Protect Pumps with In-Line Fluid Detection

The Problem
• Progressing cavity pumps are used for transporting heavy slurries and fluids with high solid content.
• These pumps require a constant supply of fluid for lubrication.
• If the pump runs dry, the internal components and motor can be damaged requiring expensive repairs and costly downtime.
• Most level switches used to indicate a loss of fluid require insertion into the flow stream, which contributes to plugging.
• Coatings and damage from solids will cause most level switches to fail.

The Solution
• The Drexelbrook ClearLine level switch mounts flush with the inside of the pipe and does not interfere with the free flow of fluid.
• Sensors are robust, industrial designs to stand up to this punishing installation.
• There are no moving parts to wear out or hang up.
• Cote-Shield circuitry eliminates false alarms due to coatings.
• ClearLine level switches are pre-calibrated at the factory and are not affected variations in density or conductivity.

Related products

Magnetrol

Displacer switches – single, dual and tri-switch series

Single-Stage Switches

Series A10 displacer type level measurement units are wide differential units calibrated to actuate as a liquid level reaches a given displacer and to deactuate when the level reaches a second displacer. Single stage, wide differential displacer switches are factory calibrated yet field-adjustable to operate over a wide level differential band.

The minimum differential band is approximately 6 inches (152 mm) in water and varies somewhat with liquid specific gravity. The maximum differential is determined by the length of the displacer suspension cable. Series A15 units are calibrated to operate over a narrow level differential band and are ideally suited for liquid level alarm applications on either high or low level.

Dual-Stage Switches

Series B10 displacer type level measurement units are wide differential tandem switches that are factory calibrated with a choice of several switch operating sequences designed to meet virtually any application.

Series B15 units are narrow differential tandem switches that are factory calibrated. Each switch actuates at a different level.

Tri-Stage Switches

Series C10 displacer type level measurement units utilize three electrically separate control signals in a selected sequence in response to liquid level changes.

Series C15 units are wide differential switches with a choice of several operating sequences combining wide and narrow level differential and are factory calibrated.

Magnetrol

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 electronics with 4–20 mA/HART® digital output. E4 supports the FDT/DTM standard and a PACTware™ PC software package allows for additional configuration, diagnostics and trending capabilities.

Other applications

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