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JLT-6000 .IOMM.REV 001 (06.2007) WWW.JOGLER.COM PAGE 3
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Installation and Operating Manual JLT-6000
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1.0.0 Introduction
1.1.0 Forward
The Jogler JLT-6000 series transmitter represents the latest in magnetostrictive level transmitter
technology. Suitable for most liquid level applications, the JLT transmitter provides a very accurate and
reliable output for remote level control with zero maintenance. With greater ease of communication and
programmability, the JLT series contains the latest state-of-the-art electronics and sensor technology.
The JLT series is available in three different configurations; the ILT, LGT and MGT-6000 series. All
transmitters are factory calibrated to the specifications required with each order and installation.
The ILT-6000 series transmitter is designed for direct insertion into a storage tank, process
vessel or bypass chamber. The ILT can be top or bottom mounted and comes with a patented
thermo-well enclosure. As a result, the 316 SS waveguide probe of the transmitter is not exposed
directly to the process conditions since it is isolated within the thermowell. Only the thermowell
enclosure and level float are exposed to external process conditions. Remote mounted transmitter head
locations are available.
The LGT-6000 series transmitter is designed for installation directly into a liquid level sight
glass. The patented LGT design provides 100% confirmation between the liquid level in the gage and
the float position of the transmitter relative to the fluid level established in the sight glass. Top, bottom
or remote mounted transmitter head locations are available. The waveguide probe and float are
directly exposed to external process conditions in this configuration. The waveguide probe is not
exposed to internal process conditions.
The MGT-6000 series transmitter is designed exclusively for magnetic level indicators. The
waveguide probe is installed externally on the outside of the magnetic level gage chamber and is not
exposed to process conditions. Based on the level gage specifications, top, bottom or remote mounted
transmitter head locations are available.
1.2.0 Theory Of Operation
Magnetostrictive level transmitters operate in conjunction with a magnetic field that originates from a
liquid level float designed for the process media. A two wire waveguide probe of variable length is
connected to the transmitter sensor and electronic assembly. The two wire waveguide is housed within
a sealed ¼ inch (OD) sensor probe and receives a short current pulse at timed intervals. Disruption of
the waveguide is caused by torsion generated by the float’s lateral magnetic field at any elevation. This
torsion or deflection of the waveguide is detected by the transmitter sensor, which produces a very
accurate signal proportionate to the level elevation.