Lightning Audio 7532 Commissioning, Radar Tank Gauge, Function medium property, Selection, DK er

Commissioning Radar Tank Gauge

Function "medium property" (003)

⇒

– + E

This function is used to select the dielectric constant.

Selection:
• unknown
• < 1.9
•	1.9 ... 4
•	4 ... 10
• > 10
	Product class	DK (er)	Examples
	A	1,4 … 1,9	non-conducting liquids, e.g. liquefied gas 3)
	B	1,9 … 4	non-conducting liquids, e.g. benzene, oil, toluene, …
	C	4 … 10	e.g. concentrated acids, organic solvents, esters, aniline,
			alcohol, acetone, …
	D	> 10	conducting liquids, e.g. aqueous solutions, dilute acids and
			alkalis

3)Treat Ammonia NH3 as a medium of group A, i.e. always use a stilling well.

50 Installation and Operations Manual