Rosemount 2501 Solids Level Switch (Rotating Paddle)

Rosemount1 configuration

Configure Your Rosemount 2501 Solids Level Switch (Rotating Paddle)

Heavy-duty rotating-paddle point-level switch for bulk solids. A small motor turns a paddle inside the silo; when product covers the paddle the motor stalls and the switch trips. Works on virtually all bulk solids regardless of dielectric, electrostatic charge, or dust. Withstands extreme temperatures up to 1100°C. Best for cement, aggregates, ash, grain, and any bulk solid where vibrating or capacitance sensors fail.

Required Specifications

9 of 9 selected

Application*

Process Operating Temperature*

Process Operating Overpressure*

Materials of Construction: Process Connection*

Materials of Construction: Extension*

Cable Entry*

Process Connection Size*

Power Supply*

Measuring Vane*

Rosemount 2501 Solids Level Switch (Rotating Paddle) Part Number

2501L1ADD11AD

Configured list price:$767.29(estimate based on May 2026 Rosemount list; quote may reflect distributor pricing)

Configuration Summary — Rosemount 2501 Solids Level Switch (Rotating Paddle)

Base: $767.29

Application:: LFull/Empty detection in small vessel, low mechanical resistance
Process Operating Temperature:: 1Max. 176 °F (80 °C)
Process Operating Overpressure:: AMax. 0.8 bar (11.6 psi)
Materials of Construction: Process Connection:: D303/304/321 Stainless steel (1.4305/1.4301/1.4541)
Materials of Construction: Extension:: D303/304 Stainless steel (1.4301/1.4305)
Cable Entry:: 1M20 x 1.5 1off screwed cable gland +1 off blind plug for CE, ATEX, IEC-Ex
Process Connection Size:: 11in. / 25 mm (DN25) / 25A
Power Supply:: A230 V AC 50 - 60 Hz, Motor Speed: 1 revolution per minute
Measuring Vane:: D1.57 x 3.86in (40 x 98mm), boot-shaped vane D

Rosemount is configurator-heavy and quote-only — Valley Instrument verifies option compatibility, lead time, and pricing before confirming your order.

Pre-configured Options(1)

Rosemount

2501 Solids Level Switch (Rotating Paddle)

Heavy-duty rotating-paddle point-level switch for bulk solids — a small motor turns a paddle inside the silo; when product covers the paddle the motor stalls and the switch trips. Works on virtually all bulk solids regardless of dielectric, electrostatic charge, or dust. Withstands extreme temperatures up to 1100°C and demanding mechanical conditions (heavy product loads, abrasive media). Best for cement, aggregates, ash, grain, and any bulk solid where vibrating or capacitance sensors fail. Vertical, horizontal, or oblique mounting.

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