Siemens 200 instruction manual P801 Range Extension, P802 Transducer with Submergence Shield

Parameters

P801 Range Extension

Allows the material level to fall below the Empty setting without reporting LOE.

Primary Index		Single Point Model	Dual Point Model
	Global		Transducer
	Range: 0.000 to 99.00 m, or max. span (P007), or equivalent
Values	depending on units
	Preset: 20% of Span (P007)
	•	P005 Units
Related	•	P006 Empty
	•	P007 Span
	•	P004 Transducer

This feature is useful in OCM applications where the Empty level is set to the bottom of the weir, and above the bottom of the channel, and should be used if the surface monitored can fall past the Empty (P006) level in normal operation. The value is added to Empty (P006) and can be greater than the range of the transducer. If the surface monitored can extend beyond Empty (P006), increase Range Extension (in Units (P005) or

%of Span) such that Empty plus Range Extension is greater than the transducer face to furthest surface to be monitored distance. This is often the case with OCM when using weirs and some flumes.

P802 Transducer with Submergence Shield

Used when the transducer is expected to be submerged on occasion.

Primary Index		Single Point Model			Dual Point Model
	Global				Transducer
Values	0		*	Off
	1			Submergence transducer
	•		P006 Empty
Related	•		P071 Failsafe Material Level
	•		Relays

When a transducer with a submergence shield is submerged, the shield traps an air pocket that creates a special echo. The MultiRanger recognizes the echo and advances the reading to the highest level and operates displays and outputs accordingly. This feature is effective for when power is returned while the transducer is submerged.

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