PROJECTEnquire ↗Tanks and storage operations
Level, volume, temperature and liquid interfaces answer different operating questions. A suitable system turns them into information that the plant can use.
Operating context
A storage tank may need an individual instrument or a tank-gauging assembly with local indication and a supervisory-system interface. Converting level into inventory requires tank data and, depending on the purpose, temperature, density or pressure measurements.
Engineering priorities
Radar, guided-wave or hydrostatic measurement is selected around vessel geometry and the product. Foam, deposits, agitation and headspace pressure influence performance. Measuring an interface between two liquids requires its own application assessment.
Glass or magnetic level gauges provide a local reading. Connection centres, visible range, materials and access belong in the design. Float selection must take account of liquid density and operating conditions.
Volume calculations require geometry or a tank table. Inventory management, process alarms and overfill protection have different requirements. A shared display does not by itself demonstrate that a protective function has been achieved.
Supply boundaries
Before engineering
Agreed with the proposal
The actual scope and acceptance criteria depend on the application and contract.
Selection in context
Tank geometry, fluid properties and process conditions drive selection; process level measurement and overfill protection need specifications appropriate to their different functions.
On a small screen, scroll the table sideways to compare the selection criteria.
| Principle or option | Typical application | What to verify when selecting |
|---|---|---|
| Non-contact radar | Continuous measurement of distance to the surface without an immersed probe. | Nozzle and beam alignment, internal obstructions, medium reflectivity, foam, condensation and antenna contamination.[1] |
| Guided-wave radar | Level measurement along a probe; liquid interfaces where media and configuration permit. | Dielectric properties of each layer, probe length and support, buildup, emulsion and measuring limitations near probe ends.[1] |
| Hydrostatic or differential pressure | Liquid column height inferred from pressure near the bottom of a tank. | Density and its variation, pressure above the liquid, tap elevations, fouling and temperature effects on a remote-seal assembly.[2] |
| Magnetic float level indicator | Local visual level indication using a float in a bypass chamber. | Fluid density for the float, pressure and temperature, chamber materials, open connections, and provisions for isolation and cleaning.[3] |
| Sight-glass level gauge | Direct local level viewing; a transparent design may also reveal colour or a liquid interface. | Glass and gasket design for the medium, lighting, deposits, temperature changes and safe maintenance access.[4] |
Reviewed on 18 October 2026. Selection is confirmed for the specific operating conditions and equipment design.
Relevant experience
Project 421 · Measurement & instrumentation
Delivery region: Middle East · 2024
24 guided-wave radar level transmitters for a chemical process, including cable-probe components and flanges.
Broader project portfolioInstrument and component supply
Connected disciplines
Related technologies
Before we start
Volume can be calculated from level when the height-to-volume relationship is known. The quality of that information contributes to the accuracy of the result.
Often, but their position, bore, spacing and condition must suit the selected principle. Drawing review and a site survey determine what can be reused.
After verifying the exact configuration and the condition of the body, joints and seals. Glass type and any protective layer must match the service conditions and manufacturer instructions.
Your next project
Send your drawings, operating parameters or a short description of the change you need. We will review the technical interfaces and propose the next steps towards a quotation, clarifying any missing information with you.
Discuss your requirements ↗Prepare a technical brief →+420 731 771 147info@emkoproject.cz