Rosemount 9901 - Chambers for Process Level Instrumentation 

The Rosemount® 9901 is a range of high quality chambers which allow external mounting of level measurement and control instrumentation on process vessels.

The range offers a PED compliant design in accordance with ASME B31.3 or B31.1, allowing users to buy an integrated bolt-on instrument solution, or simply a chamber for use with existing instrumentation.

The 9901 series uses only certified and traceable materials and is manufactured using full penetration welds, with welders and welding procedures qualified to both ASME and European standards. All chambers are hydro tested on completion, with a full range of NDT or customer inspection options available to order.

• Standardised or custom design to fit existing vessels

• Allows external mounting of process level instrumentation

• Enables live maintenance

• Designed to ASME B31.3

• ASME B31.1 available upon request

• Pressure Equipment Directive (PED) compliant

• Used worldwide by major industries

• Ideal for critical area and general purpose applications

• Variety of process connections and optional drain and vent connections

• More than 50 years of experience in designing and manufacturing chambers in accordance with international codes

Features and Benifits :

Allows isolation of instrument

• Live maintenance

• Safety when handling

• Hazardous liquids

• High pressure and high temperature applications

Bypass in tank constraints

• Agitators

• Heat exchangers

• Hazardous liquids

• Internal structures

Stilling tube

• Act as stilling tube for turbulent conditions

Specifications :  

Applications :

Guided Wave Radar Solves Level Measurement Problem in Distillation Column
Guided Wave Radar Transmitter Improves Oil/Water Interface Detection Reliability
Asian Refinery Minimizes Maintenance with Multivariable Guided Wave Radar
Chemical plant gets stable level measurement in tubulent freon surge drum