Emerson Process Management 5300 manual Probe Selection Guide, Rigid Single Flexible Single Coaxial

Reference Manual

00809-0100-4530, Rev BA July 2009

Rosemount 5300 Series

PROBE SELECTION GUIDE

The following guidelines should be used to choose the appropriate probe for the Rosemount 5300 transmitter:

Table 2-1. Probe selection guide.

	Rigid Single			Flexible Single		Coaxial		Rigid Twin Lead		Flexible Twin
	Lead			Lead						Lead
G=Good
NR=Not Recommended
AD=Application Dependent
(consult your local Emerson
Process Management
representative)
				Measurements
Level		G			G		G		G		G
Interface (liquid/liquid)		G			G		G		G		G
			Process Medium Characteristics
Changing density		G			G		G		G		G
Changing dielectric(1)		G			G		G		G		G
Wide pH variations		G			G		G		G		G
Pressure changes		G			G		G		G		G
Temperature changes		G			G		G		G		G
Condensing vapors		G			G		G		G		G
Bubbling/boiling surfaces		G		AD			G		G		G
Foam (mechanical avoidance)	NR			NR		AD		NR		NR
Foam (top of foam measurement)	AD			AD		NR		AD		AD
Foam (foam and liquid	AD			AD		NR		AD		AD
measurement)
Clean liquids		G			G		G		G		G
Liquid with very low dielectric		G		G(2)			G		G	G(2)
constants, see also Table 2-4.
Coating/sticky liquids	AD			AD		NR		NR		NR
Viscous liquids	AD				G	NR		AD		AD
Crystallizing liquids	AD			AD		NR		NR		NR
Solids, granules, powders	AD				G	NR		NR		NR
Fibrous liquids		G			G	NR		NR		NR
			Tank	Environment Considerations
Probe is close (<12 in./30 cm) to	AD			AD			G		G		G
tank wall / disturbing objects
Probe might touch tank wall,	NR			NR			G	NR		NR
nozzle or disturbing objects
Turbulence		G		AD			G		G	AD
Turbulent conditions causing	NR			AD		NR		NR		AD
breaking forces
Tall, narrow nozzles	AD			AD			G	AD		AD
Angled or slanted surface		G			G	NR		AD		AD
(viscous or solids materials)
Liquid or vapor spray might touch	NR			NR			G	NR		NR
probe above surface
Disturbing Electromagnetic	AD			AD			G	AD		AD
interference in tank
Cleanability of probe		G			G	NR		AD		AD

(1)For overall level applications, a changing dielectric has no effect on the measurement. For interface measurements, a changing dielectric for the top fluid will degrade the accuracy of the interface measurement.

(2)Limited measuring range.

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