Rosemount 2140 SIL Vibrating Fork Level Detector

Rosemount1 configuration

Configure Your Rosemount 2140 Vibrating Fork Liquid Level Detector

Premium vibrating-fork liquid level switch with HART communication and electronic self-diagnostics. Successor to the 2120 with extended self-checking, switchable HART 5/HART 7, and SIL 2 capability. Used for high/low-level alarms, overfill prevention, and pump dry-run protection across hydrocarbon and water-based applications.

Required Specifications

10 of 10 selected

Profile*

Housing Material*

Conduit Entry / Cable Threads*

Operating Temperature*

Materials of Construction: Process Connection / Fork*

Process Connection Type*

Process Connection Size*

Fork Length*

A0000

Surface Finish*

Certifications*

Rosemount 2140 Vibrating Fork Liquid Level Detector Part Number

2140AHA1MH9BA00001NA

Configured list price:$3,685.41(estimate based on May 2026 Rosemount list; quote may reflect distributor pricing)

Configuration Summary — Rosemount 2140 Vibrating Fork Liquid Level Detector

Base: $2,594.93

Profile:: AStandard monitoring and control application
Housing Material:: AAluminum Alloy ASTM B85 A360.0
Conduit Entry / Cable Threads:: 11/2 inch NPT
Operating Temperature:: MMid-Range: -40° to 356° F (-40° to 180° C)
Materials of Construction: Process Connection / Fork:: HAlloy C (UNS N10002), Alloy C-276 (UNS N10276), solid+$1,090.48
Process Connection Size:: 93/4-in. / 19 mm
Process Connection Type:: BBSPT (R) thread
Fork Length:: A0000Standard length 1.7 inches (44 mm)
Surface Finish:: 1Standard surface finish
Certifications:: NANo Hazardous Locations certifications

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

2140 SIL Vibrating Fork Level Detector

Functional-safety-certified vibrating fork level detector — same fork-resonance core as the 2130 with full IEC 61508 SIL 2 (single) / SIL 3 (redundant) certification for safety-instrumented systems. Best for overfill prevention, dry-pump protection, and other safety-critical applications where the underlying detection technology must carry an independent third-party safety certification. HART or two-channel digital output with diagnostic coverage.

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