E4 Modulevel® liquid level transmitter
The E4 Modulevel® is a loop powered, two-wire instrument, utilizing simple buoyancy principles to detect and convert liquid level changes into a stable output signal. The linkage between the level sensing element and output electronics provides a purely mechanical design and construction. The vertical in-line design of the transmitter results in low instrument weight and simplified installation. The instrument comes in a variety of configurations and pressure ratings for varied applications.
The E4 Modulevel has microprocessor-based electron-ics with 4–20 mA/HART® digital output. E4 supports the FDT/DTM standard and a PACTware™ PC software pack-age allows for additional configuration, diagnostics, and trending capabilities.
Technology
Displacer transmitter
Electronic displacer level transmitter technology operates by detecting changes in buoyancy force caused by liquid level change. These forces act upon the spring supported displacer causing vertical motion of the core within a linear variable differential transformer.
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Features
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Applications
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Operating principle
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Approvals
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Downloads
- Safety Integrity Level (SIL) 2 Capable
- No calibration required; configuration only
- Available with 4–20 mA and HART® 7 with PACTware™ PC software and the Field Device Tool (FDT); AMS ready
- NAMUR NE 107 diagnostic coverage
- Range spring suppresses effects of turbulence to produce stable output signal
- Full range of hazardous location approvals with international certifications
- Order entire Modulevel or retrofit the latest transmitter onto existing displacer assemblies
- In additional to total level, suitable for interface measurement or specific gravity output
Options
- Full Modulevel (with displacer assembly)or transmitter-only
- External chambers/cages
- Integral or remote mount with aluminum or stainless steel enclosures
- Specific gravity range from 0.23 to 2.20
- Industrial, ASME B31.1, ASME B31.3, and NACE constructions available
As the core position changes with liquid level, voltages are induced across the secondary windings of the LVDT. These signals are processed in the electronic circuitry and used to control the current in the 4-20 mA current loop. The enclosing tube acts as a static isolation barrier between the LVDT and the process media.
| ATEX | Ex db, Ex ia, Ex ic |
|---|---|
| FM (US/CA) | XP, IS, NI |
| IEC |
Ex db, Ex ia, Ex ic |
| SIL |
SIL 2 (1oo1) |
| IP | IP 66, IP67 |
| UKCA | Ex db, Ex ia, EX ic |
Other approvals are available. Consult factory for more details.
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Approvals and certificates
API 2350 Overfill Prevention
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Instruction manuals
Chemical Processing
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Product catalogs
Food and Beverage
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