Rosemount Vibrating Fork Level Switch Stainless Steel Housing Side, Top Mount 211010A1NA

Rosemount 211010A1NA vibrating fork level switch features a robust stainless steel housing designed for side or top mounting. Utilizing a piezo-electric crystal, its dual forks vibrate at a natural frequency that changes with liquid density, enabling precise level detection.

Operating between -40°C and 150°C and withstanding pressures up to 100 bar, this level switch supports maximum AC voltage of 264V and DC voltage of 60V with a maximum current rating of 500mA. It includes a 3/4-inch BSPT threaded process connection for secure installation.

The compact design suits small vessels and pipe installations, with no moving parts which minimizes maintenance. The fast drip fork design ensures quicker response particularly in viscous liquids. The unit offers PNP low voltage switching from 18VDC to 60VDC, with a 4-way plug connection providing polarity insensitivity and short circuit protection.

Equipped with a magnetic test point and an LED heartbeat indicator, functional tests can be performed easily without system interruption. Its hygienic fork shape allows hand polishing and meets compliance for sanitary applications. The device is EHEDG approved and rated IP66/67, making it suitable for industrial, manufacturing, HVAC, and water treatment sectors.

Typical applications include overfill protection, high and low-level alarms, leak detection, run-dry pump protection, and pump control or limit detection. Operates on tuning fork principle with piezo-electric oscillation.

3/4-in. BSPT threaded process connection ensures secure installation. Rugged stainless steel construction ideal for harsh industrial environments. Wide operating temperature range from -40°C to 150°C. Supports maximum pressure up to 100 bar for resilient performance.

PNP low voltage switching with short circuit protection and polarity insensitivity. Magnetic test point with LED heartbeat indicator for easy diagnostics. EHEDG certification and IP66/67 ingress protection rating. Suitable for hygienic processes and small vessel or pipe level detection.

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