Bruel-Kjaer VS-068 Velocity Sensor
Overview
Bruel & Kjaer VS-068 is an electrodynamic velocity sensor built for permanent, stationary installation on rotating machinery, providing continuous, contact-mounted measurement of horizontal vibration velocity. With a sensitivity of 100 mV/mm/s and a frequency range of 10–2000 Hz, it is engineered specifically for reliable, long-term condition monitoring rather than portable survey work, and is supplied with an integrated cable for direct connection into a plant vibration monitoring or protection system.
As the an experienced supply partner for Bruel & Kjaer Vibro, Seven Star LLC proudly supplies the VS-068 sensor and the full range of compatible Bruel & Kjaer Vibro monitoring equipment to industrial operators across Oman and the GCC. Every unit is sourced through Bruel & Kjaer Vibro’s trusted supply channel, giving plant operators genuine calibration data and full manufacturer support.
Measurement Principle
The VS-068 uses electrodynamic (moving-coil) transduction: a coil suspended on springs within a magnetic field moves relative to the sensor housing as the mounting surface vibrates, and this relative motion induces a voltage directly proportional to vibration velocity, without requiring external excitation power. This self-generating design produces a robust, low-impedance output signal that is straightforward to wire into standard monitoring instrumentation.
Because the sensor measures velocity directly rather than deriving it from acceleration through integration, it delivers a signal that closely matches the vibration severity metrics used in international standards such as ISO 10816, which is why electrodynamic velocity sensors like the VS-068 remain a standard choice for continuous machine protection applications despite the availability of newer accelerometer-based alternatives.
Engineering Design of the Bruel-Kjaer VS-068
The Bruel-Kjaer VS-068 is built for stationary, permanent mounting directly onto bearing housings or machine casings, with its horizontal sensing orientation matched to the direction in which radial vibration is typically most significant on rotating equipment. Its integrated cable eliminates a separate connector interface at the sensor body, reducing potential failure points in continuous field service.
Rated for operation from −40°C to +80°C (with short-term tolerance to +100°C), the sensor’s rugged construction is designed to withstand the temperature extremes, dust, and mechanical shock typical of bearing-housing mounting locations in industrial plant environments, supporting stable long-term calibration without frequent recalibration.
Key Features
The VS-068 delivers dependable, self-generating velocity measurement for continuous machinery monitoring.
- The sensor provides a sensitivity of 100 mV/mm/s across a 10–2000 Hz frequency range, matched to standard machinery vibration monitoring needs.
- Its self-generating electrodynamic design requires no external excitation power, simplifying wiring and reducing points of failure.
- An integrated cable eliminates a separate sensor-body connector, improving reliability in continuous field service.
- The sensor is rated for a wide operating temperature range from −40°C to +80°C, with short-term tolerance to +100°C.
- Its stationary, permanent-mount design suits long-term continuous condition monitoring rather than portable survey work.
- The horizontal sensing orientation matches typical radial vibration measurement requirements on rotating machinery.
- Stable long-term calibration reduces the frequency of recalibration and associated maintenance costs.
- Compatibility with a wide range of data acquisition and monitoring systems simplifies integration into existing plant infrastructure.
Industrial Applications
Across Oman’s power generation, oil and gas, and manufacturing sectors, the VS-068 is permanently mounted on pumps, motors, turbines, and compressors as part of continuous predictive maintenance programs, giving reliability engineers ongoing visibility into machine condition without relying solely on periodic manual vibration surveys. Facilities in Muscat’s industrial areas and the Sohar and Salalah economic zones use sensors of this class to detect early signs of bearing wear, imbalance, or misalignment before they escalate into unplanned downtime.
Working closely with plant engineers in the region, Seven Star LLC distributes the VS-068 to plant reliability teams, EPC contractors, and rotating-equipment service providers throughout Oman and the GCC, supporting both new-build condition monitoring systems and the replacement of aging or damaged velocity sensors on operating plant.
Technical Specifications
The table below summarizes the key specifications of the Bruel-Kjaer VS-068 velocity sensor.
| Parameter | Specification |
|---|---|
| Model | VS-068 |
| Type | Electrodynamic velocity sensor, stationary mount |
| Sensitivity | 100 mV/mm/s (±5%) |
| Frequency Range | 10 – 2000 Hz |
| Orientation | Horizontal |
| Temperature Range | −40°C to +80°C (short-term +100°C) |
| Cable | Integrated |
Why Choose Seven Star LLC for the VS-068 Vibration Sensor
The VS-068 is a velocity sensor built for continuous machinery protection duty, and its integrated cable and defined frequency response mean it is typically specified to match a particular monitoring rack or a specific mounting arrangement rather than swapped in generically. Before confirming an order, Seven Star LLC verifies the sensor’s sensitivity rating, frequency range, and cable configuration against your existing installation, since a unit from a different production batch can carry a slightly different specification that will not calibrate correctly against your current alarm setpoints. This check matters most for facilities across Oman and the wider GCC running the VS-068 on critical rotating equipment, where an uncalibrated or mismatched replacement can produce false readings rather than a genuine early warning of a developing fault.
For plants operating several VS-068 sensors across a shared protection system, we also help plan spares coverage around scheduled maintenance windows rather than reactive failures, so a damaged cable or a degraded sensor does not force an unplanned response while a replacement is located. If your facility is unsure whether the VS-068 remains the right sensor for a specific application, or is weighing a move to a newer sensor generation, our team is glad to review your actual mounting and wiring configuration before making any recommendation, so the guidance reflects how your system truly operates.
Request a Quote for Bruel-Kjaer -VS-068
Seven Star LLC invites plant reliability engineers and procurement teams across Oman and the GCC to submit a formal RFQ for the Bruel-Kjaer VS-068 velocity sensor and compatible monitoring equipment. We supply on request with lead time confirmed at quotation, provide full technical datasheets on request, and our instrumentation division is available to confirm sensor and system compatibility for your specific installation. With fast quotation turnaround and technical support, Seven Star LLC supplies factory-calibrated sensors on request with local technical support.
Related Products
- Brochure Brüel & Kjær Bruel-Kjaer VS-068 Velocity Sensor Catalog Download
Brüel & Kjær Vibro product families
The largest group here is rack hardware: SM-610 monitoring modules in many variants (the suffix, as in SM-610-A02 or SM-610-118, fixes the version), the PS-610 power supply module and the CI-620 communication interface. Stand-alone monitors include the VIBROCONTROL 1000, the VC-920 and the VC-868/1, alongside the AMO-622 monitoring system. Sensors include the VS-068 and VS-069 velocity sensors. The manufacturer's present machinery protection platform is the VC-8000. Laboratory accelerometers and sound and vibration analyzers that carry the Brüel & Kjær name are a separate product line; send us the type number if that is what you need.Where Brüel & Kjær vibration monitoring is used
Typical machines are steam and gas turbines, generators, centrifugal compressors, boiler feed pumps, cooling tower and process fans and gearboxes in power plants, oil and gas facilities, cement works and petrochemical plants. The monitors supply alarm and trip contacts to the plant protection system and measured values to the control room.Ordering Brüel & Kjær Vibro parts: what we need
Send the complete type designation with its suffix, the order or part number from the label, and the serial number. For monitors add the measuring span, sensor type, supply voltage and output configuration, since many units are configured to order. For sensors give sensitivity, mounting direction, cable length, connector and the hazardous area approval. Photos of the label and of the rack help.Browse Brüel & Kjær products by category: Vibration, Portable Test & Measurement, Sensors & Transmitters.
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