Name: LEG-100 Digital Explosion-Proof Magnetostrictive Level Transmitter
Brand: DOWESTON

LEG-100 Digital Explosion-Proof Magnetostrictive Level Transmitter

Principle: ■ When the sensor of the magnetostrictive level gauge is working, the circuit par...

Factory Direct
Chengdu production base, every unit calibrated before shipping

Fast Delivery
Standard models in stock, custom builds on schedule

Technical Support
Selection guidance / installation and commissioning / after-sales support

Brand: DOWESTONWarranty: 12 monthsOEM / customization supported

Product Overview

OVERVIEW

Principle:

■ When the sensor of the magnetostrictive level gauge is working, the circuit part of the sensor will excite a pulse current on the waveguide wire. When the current propagates along the waveguide wire, a pulse current magnetic field will be generated around the waveguide wire. There is a float outside the sensor rod of the magnetostrictive liquid level meter. This float can move up and down along the rod as the liquid level changes. There is a set of permanent magnetic rings inside the float. When the pulse current magnetic field meets the magnetic ring magnetic field generated by the float, the magnetic field around the float changes, causing the waveguide wire made of magnetostrictive material to generate a torsional wave pulse at the position of the float. This pulse is transmitted back along the waveguide wire at a fixed speed and is detected by the detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of the float, that is, the position of the liquid level, can be accurately determined.

Features

FEATURES

Features:

■ Strong reliability: Since the magnetostrictive level gauge adopts the waveguide principle and has no mechanical movable parts, it has no friction and no wear. The entire converter is enclosed in a stainless steel tube and has no contact with the measurement medium. The sensor works reliably and has a long life.

■ High accuracy: Since the magnetostrictive liquid level meter works with waveguide pulses, the measured displacement is determined by measuring the time of the start pulse and the end pulse. Therefore, the measurement accuracy is high, and the resolution is better than 0.01% FS. This is an accuracy that is difficult to achieve with other sensors.

■ Good safety: The magnetostrictive liquid level meter has high explosion-proof performance, is intrinsically safe and safe to use, and is especially suitable for measuring chemical raw materials and flammable liquids. There is no need to open the tank lid when measuring, avoiding the unsafety of manual measurement.

■ Magnetostrictive level gauges are easy to install and maintain: Magnetostrictive level gauges are generally installed through existing pipe openings on the top of the tank. They are especially suitable for the installation of underground storage tanks and storage tanks that have been put into operation, and can be installed without affecting normal production during the installation process.

■ Facilitates system automation: The secondary instrument of the magnetostrictive liquid level gauge uses a standard output signal, which facilitates signal processing by a microcomputer, facilitates networking, and improves the automation of the entire measurement system.

Specifications

SPECIFICATIONS

■ Measuring range: 0-25000mm

■ Accuracy: ±0.3mm

■ Resolution: 0.1mm

■ Input: 0-5V, 1-5V, 0-10V;

4-20mA (two/three-wire system), 0-10/20mA, 0-5V

■ Communication: RS-485, RS-232, Modbus, Hart and other protocols, can be equipped with CAN bus or according to user requirements.

■ Display: LED on-site display, on-site programmable

■ Input voltage: 12-36Vdc

■ Load impedance: RL(Max)=50(Vs-8)

■ response time:<2ms (10...90%FS)

■ Comprehensive accuracy: ±0.1%

■ Repeatability: ≤± 0.1%FS/year

■ Adjustment range:Span Adjustment 20%FS

Zero Ajustment 5%FS

■ Material: Guide rod and float: stainless steel 304, 316L, PTFE, PVDF, PP

Transmitter housing: die-cast aluminum/aluminum alloy

flange: stainless steel

■ Process connection: DN50 flange connection, threaded connection G2

■ Overload pressure: 5bar

■ Burst pressure: 10bar

■ Ambient temperature: -25℃~70℃

■ liquid temperature: -25℃~150℃

■ Ingress protection: electrical section IP65

■ Electrical connection: direct wiring, 1/2NPT, terminal wiring, M20*1.5 screw hole for connecting cable tube.

■ Sealing: fluorine rubber

Application Areas:

■ LG-300 float continuous liquid level gauge is suitable for water treatment control equipment, electrical industry, ship hydraulic equipment, hydraulic and hydropower, chemical industry, petrochemical industry equipment and thermal coal boilers, etc. (For liquid measurement with liquid density ≥0.75g/cm³)

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