Series_LT_Level_gauges
8Pages

Level gauges Series LT Level indicator, switch and transmitter for liquids        Simple construction Resistant under extreme temperature and pressure conditions No risk of leakage Excellent chemical resistance 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 - Sanitary couplings according to ISO 2852, SMS 1145, DIN 11851, TRI-CLAMP® Materials: EN 1.4404 (AISI 316L), PVC, PP, PVDF, PTFE, PVC-C. Others on request Local indication: - By means of external float in a glass tube - By means of magnetic strips Options: - Switches. Optional with Ex d IIC T6 Explosion Proof Enclosure (ATEX certified) - Electronic transmitter with 4-20 mA analog output for safe or hazardous area (Ex ia IIC T6 protection, ATEX certified). HART, PROFIBUS,

Working principle Technical data According to communicating vessels principle. A float submersed in a chamber communicated with the tank whose liquid level needs to be measured floats on liquid surface and moves together with it, as level increases or decreases.  Accuracy: ±4 mm measured value The float is designed for the specific working liquid density and shows the tank level by means of magnetic coupling with an external float or with a magnetic strips rail (depending on model). Both of them are mounted externally and isolated of the level gauge chamber.  Liquid viscosity: 1500 cSt...

Level gauges Series LT Mounting The lower dimension LD, LP or LPV of series LT level gauges is variable depending on working liquid density. The lower the density, the longer this dimension. In order to remove the float due to a change in density of for maintenance purposes, a minimum distance LMS, longer or equal to LD distance, must be kept between the lowest side of the level gauge and the floor. Lower dimension Liquid Upper dimension With drain Without With drain Without + valve drain (LD) (LP) vent (LS) (LPV) With vent + valve (LVV) External float Borosilicate glass Guide tube

Float types Liquid density Maximum pressure Dimensions and specific technical data  Limit switches: LT ... LTL-APR / AAR / AMM / AMD Technical data  Transmitter LTE 0 ... 4-20 mA or guided radar LTDR  Material: EN 1.4404 (AISI 316L)  Measuring range: 150 ... 15000 mm (supplied in separate sections for measuring ranges longer than 5500 mm; one single section on request). Longer ranges on request. -20ºC ... 250ºC: magnetic strips indication -20ºC ... 400ºC: glass tube indication  Working pressure: PN16 ... PN40 (up to 100 bar max. on request)  Connections: - LT ... LTL106: DN15...

Level gauges Series LT Models LT ... LTL14 / PP, PVC, PVC-C, PVDF Technical data Technical data  Material: EN 1.4404 (AISI 316L) with internal PTFE coating  Measuring range: 6000 mm max. Longer ranges on request  Measuring range: 6000 mm max. Longer ranges on request  Working pressure: PN16 ... PN40  Connections: DN15 ... DN50 EN 1092-1 flanges (other flange standards and sizes on request)  Limit switches: LT ... LTL-APR / AMM / AMD Ex d IIC T6 version on request  Transmitter LTE 0 ... 4-20 mA or guided radar LTDR  Working pressure: PN10  Connections: DN15 ... DN50 EN...

Limit switches Adjustable switch LT ... LTL-APR All switches can be supplied with Ex d IIC T6 Explosion Proof Enclosure on request, ATEX certified  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 ...

Level gauges Series LT Transmitters Transmitter LTE 0 ... 4-20 mA 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. Variations in level inside the tank move the internal LT or LTL float, which by means of magnetic coupling changes the value of the resistance of the resistive sensor in correspondence to the measured liquid level. These variations of resistance are processed by an electronic converter in order to obtain a 0 ... 4-20 mA current output proportional to...

R-CT-LT Rev. 2 english version PRESENCE IN MORE THAN 50 COUNTRIES ALL OVER THE WORLD Tecfluid S.A. Narcís Monturiol 33 08960 Sant Just Desvern Barcelona Tel: +34 93 372 45 11 Fax: +34 93 473 44 49 tecfluid@tecfluid.com www.tecfluid.com Quality Management System ISO 9001 certified by Pressure Equipment Directive 97/23/CE certified by ATEX European Directive 94/9/CE certified by HART® is a registered trademark of HART Communication Foundation The technical data described in this specification sheet is subject to modification without notification if the technical innovations in the...