Bruel-Kjaer VC-868/0 Vibration Monitor 115/230V
Overview
The Bruel and Kjaer VC-868/0 vibration monitor is a device operating at 115/230V and 50/60Hz with a power consumption of 10 VA. It was widely used in industrial applications for reliable vibration monitoring and early fault detection in rotating machinery.
Although this model is now obsolete, it has been replaced by the more advanced VIBROCONTROL 850 series, and the VC-868/0 remains available as a replacement part for installed systems.
Engineering & Design
Engineered for robust industrial environments, the VC-868/0 provided accurate vibration measurement and alarm outputs to protect machinery from potential damage. It was designed to operate on standard voltage supplies of 115 or 230 volts, making it adaptable for diverse power configurations.
The device supported predictive maintenance efforts by alerting operators of abnormal vibration levels, helping reduce downtime and maintenance costs. Its durable build and ease of integration with control systems made it a mainstay of machinery protection monitoring.
Key Features
- Vibration monitoring device
- 115/230V, 50/60Hz operation
- 10 VA power consumption
- Alarm outputs for machinery protection
- For rotating machinery monitoring
- Durable industrial build
- Predictive maintenance support
- Replaced by VIBROCONTROL 850 series
Applications
- Rotating machinery monitoring
- Early fault detection
- Vibration alarm systems
- Predictive maintenance
- Legacy machinery protection
Specifications
| Specification | Value |
|---|---|
| Manufacturer | Bruel and Kjaer |
| Model | VC-868/0 |
| Type | Vibration monitoring device |
| Power | 115/230V, 50/60Hz |
| Consumption | 10 VA |
| Outputs | Vibration alarm outputs |
| Status | Obsolete, replaced by VIBROCONTROL 850 |
| Application | Rotating machinery protection |
For machinery protection, the Bruel and Kjaer VC-868/0 vibration monitor is the legacy device, and Seven Star LLC supplies the Bruel and Kjaer VC-868/0 vibration monitor for replacement programmes.
The Bruel and Kjaer VC-868/0 vibration monitor is the compact unit that measures the vibration of the rotating machinery and provides the alarm relay for the protection of the machine. The monitor is supplied for the panel mounting with the cut-out dimension of the standard instrument. The sensor input accepts the accelerometer signal and the display shows the vibration velocity of the machine.
The alarm set point is adjusted on the front panel and the relay output is wired into the shutdown and the annunciator circuit. The monitor is powered from the mains supply and the available options include the analog output for the plant DCS. The unit is used for the fans, the pumps and the motors of the process plant.
The VC-868/0 monitor is configured for the measurement range of the accelerometer and the display is scaled in mm/s for the vibration velocity. The alarm relay set point is adjusted on the front and the hysteresis is fixed in the internal circuit. The monitor enclosure is rated for the panel installation of the control room and the terminal block is marked for the wiring. The instrument is used for the rotating equipment of the water and the process plant.
The VC-868/0 is mounted in the switchgear panel and the sensor is connected with the screened cable of the instrument. The monitor readings are compared with the portable vibration meter during the commissioning. The unit is protected against the supply transients with the internal filter and the relay output is rated for the control circuit.
Why Seven Star LLC
Seven Star LLC supplies the Bruel and Kjaer VC-868/0 vibration monitor for machinery protection projects across the Gulf, with verified specifications and technical support. Our team assists with replacement planning and integration with vibration monitoring systems.
We serve rotating equipment and maintenance teams with reliable B2B supply of vibration monitoring hardware throughout the GCC.
Installation & Operation
The device is powered from the 115 or 230 volt supply and connected to the vibration sensors and alarm outputs of the machinery protection system. The alarm outputs alert operators when the vibration level exceeds the set point.
For modernisation, the VIBROCONTROL 850 series provides the replacement with enhanced features while maintaining compatibility with existing setups.
Why Choose Seven Star LLC for the VC-868/0 Vibration Monitor
The VC-868/0 is legacy Bruel and Kjaer Vibro hardware, and Seven Star LLC’s role is to support facilities across Oman and the wider GCC that still rely on it while being honest about where its practical limits are. Before quoting a unit or a spare, we confirm the exact voltage variant (115 or 230 volt) and sensor interface against your existing panel wiring, since a mismatched supply configuration can damage the monitor or fail to trigger alarm outputs correctly. Where the original 868 family unit is difficult to source, we can advise on whether a genuine spare, a repair of your existing module, or a planned move to the VIBROCONTROL 850 series makes the most sense given your plant’s actual maintenance schedule and budget, rather than defaulting to whichever option is easiest for us to supply.
For facilities running several VC-868 units across a compressor or turbine train, we also help plan spares coverage around scheduled maintenance windows so a single alarm-output failure does not force an unplanned shutdown while a replacement is located. If your team is already evaluating the VIBROCONTROL 850 upgrade path, we can also help scope that transition against your current sensor wiring and alarm logic, so the modernisation is planned around your real installation rather than a generic recommendation.
Request a Quote for Bruel-Kjaer -VC-868/0 115/230v
For the Bruel and Kjaer VC-868/0 vibration monitor or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your measurement range, connection and configuration, and our specialists will respond with a detailed commercial proposal and the official Bruel documentation.
Related Products
- Instruction Manual Brüel & Kjær Bruel-Kjaer VC-868/0 Vibration Monitor 115/230V Manual 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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