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, 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
  • 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
DocumentationFeatures & BenefitsSpecificationsApplications
 Product & Service Documentation
 Data Sheets - Bulletins - Catalogs
 Data Sheet: Rosemount 9901 Chambers for Process Level Instrumentation
922 KBpdfJanuary 2009AA
English
 Manuals & Guides
 Manual: Rosemount 9901, Safety Instructions
73 KBpdfDecember 2008AA
English
 Proven Results
 Proven Result: Chemical Plant Gets Stable Level Measurement in Turbulent Freon Surge Drum
126 KBpdfOctober 2006BA
English
 Proven Result: Guided Wave Radar Solves Level Measurement Problem in Distillation Column
98 KBpdfOctober 2006BA
English
 Proven Result: Guided Wave Radar Transmitter Improves Oil/Water Interface Detection Reliability
120 KBpdfOctober 2006BA
English
 Proven Results: Asian Refinery Minimizes Maintenance with Multivariable Guided Wave Radar
80 KBpdfOctober 2006CA
English
 Technical White Papers
 Technical Note: Guidelines for choosing and installing radar in stilling wells and bypass pipes
496 KBpdfApril 2006AA
English
 Technical Note: Replacing Displacers with Guided Wave Radar
488 KBpdfJune 2009BB
English
Quick Links 

9901 Chambers

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