Level Measurement & Control


Bypass level indicators

June 2021 Level Measurement & Control

Instrotech now offers Kobold’s NBK level indicators for continuous measurement, display and monitoring of liquid levels in above or below-ground tanks.

According to the law of communicating tubes the level in the bypass tube equals the level in the vessel. The bypass tube is attached onto the side wall of the vessel. A float, with embedded circular magnets in the bypass tube follows the liquid level and transfers it, without contact, to a display fitted outside the tube, or to a monitoring device. In addition, reed contacts can be installed on the bypass to evaluate limit values or to control the filling level.

Users can choose from clearly visible magnetic roller or ball displays, as well as from a range of measuring transducers enabling remote transmission of level values. Other features include:

• Stainless steel 1.4571.

• Pressure maximum: PN320.

• Temperature maximum: 400°C.

• Measuring maximum: 5,5 m (two parts if longer).

Kobold NBK finds application in tanks (shipping, storage and water) and agitator vessels.

Options available for the instrument are a 4-20 mA transmitter, reed contacts and HART, Profibus PA and Foundation Fieldbus interfaces.

For more information contact Instrotech, +27 10 595 1831, sales@instrotech.co.za, www.instrotech.co.za


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