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Measuring Material Level in Dusty Talc Applications for Luzenac America

PROBLEM:
“Ultrasonic systems from two leading manufacturers don’t work because of the heavy dust. The older weight and cable style doesn’t work well because of high maintenance. I need a reliable solution.”

EXPLANATION:
Luzenac supplies the pulp, paper and board industry with talc for use as a pitch control agent and a runnability aid, a coating pigment in both rotogravure and offset, and a functional filler. In certain specialty papers, e.g. colored papers, labels, Luzenac talc’s special properties help to improve quality and productivity. Talc also has application as an additive to ceramic, rubber, plastics and even roofing materials. Talc is about 50lbs/ft³ and very dusty. Older electromechanical weight & cable devices couldn’t live up to the rigors of the application, neither could ultrasonic systems that were blinded by the heavy dust.

SOLUTION:
The Monitor Technologies SiloPatrol® smart cable-based sensor system with 4-20mA output was being used successfully on this difficult application at the Luzenac plant in Sappington, Montana. The Three Forks plant needed a solution and decided to try the SiloPatrol inventory monitoring system to reliably keep track of their finished goods inventory. In this tough application the SiloPatrol proved to be the best solution. The sensor is unaffected by the dust and internal bin structures. The SiloPatrol sensor uses a powerful direct drive motor and 270lb. tensile strength cable along with state-of-the-art microcontroller based electronics.

Luzenac prefers the SiloPatrol system to other equipment they have tried. This is evidenced by their usage at the two plants in Montana and one plant in Houston, TX. They have dozens of units in place that continue to work reliably for them.

Give Monitor Technologies a call and let us put our creative solutions to work for you!

 

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Spotlight: True Fail-Safe Level Switch
SafePoint Level SwitchSafePoint Light  
SafePoint®
"True" Fail-Safe Level Switch

The SafePoint rotary paddle level switch with a self-validating design detects material presence plus continuously monitors its own ability to function. The analysis includes sensor health and system power failure, which makes the SafePoint truly “fail-safe”. The SafePoint incorporates patented use of Hall-Effect technology, dual outputs to indicate both material presence and unit health, and microcontroller technology to continuously protect bulk solids processing and storage from the consequences of unknown sensor failure by providing immediate indication of a sensor failure and confirmation of proper operation.

Other practical features of the SafePoint include rugged construction, motor shut-off when paddle becomes impeded to maximize motor life, twist On/Off cover for bolt free removal, and local status indicating light (except hazardous location models)

A practical application for the SafePoint would be to use this "true" fail-safe product if undetected sensor failure could result in a catastrophic process problem.

Click here for more information on the SafePoint Level Switch or contact Monitor Technologies LLC at 800-766-6486 in the USA and 630-365-9403 worldwide.

 

>>Click here to learn more about other Point Level Switches from Monitor Technologies

>>Download Product Bulletin 253

 

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