Endress+Hauser Levelflex FMP51 - Product Description; Product Design and Components

Mounting Levelflex FMP51, FMP52, FMP54 PROFIBUS PA
16 Endress+Hauser
 probe  a [mm (inch)]  b [mm (inch)]
8 mm (1/3") < 14 (0.55) 8.5 (0.34)
12 mm (1/2") < 20 (0.78) 12.5 (0.52)
16 mm (0.63in) < 26 (1.02) 16.5 (0.65)
NOTICE
Poor grounding of the end of probe may cause measuring errors.
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Apply a narrow sleeve which has good electrical contact to the probe.
NOTICE
Welding may damage the main electronics module.
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Before welding: Ground the probe and dismount electronics.