or atmospheric pressure (1bar/14.5psi absolute pressure). The number of flange bolts has been partly reduced

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Recommendations for stilling wells • Metallic (without enamel coating, plastic upon request) • Constant diameter • Hole diameter max. 1 /

7 of pipe diameter and not bigger than 30mm/1.2"

• Spacing between holes min. 30cm/12" • For FMR54/FMR532/NMR84 (planar antenna) a gradual widening

have a minimum length of 500mm/20" prior to the widening. Length (L)

• length (L) of the widening amounts to 450mm/18" • Ideally, a gauge nozzle is used as upper pipe end • Rectangular pipe widening is not permitted