Description

เซ็นเซอร์วัดระดับ LTM Magnetostrictive มักใช้ในถังเก็บ คลังเชื้อเพลิง และถังฉีดสารเคมีเพื่อการวัดที่แม่นยำสูง

LTM Magnetostrictive level transmitters

LTM Magnetostrictive level transmitters offer accurate, safe and reliable continuous level indication and control in hazardous and non-hazardous applications. The LTM is a loop-powered 24VDC liquid-level transmitter available as a direct insertion transmitter or as an external mounted transmitter onto a Magnetic Level Indicator for non-invasive level control. The LTM’s design is customized to meet the process condition and communication protocol requirements and can be configured for liquid level or interface applications.

The LTM Magnetostrictive level transmitter operation is based on the principle of Magnetostrictive technology. The sensor consists of an alloy wire called the wave guide housed inside the stainless-steel tube, creating the probe assembly. The electronics generate a current pulse which travels down the length of the wave guide. When the pulse interfaces with the floats magnetic field, a torsional force is produced, sending a return back to the electronics. A timing circuit measures the time-of-flight and the distance to the float (level) is precisely determined and presented as a 4/20mA output signal.

LTM Magnetostrictive level sensors are commonly used in storage tanks, fuel depots, wet scrubbers and chemical injections tanks for their highly accurate measurement. Due to their design, these sensors are unaffected by changes in electrical characteristics, heavy vapors, emulsion layers, condensation or foam – conditions that challenge other level technologies.

Direction Insertion LTM transmitters, referred to as standalone (S) units, are available in two models – LTM-250S and LTM-350S. Both feature explosion-proof, dual compartment enclosures with integral displays and are CSA-US approved for Class 1 Div.1 Explosion Proof area installations.

LTM liquid level sensors offer the latest and most advanced software features on the market, including HART and FOUNDATION Fieldbus (LTM-350). The “plug-and-play” electronics allow easy upgrades from HART to Fieldbus without replacing the sensor probe. Optional remote mounted electronics up to 25’ are available for easy access or high temperature applications.