THE Art of Level Instrument Selection

PRESENTED BY:ANISH DAS

General Review:

1. Common reasons for measuring level Inventory, Custody transfer, Efficiency, Safety, Consistent Supply

2. Units of measurement

3. Important terminologies Interface, Density, Specific gravity, Mass, Volume, Transmitter Datum

4. Device Characteristics

Continuous vs Single point, Bottom up vs Top down, Direct vs Indirect, Indication vs Control, Contacting vs Non contacting

5. Level Technologies

Manual/Mechanical, Electromechanical, Electronic Contacting, Electronic Non-Contacting

6. Device Selection

Level Technologies:

Determination of the right technology:

1. How does each type of level technology actually work?

2. In what conditions must the instrument perform?

3. What is the required accuracy and repeatability of the level reading?

4. Can the vessel be taken out of service for maintenance, and is there any way to independently verify the level for calibration?

5. What are the details of the vessel itself?

Table: Level Measurement Classification

Important points to be considered:

1. For what purpose is the level measurement needed?

2. What are the product characteristics?

3. What are the instrument requirements?

4. What is the total cost of the device?

Thank you