Contact Our Magnesonics Sales Team: 201-419-6111 or sales@nciweb.com

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Ordering Information

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Magnes-Sonic Float Operated Mercury-Free Tri-Magnet Level Switch

Retrofit your Magnetrol Level Switch with our Mercury-Free easy & economical field upgradeable Switch Mechanism

Replacement kits are available for a wide variety of switch manufacturers' upgrades. You can replace the switch and enclosure without removing the existing chamber. Upgrade Reliability, Technology, Performance, Local Service and Plant Safety quickly and easily.

Features: See Picture of Switch Assembly

Mercury-Free Design

Tri-Magnet Switching

Anti-Vibration Switch

Positive Snap Action Interlocking Switch with NO Cams or Springs

Sealed Cage

Flanged Cage

Refinery Piping Code

ANSI B16.5 Body Flanges

T316 Stainless Steel Trim

Positive Snap-Action

ANSI B31.1 & B31.3 Design

Operation:

The float or displacer drives a stainless steel sheathed permanent magnet attached to the float rod in the glandless pressure tube. As the float rises and falls with a changing liquid level the float assembly moves upwards inside the pressure tube. A switch mechanism is mounted inside the enclosure adjacent to the pressure tube, and is activated by the rising or falling magnet.

The vertical movement of the float magnet in the pressure tube simultaneously actuates the secondary and switch magnets within the switch mechanism, to operate the contacts. This threemagnet system enables the float magnet to pass the switch and actuate switch mechanisms at other levels. Switch mechanisms which are actuated will not reset until the float magnet actuates the switch mechanism on a falling level.

Switch Mechanism - Principle of Operation:

The switch mechanism is based on a unique Magnesonics three-dimensional magnet design where the snap action is accomplished by the utilization of magnetic repulsion. The magnet mounted on the float rod causes the secondary magnet to rotate as it passes up and down. The switch magnet is repelled by the secondary and snaps to the opposite side. This causes the cradle to pivot, moving the push rods which operate the switch contacts. The result is positive snap action interlock switching ... no springs ... no spring problems.

Choice of Switch Mechanisms
Type	Application
X4, X8	General Purpose - 10 amp mechanisms for general purpose duties up to 480° F
D4, D8	High temperature - 750° F mechanisms for high temperature applications up to 5 amps.
H4, H8	Hermetically sealed - Suitable for low temperature duties, contaminated atmosphere environments and intrinsically safe circuits. All moving parts and contacts enclosed in an inert gas filled stainless steel enclosure.
P4, P8	Low current - Gold plated contact switch mechanisms for use in intrinsically safe or low power circuits up to 750° F

The Float Chamber:

The flanged chamber construction of this X series range of vertical controls makes them a very serviceable level control solution for petrochemical, power generation and OEM applications.

The unique three-magnet memory latching system provides reliable switching for applications such as level alarm, safety shutdown and pump control in product storage tanks, gas scrubbers, process vessels, and high pressure steam generators.

Single or multi-switch models are available. Chambers are designed to ANSI 1331.1 Power Piping Code and ANSI 1331.3

Options:

Stainless Steel Chamber

Low temperature chamber below - 35° F

Certified to B31.3 or B31.1

Non-destructive testing - radiographic, ultrasonic

Epoxy paint finish

Extended NEMA 4 switch enclosure housing up to 6 SPDT switch mechanisms or 3 DPDT switch mechanisms

Vent connection

Specific gravity below 0.35

NACE specification MR-01-75 Rev. 84

CL. 1: Group B enclosures