WIKA External Chambers for Level Measurement & Switching

External Chambers from WIKA WIKA external chambers provide a flexible and reliable solution for level measurement and point level detection in pressurized vessels, aggressive media, and demanding process environments. Installed externally on tanks or vessels, these chambers act as a stable measurement column and can be combined with multiple level instruments—such as magnetic level indicators, reed chain transmitters, or point level switches—without penetrating the process vessel.

Designed for accuracy, safety, and long service life, WIKA external chambers are widely used across chemical processing, oil & gas, power generation, and industrial manufacturing applications.

Product Overview & How External Chambers Work

What Are External Chambers?
External chambers are vertically mounted pressure-resistant housings connected to a vessel via process connections. The liquid inside the chamber mirrors the level inside the vessel, allowing level measurement devices to operate outside the tank while maintaining process integrity.

How WIKA External Chambers Add Value

Enable non-invasive level measurement
Allow multiple instruments on a single chamber
Reduce vessel modifications and downtime
Improve operator safety and serviceability
Maintain accuracy under high pressure and temperature conditions

WIKA chambers are engineered to meet international pressure vessel standards and are fully compatible with WIKA’s level measurement and switching technologies.

Applications and Industries

Typical Applications

Pressurized storage tanks
Boilers and condensate systems
Chemical reactors
Separators and process vessels
High-temperature or hazardous media

Industries Served

Chemical & petrochemical
Oil & gas
Power generation
Food & beverage
Water and wastewater treatment

Design Features & Construction

Built for Harsh Process Conditions

WIKA external chambers are manufactured from high-quality materials and tailored to the specific requirements of the application.

Key Construction Features

Available in carbon steel, stainless steel, and special alloys
Designed for high pressure and high temperature service
Flanged, threaded, or welded process connections
Precision internal geometry for stable float movement
Optional insulation, heating jackets, and drain/vent connections

Each chamber is designed to ensure smooth, repeatable level tracking even in applications with turbulence, vapor space, or changing process conditions.

Q&A Section with Expand/Collapse Icons

External Chambers Q & A

+ What is the purpose of an external chamber in level measurement?

An external chamber provides a controlled measurement column outside the vessel, allowing level instruments to operate without direct vessel penetration while maintaining accurate level tracking.

+What instruments can be mounted on a WIKA external chamber?

WIKA external chambers can be fitted with magnetic level indicators, continuous level transmitters, and point level switches, allowing multiple measurement and alarm functions on one chamber.

+ Are WIKA external chambers suitable for high-pressure or high-temperature applications?

Yes. WIKA external chambers are designed for demanding process conditions and can be configured to handle high pressures, elevated temperatures, and aggressive media.

+ Can an external chamber be customized for my application?

Absolutely. WIKA offers customized chamber lengths, materials, process connections, and mounting options to match specific vessel and process requirements.

+ Why choose an external chamber instead of direct tank-mounted sensors?

External chambers improve safety, simplify maintenance, reduce vessel modifications, and allow multiple instruments to be installed without compromising process integrity.

Download WIKA Model BZG-H External Chamber Datasheet

Talk to one of our process control experts today at (855) 737-4714 or fill out our online form to learn more.

External Chambers from WIKA