LTM Level Probe

Overview

The LTM-2 Level Probe works on a potentiometric measuring principle that measures the change in the voltage ratio between the electrode rod of the sensor and the metallic wall of the filled tank. An electric ﬂow field arises in the medium due to the conductivity of the medium and its capacitive properties. This gives rise to a voltage ratio that is proportional to the immersed part of the rod.

Benefits

Accurate slurry level monitoring, effectively finds the pulp-frot interface
Conductive working principle, instead of capacitive that is affected by froth buildup
1% measurement accuracy
1% measurement linearity
Near instantaneous measurements (100mS)
Extremely stable operation
Easy to understand and use
Little maintenance is required on the system, much less than conventional systems
Instrument rating is IP 69K so very impervious to water, slurry and dust
Easy to mount in place
Less hardware to install and manage
Complete 316 S/S rod constructions and 304 S/S head construction

Function Principle

This system analyzes electrical resonance properties to detect foam and suppress it in the results, and to reliably prevent erroneous measurements due to adhesions.

Benefits

Effective Process Control
Data available for existing PLC, DCS or SCADA
Additional Parameters available (froth stability, bubble burst rate, froth texture)
Web based Trending and Reporting
Simplicity
High Quality Hardware
Robust – industrialised for plant conditions
Remote Support

Continuous level measurement in metallic vessels up to 3 m in height
Ideal for adhesive and pasty media
Level measurement of foaming media
Minimum product conductivity 1 µS/cm
Substitute for ﬂoat sensors
For media with homogenous conductivity

Examples

Level control in first running vessels of dosing plants
Suitable for measuring the level in small vessels with overpressure
Flotation cell level control
Sump level control

Product Specifications

Rod length	3000 mm max
Rod diameter	10 mm
Measurement Range	50..3000 mm
Process pressure	max. 16 bar
Response Time	< 100 ms
Weight	550g with rod length of 1500 mm