Rosemount 9901 Chamber for Process Level Instrumentation

Categories: ,


Emerson offers a variety of high quality chambers which allows external mounting of level measurement and control instrumentation on process containers. Emerson offers the Rosemount 9901 as a solution, which is complemented with a 2” option for Europe. The range offers a PED compliant design which is compatible with ASME B31.3 or B31.1, allowing for users to buy an integrated bolt-on solution, or simply a bypass chamber to use with their current equipment. Chambers are made of certified and traceable materials, and man-made using full penetration joins with welders and welding procedures qualified according to ASME and European standards. All bridles are hydro tested when completed including a full range of NDT or customer inspection possibilities to order.

Access official site



Design Standard and T-piece

Dimensions 2-4 in. (2 in. option only available in Europe)

Materials of Construction Stainless steel and carbon steel

Operating Pressure Up to 5558 psi (383 bar)

Operating Temperature -148 to 752°F (-100 to 400°C)



Industry preferred weld neck flanges are used to increase safety and minimize the amount of welds

Pressure Equipment Directive (PED) compliant design available

Custom design service available

System optimized for use with the Rosemount 3300, 3308, and 5300 level transmitters