Rosemount 2130 Vibrating Fork Level Switch

Fits liquid wet/dry point-level detection where a vibrating-fork switch is specified — electronics cassette options for direct load, PNP/PLC, relay DPCO, or NAMUR — with mid-range media to +180 °C or high-temperature options to +260 °C and SIL 2 (SIL 3 capable) listing.

Key advantages

Vibrating-fork liquid switch — Wet/dry point level without a continuous level transmitter.
Cassette outputs — Direct load, PNP/PLC, relay DPCO, or NAMUR electronics options.
+180 °C / +260 °C — Mid-range to +180 °C; high-temperature options to +260 °C.
SIL 2 (SIL 3 capable) — IEC 61508 listing with Ex/IS/XP options by code.
Heartbeat LED + mag test — Local status/diagnostics and magnetic test point.

Typical applications

High/low liquid level switching in tanks and pipes.
Overfill and dry-run protection where a fork switch is preferred to floats.
SIL-rated liquid point-level trips with cassette-matched outputs.

Selection guide

Function — Vibrating-fork point level switch for liquids (wet/dry detection).
Output — Direct load (2-wire AC/DC); PNP/PLC 3-wire; Relay DPCO; NAMUR (electronics cassette options).
Supply — Direct load 20–264 Vac / 20–60 Vdc; PNP 20–60 Vdc; Relay 20–264 Vac / 20–60 Vdc; NAMUR 8 V (per PDS).
Process connection — Threaded, flanged, and hygienic options per 00813-0100-4130 ordering table.
Wetted materials — 316/316L stainless steel fork; polished options for hygienic service.
Media temperature — Mid-range −40 to +180 °C; high-temperature −70 to +260 °C.
Process pressure — Up to ~1450 psig class (derated with temperature; see OEM pressure/temperature charts).
Approvals — SIL 2 certified to IEC 61508 (SIL 3 capable), Ex/IS/XP options by order code.

Common mistakes

Ordering mid-range electronics when process temperature needs the +260 °C high-temperature option.
Leaving output cassette blank — direct load vs PNP vs relay vs NAMUR changes wiring and supply.
Assuming continuous level measurement — 2130 is a point-level switch.
Claiming SIL/Ex coverage without the matching order codes on the quote.
Ignoring density / turbulence — use switching delay and OEM application notes for splash/aeration.

When to RFQ / what to tell us

Media, density, temperature, pressure, and wet/dry switching duty.
Process connection (thread/flange/hygienic) and fork material/polish need.
Electronics cassette (direct load / PNP / relay / NAMUR) and required SIL/Ex marks.
Quantity, ship-to country.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	38791
Brand	Rosemount
Model	2130
Product type	level_switch
Measuring range	Vibrating-fork point level switch for liquids (wet/dry detection)
Accuracy	Switching based on fork natural-frequency change; adjustable switching delay for turbulence/splash
Output signal	Direct load (2-wire AC/DC); PNP/PLC 3-wire; Relay DPCO; NAMUR (electronics cassette options)
Supply voltage	Direct load 20–264 Vac / 20–60 Vdc; PNP 20–60 Vdc; Relay 20–264 Vac / 20–60 Vdc; NAMUR 8 V (per PDS)
Process connection	Threaded, flanged, and hygienic options per 00813-0100-4130 ordering table
Wetted materials	316/316L stainless steel fork; polished options for hygienic service
Housing material	Aluminum / SST housings per electronics and hazardous-area codes
IP rating	Per housing/electronics selection in PDS 00813-0100-4130
Media temperature	Mid-range −40 to +180 °C (−40 to +356 °F); high-temperature −70 to +260 °C (−94 to +500 °F)
Ambient temperature	Per electronics cassette tables in PDS
Process pressure	Up to ~1450 psig class (derated with temperature; see PDS pressure/temperature charts)
Min density	Liquid density detection via vibronic principle (see PDS application notes)
Communication	Local heartbeat LED status/diagnostics; magnetic test point
Display	Heartbeat LED on electronics cassette
Approvals	SIL 2 certified to IEC 61508 (SIL 3 capable), Ex/IS/XP options, CE
Notes	Specs from Emerson Rosemount PDS 00813-0100-4130 Rev EI (Sep 2024) + product page.

Documents

FAQ

Q: Which output cassette? A: Direct load 2-wire AC/DC; PNP/PLC 3-wire; Relay DPCO; or NAMUR — each has its own supply window per PDS.

Q: Media temperature classes? A: Mid-range −40 to +180 °C; high-temperature −70 to +260 °C — lock class on the RFQ.

Q: What should I send for a quote? A: Cassette, connection, T/P, Ex/SIL, quantity. Compatible with systems using Rosemount 2130 — we do not claim authorized-dealer status.