Catalogue - TX Series Thermal Dispersion Flow / Level / Temperature Switch (Standard Response) - K-TEK

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Ultrasonic transmitter, Laser level sensor, Sensor, Positioner, Level sensor

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theory of operation

The sensor head employs two temperature sensors with a constant low power heating source physically attached to one of the sensors (see Fig. 1). This creates a temperature differential (AT) between sensors which varies depending on the surrounding product's ability to disperse heat. The amount of heat dispersed is relative to the product's thermal conductivity and therefore can detect liquid interfaces and flow rate changes that other technologies cannot differentiate. Compensation for process temperature changes is made automatically and sensO

does not affect calibration.

transmitter

ultrasonic

plumb

bob

radar

magnetostrictive

ultrasonic

radar

laser [

i «y.

ma0netk level gauge

magnetic switch

iTHERMAUDISPERSION

float switch

The Thermal Dispersion switch electronics offer the 111 latest technology including constant current sensor/heater ^50% -excitation, precision signal amplification and highly H reliable and repeatable switch point operation. Field 111 calibration is accomplished by simply adjusting a B

potentiometer to the desired set-point. H

paddle wheel

rf switch

vibrating fork

% thermal / dispersion

SWITCHES

rf switch

typical level applications for thermal dispersion switches

vibrating fork

Thermal Dispersion switches are well suited to detect interface of air / liquid, liquid / liquid, air / foam, emulsion layers or liquid / solid or granular solids. This example illustrates the Thermal Dispersion switches being used to detect the oil layer in an oil / water separator. A second switch is used to detect the rise of the sand layer in the separator.

seal pot

Thermal Dispersion switches are capable of handling temperatures up to 900°F (482°C) and pressures up to 10,000 PSIG (690bar). The ability to function under the harshest conditions make it an ideal selection in high temperature and / or high pressure tanks where other technologies are limited.

18321 SWAMP ROAD • PRAIRIEVILLE, LA 70769 PHONE: (1)225-673-6100 • TOLL FREE: 800-735-5835 • FAX: (1)225-673-2525 VISIT OUR WEBSITE: www.ktekcorp.com • e-mail: sales@ktekcorp.com

Represented Locally By:

world innovator of switch technology

Additional advantages to Thermal Dispersion level switches is the ability to operate in viscous, hot fluids such as crude oil or molasses. Slurries with high particulate content and sump level detection are additional applications ideally suited for Thermal Dispersion technology.

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Doc. No.: CBR-0006-1 Rev NC (06-2006)

TX Series Thermal Dispersion Flow / Level / Temperature Switch (Standard Response) - K-TEK - #1

Ultrasonic transmitter, Laser level sensor, Sensor, Positioner, Level sensor