What's the Right Level Technology for Your Application?

Need help figuring out which level measurement instrumentation to use in your process? Start with the charts below. Find your media type, process conditions and tank design to help narrow down your choices.

Depending on your application, there may be more than one technology for you. If you're still not sure what you need, fill out a Level Application Datasheet (64K Adobe PDF) and fax it to Lesman at 630-595-2386 for an engineering review.

| Point Level | Continuous Level |

Key
Excellent. Recommended. Excellent! Recommended Works, but Other Technologies are Better Fair. Works, but others are better.
Good, Works in Most Cases Good. Works in most cases. Poor! Do not use. Poor. Do not use.

Point Level Technologies

Media Properties Floats Rotary
Paddle		 Vibratory
Fork		 Capacitance Ultrasonic
Liquids - Clean Good, Works in Most Cases Poor! Do not use. Poor! Do not use. Excellent. Recommended. Excellent. Recommended.
Liquids - Coating Poor! Do not use. Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Excellent. Recommended.
Slurries Poor! Do not use. Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Excellent. Recommended.
Liquid/Liquid Interfaces Poor! Do not use. Poor! Do not use. Poor! Do not use. Excellent. Recommended. Poor! Do not use.
Liquid/Solid Interfaces Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use.
Solids - Low Dust Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases
Solids - High Dust Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Poor! Do not use.
Process Environment
Vapors Good, Works in Most Cases Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Poor! Do not use.
Foam Works, but Other Technologies are Better Poor! Do not use. Poor! Do not use. Works, but Other Technologies are Better Poor! Do not use.
Temp > 350°F Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use.
Pressure > 50 PSI Good, Works in Most Cases Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Poor! Do not use.
Vacuum Good, Works in Most Cases Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Poor! Do not use.
Turbulence Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases
Tank Design and Structural Properties
Agitators Poor! Do not use. Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases
Obstructions Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases

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Key
Excellent. Recommended. Excellent! Recommended Works, but Other Technologies are Better Fair. Works, but others are better.
Good, Works in Most Cases Good. Works in most cases. Poor! Do not use. Poor. Do not use.

Continuous Level Technologies

Media Properties Load Cells Bubbler Head
Pressure		 Magneto-
strictive		 Capacitance Ultrasonic Radar
Liquids - Clean Excellent. Recommended. Excellent. Recommended. Excellent. Recommended. Excellent. Recommended. Excellent. Recommended. Excellent. Recommended. Excellent. Recommended.
Liquids - Coating Excellent. Recommended. Poor! Do not use. Works, but Other Technologies are Better Poor! Do not use. Good, Works in Most Cases Excellent. Recommended. Excellent. Recommended.
Slurries Excellent. Recommended. Poor! Do not use. Good, Works in Most Cases Poor! Do not use. Good, Works in Most Cases Excellent. Recommended. Excellent. Recommended.
Liquid/Liquid Interfaces Poor! Do not use. Poor! Do not use. Poor! Do not use. Excellent. Recommended. Excellent. Recommended. Good, Works in Most Cases Poor! Do not use.
Liquid/Solid Interfaces Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use. Excellent. Recommended. Poor! Do not use.
Solids - Low Dust Works, but Other Technologies are Better Poor! Do not use. Poor! Do not use. Poor! Do not use. Works, but Other Technologies are Better Excellent. Recommended. Works, but Other Technologies are Better
Solids - High Dust Works, but Other Technologies are Better Poor! Do not use. Poor! Do not use. Poor! Do not use. Works, but Other Technologies are Better Poor! Do not use. Excellent. Recommended.
Liquid - Shifting Specific Gravity Poor! Do not use. Poor! Do not use. Poor! Do not use. Poor! Do not use. Excellent. Recommended. Excellent. Recommended. Excellent. Recommended.
Dielectric < 2 Excellent. Recommended. Good, Works in Most Cases Works, but Other Technologies are Better Good, Works in Most Cases Poor! Do not use. Excellent. Recommended. Good, Works in Most Cases
Shifting Dielectric Excellent. Recommended. Good, Works in Most Cases Excellent. Recommended. Good, Works in Most Cases Poor! Do not use. Excellent. Recommended. Poor! Do not use.
Process Environment
Vapors Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases Poor! Do not use. Excellent. Recommended.
Foam Works, but Other Technologies are Better Works, but Other Technologies are Better Good, Works in Most Cases Excellent. Recommended. Poor! Do not use. Poor! Do not use. Poor! Do not use.
Temp > 350°F Excellent. Recommended. Good, Works in Most Cases Good, Works in Most Cases Poor! Do not use. Good, Works in Most Cases Poor! Do not use. Excellent. Recommended.
Pressure > 50 PSI Excellent. Recommended. Poor! Do not use. Good, Works in Most Cases Excellent. Recommended. Good, Works in Most Cases Poor! Do not use. Excellent. Recommended.
Vacuum Excellent. Recommended. Poor! Do not use. Good, Works in Most Cases Excellent. Recommended. Good, Works in Most Cases Poor! Do not use. Excellent. Recommended.
Turbulence Excellent. Recommended. Works, but Other Technologies are Better Good, Works in Most Cases Works, but Other Technologies are Better Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases
Tank Design and Structural Properties
Agitators Excellent. Recommended. Works, but Other Technologies are Better Good, Works in Most Cases Works, but Other Technologies are Better Poor! Do not use. Good, Works in Most Cases Good, Works in Most Cases
Obstructions Excellent. Recommended. Works, but Other Technologies are Better Good, Works in Most Cases Works, but Other Technologies are Better Good, Works in Most Cases Good, Works in Most Cases Good, Works in Most Cases

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