VEGA SN61.XXBNHVMAX VEGASWING 61 Vibrating Level Switch

Overview

The VEGA SN61.XXBNHVMAX is a VEGASWING 61 vibrating (tuning fork) point level switch built for reliable full or empty detection of liquids in vessels and pipelines. The device works by vibrating a compact 38 mm tuning fork at its resonance frequency; when the fork becomes immersed in liquid, the resonance frequency shifts, and the integrated electronics detect the change and issue a switching signal. Because the measuring principle relies on mechanical resonance rather than optical or capacitive effects, the VEGASWING 61 is largely unaffected by foam, turbulence, viscosity, colour, conductivity, or the mounting angle of the sensor, making it one of the most dependable point level switches available for general liquid service.

Seven Star LLC supplies the VEGA SN61.XXBNHVMAX as an authorized-partner VEGA distributor to process plants, water treatment facilities, tank farms, and OEM skid builders across Oman and the GCC. The SN61.XXBNHVMAX configuration code specifies the particular combination of process fitting, wetted material, electronics output, and approvals ordered for a specific liquid level application, and our engineering team can decode a full VEGA order code or help translate an existing switch’s nameplate data into the correct replacement part.

Measurement and Operating Principle

At the heart of the VEGASWING 61 is a piezoelectric drive that excites the stainless steel tuning fork at its natural resonance frequency, typically in the low kilohertz range while the fork is in air. When the liquid surface rises to cover the fork, the added mass and damping of the surrounding medium lower the resonance frequency measurably. The onboard electronics continuously monitor this frequency and trigger a switching output – relay, transistor, or two-wire NAMUR depending on the ordered electronics variant – the instant the shift crosses the calibrated threshold, with millimetre-level repeatability regardless of where on the vessel the switch is mounted.

This resonance-based method gives the VEGASWING 61 functional independence from the physical and chemical properties of the process medium: density differences down to roughly 0.5 g/cm³, heavy foam layers, high viscosity, and even significant pressure or temperature swings do not compromise the switch point. That robustness is why the VEGASWING 61 is widely specified for dry-run protection on pump suction lines, overfill protection on storage tanks, and general full/empty alarm duty in process vessels where optical or ultrasonic switches would struggle with coating, foam, or vapor interference.

Engineering Design

The wetted parts of the VEGASWING 61 fork assembly are constructed from 316L stainless steel with a Klingersil C-4400 seal, giving the sensor broad chemical compatibility and a process pressure rating from -1 to 64 bar across a process temperature range of -50 °C to +250 °C. The housing is available in plastic, stainless steel, or IP67-rated aluminium, and the electronics compartment is offered in several output configurations – relay (DPDT), contactless electronic switch, transistor (NPN/PNP), two-wire loop-powered, and NAMUR – so the same mechanical platform can be specified to match almost any control system interface.

For hazardous area duty the VEGASWING 61 carries ATEX and IECEx certification for Zone 0/1/2 gas and dust atmospheres (Ex ia and Ex d variants), along with SIL2 capability for safety-related overfill and dry-run protection loops, plus marine type approvals (DNV, GL, LRS, ABS) for shipboard and offshore installations. This certification breadth, combined with a compact fork length of only 38 mm, allows the switch to be installed in tight nozzles and small-bore pipework where longer float or displacer switches will not fit.

VEGA SN61.XXBNHVMAX Key Features

• The VEGA SN61.XXBNHVMAX vibrating fork switch delivers millimetre-accurate switching independent of mounting position
• Unaffected by foam, turbulence, viscosity, or the colour and conductivity of the process liquid
• 316L stainless steel wetted parts rated to -1…64 bar and -50 °C to +250 °C
• Compact 38 mm tuning fork suits small nozzles and tight pipe connections
• Multiple electronics options: relay, transistor NPN/PNP, two-wire, NAMUR, contactless switch
• ATEX and IECEx certified for Zone 0/1/2 hazardous area gas and dust duty
• SIL2 capable for safety-related overfill and dry-run protection loops
• Marine type-approved (DNV, GL, LRS, ABS) for shipboard and offshore tank service

Industrial Applications for the VEGA SN61.XXBNHVMAX

The VEGA SN61.XXBNHVMAX is deployed as overfill protection on bulk storage tanks, dry-run protection on centrifugal pump suction lines, high/low alarm switching in process vessels, and general full/empty detection in chemical dosing tanks, water and wastewater plants, and food and beverage processing lines. Its resonance-based principle makes it a preferred choice over optical or capacitive switches in applications with heavy foam, coating liquids, or viscous media where those technologies commonly give false signals.

Seven Star LLC, as an authorized VEGA partner serving Oman and the broader GCC, supports desalination plants, refineries, and industrial water treatment operators in Muscat, Sohar, Duqm, and Salalah with genuine VEGASWING 61 switches and full order-code decoding so the correct process connection, wetted material, and hazardous area certification is matched to each tank or vessel before the unit ships.

VEGA SN61.XXBNHVMAX Technical Specifications

Request a Quote

Contact Seven Star LLC today to request a quote for the genuine VEGA SN61.XXBNHVMAX vibrating level switch, including order-code verification and delivery to your site in Oman or the GCC.

Seven Star LLC keeps the VEGA SN61.XXBNHVMAX in its standard quoted range for Oman-based process, water treatment, and marine customers requiring fast-turnaround vibrating level switches.