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Series_LS_Level_indicator_switch_&_transmitter

Series_LS_Level_indicator_switch_&_transmitter

Series_LS_Level_indicator_switch_&_transmitter

Product catalog summary
Overview: The document provides detailed specifications and operational guidelines for the Series LS level gauges, which are designed for measuring liquid levels in various industrial applications. These gauges are noted for their simple construction, resistance to extreme conditions, and leak-proof design.
Specifications:
  • Measuring range: 150 mm to 15 m
  • Accuracy: ±4 mm
  • Connections: EN 1092-1 or ANSI flanges, BSP or NPT threaded connections
  • Materials: Primarily EN 1.4404 (AISI 316L), with other materials available upon request
  • Local indication via external float in a glass tube or magnetic strips
  • Optional electronic transmitter with 4-20 mA output, compatible with HART, PROFIBUS, and FIELDBUS protocols
Working Principle: The level gauge operates using a float connected to a guide tube with an internal magnet assembly. This assembly moves along a chamber, adjusting its height based on the liquid level in a tank. The float is tailored to the specific liquid density, and the magnet assembly interacts with external indicators or electronic accessories for level indication.
Applications: Suitable for chemical and petrochemical industries, process industries, thermal plants, cryogenic installations, and storage facilities.
Models:
  • LS models: Indication via external float in a borosilicate glass tube, suitable for temperatures up to 400ºC
  • LSL models: Indication via bi-color magnetic strips, suitable for temperatures up to 250ºC
Technical Data:
  • Liquid density range: 0.55 to 2 kg/l
  • Working pressure: PN16 for AISI 316L models
  • Mounting: Top of the tank
  • Special design available for rods longer than 2000 mm
Limit Switches and Transmitters:
  • Various adjustable reed and micro-switches available, suitable for hazardous areas
  • Transmitters provide a 4-20 mA output proportional to liquid level, with options for safe and hazardous areas
Float Types and Materials: The selection of float types is based on application conditions such as liquid density and measurement height. The float diameter determines the minimum connection size for installation.
Mounting and Dimensions: Specific dimensions and mounting requirements are provided for different models, ensuring proper installation and operation.
Converters and Electronic Components:
  • TR series converters offer 4-20 mA output with various protocol options
  • MT03L electronic converter provides programmable inputs and outputs, with full diagnostics and optional password protection
Certifications: The product complies with ISO 9001, Pressure Equipment Directive 97/23/CE, and ATEX European Directive 94/9/CE standards.
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Catalog excerpts

Series_LS_Level_indicator_switch_&_transmitter-1

Level gauges Series LS Level indicator, switch and transmitter for liquids       Simple construction Resistant under extreme temperature and pressure conditions No risk of leakage Measuring range: from 150 mm to 15 m Accuracy: ±4 mm measured value Connections: - EN 1092-1 or ANSI flanges. Other flange standards on request (JIS,...) - BSP or NPT threaded connections Materials: EN 1.4404 (AISI 316L). Others on request Local indication: - By means of external float in a glass tube - By means of magnetic strips Options: - Switches - Electronic transmitter with 4-20 mA analog output for safe or hazardous area (Ex ia IIC T6 protection, ATEX certified). HART, PROFIBUS, FIELDBUS protocols available

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Series_LS_Level_indicator_switch_&_transmitter-2

Working principle glass tube indication, flanged connection A float connected to a guide tube with an internal magnet assembly on its side moves along a chamber, changing its height according to the level of a liquid inside a tank. magnetic strips indication, flanged connection glass tube indication, threaded connection magnetic strips indication, threaded connection The float is designed for the specific working liquid density. The internal magnet assembly couples with an external float or with a magnetic strips rail mounted externally and isolated of the level gauge chamber, providing an indirect...

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Series_LS_Level_indicator_switch_&_transmitter-3

Level gauges Series LS Float types The selection of the float for each application is made according to the specific application conditions, such as liquid density and height to be measured. The diameter of the selected float determines the minimum connection size required for the correct installation of the series LS level gauge as well. Please consult factory. Guide tube Internal magnet assembly External float Borosilicate glass

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Series_LS_Level_indicator_switch_&_transmitter-4

LMT: minimum distance necessary to remove the level gauge Series LS

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Series_LS_Level_indicator_switch_&_transmitter-5

Level gauges Series LS Limit switches Adjustable switch LT ... LTL-APR  SPDT bi-stable reed switch  IP65 polycarbonate housing  Contact rating: 0.5 A 220 VAC 60 VA  Hysteresis: ±6 mm  Liquid temperature: -20ºC ... 200ºC  Ambient temperature: -10ºC ... 70ºC  Suitable for hazardous area, considered as “Simple apparatus” Adjustable switch LT ... LTL-AAR  SPDT bi-stable reed switch  Aluminium housing & thermal separator for high temperature  Contact rating: 0.5 A 220 VAC 60 VA  Hysteresis: ±6 mm  Liquid temperature: -20ºC ... 400ºC  Ambient temperature: -10ºC ... 70ºC ...

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Series_LS_Level_indicator_switch_&_transmitter-6

 TR3420Ex hazardous area version ATEX Ex ia IIC T4 or T6 Transmitter composed of a resistive sensor based on a reed and resistances chain, mounted on a printed circuit placed inside a guide tube. Not wetted by the process liquid.  TR2420H (HART protocol), TR2420P (Profibus protocol) or TR2420F (Fieldbus protocol). Also available in combination with their Ex ia versions Variations in level inside the tank move the internal magnet assembly of the LS or LSL indicator, which by means of magnetic coupling changes the value of the resistance of the resistive sensor in correspondence to the measured...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.