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RF level switches handle virtually any application

A K-Tek product story

Edited by the Engineeringtalk editorial team Apr 2, 2004

The KCAP300 and KCAP400 are RF capacitance switches for level detection in a wide variety of challenging applications, from low dielectric bulk solids to sticky slurries.

The KCAP300 and KCAP400 are RF capacitance switches for level detection in a wide variety of challenging applications, from low dielectric bulk solids to sticky slurries.

The one-step, external calibration process means there is no need to remove covers and violate equipment ratings; each unit is truly explosion-proof.

Whether the application involves liquids, pellets, granules, powders, chips, or flakes, the KCAP products feature one of the largest selections of probe elements.

Each incorporates the patented Kshield technology that provides immunity to conductive coating build-up and assures accurate, repeatable operation.

KCAP's all-electronic RF design means there are no moving parts to break or wear out.

The KCAP300 point level switch features a three-element shielded probe and optional external alarm indicating lamp.

The KCAP400 multipoint switch provides field-selectable modes of operation - single point, dual setpoint, and pump control - making it ideal for use in sump pumps, underground tanks, and tall silos.

The KCAP series features a simple, one-step calibration process.

Simply push a button and the switch is calibrated.

For hazardous environments where the unit's integrity must be maintained, a magnetic process is available to calibrate the equipment externally.

This means KCAP maintains its rating, unlike most level switches that require the cover to be removed for calibration.

The KCAP family includes a wide variety of versatile probe elements.

Users can choose "standard" for multipurpose applications or "low cost" for low-temperature/low-pressure use.

Specialised designs include "stub" or "bent" for small hoppers and vessels, "flexible tip" for aggregate or lump materials that might damage a fixed tip, and "rigid tip" for increased sensitivity in liquids.

Custom pipe extensions up to 45.720m, among the longest in the industry, are available for deep tanks or vessels that need to sense low-level conditions.

Each KCAP probe features Kshield, a patented technology that provides immunity to conductive coating build-up and assures accurate, repeatable operation.

The unique construction includes rolled seals and a welded assembly that locks all elements of the probe in position and ensures no part of the probe can fall into the process or be blown from the mounting.

"Many industrial environments are not conducive to the application of level measurement products", said Robert Hotard, Product Manager for Radar and RF Products at K-Tek Corp.

"KCAP's unique Kshield technology means sensing probes and electronics are immune to virtually any build-up.

And our sensitivity is unrivalled.

K-Tek is the only level instrument company in North America to hold an ASME stamp, making our sensing elements among the best in the world".

KCAP is designed for highly sensitive level applications, able to detect differences in capacitance as small as 1.0pF.

This is especially important for measuring materials with low dielectric, such as dry polyethylene pellets.

For those cases where there is limited access or moderate to severe vibration, KCAP sensing probes can be located remotely, up to 60m from the switch itself.

The KCAP300 and KCAP400 are housed in explosion-proof assemblies with screw-on glass viewing covers for quick and easy access.

For especially severe environments, a choice of single- or dual-compartment design allows users to isolate the wiring and terminations from the sensing elements and internal electronics.

The housing is available as powder-coated aluminium or stainless steel, for corrosive applications where aluminium may not stand up to the elements.

K-Tek's KCAP RF capacitance switches are available for immediate shipment.

Prices for the KCAP300 and KCAP400 start at $550.

Prices for the KCAP300 OEM version start at $250.

Delivery is one week from receipt of order.