Vibration measurement and monitoring equipment constitute a critical component of maintenance, diagnostic, and protection systems for rotating machinery across various industries. The proper functioning of this equipment plays a decisive role in the timely detection of anomalies such as unbalance, misalignment, bearing failure, mechanical looseness, resonance, and dynamic instabilities. Consequently, professional and systematic repair of these devices not only restores their performance to standard specifications but also directly contributes to enhanced equipment reliability, a reduction in unplanned downtime, and the prevention of secondary damage. We provide repair, testing, inspection, and calibration services for a wide range of vibration equipment. These services encompass various devices utilized in condition monitoring and machinery protection systems, including the following:
Repair of portable vibration measurement devices
These services encompass electronic and mechanical troubleshooting, signal integrity verification, measurement accuracy checks, frequency response evaluation, and operational testing under working conditions. Damaged components are replaced as necessary, ensuring that the equipment can be reliably redeployed in industrial environments following repair.
Portable vibration measurement devices are among the most common tools used in periodic inspection programs, predictive maintenance, and field troubleshooting. These instruments are typically employed to measure parameters such as vibration acceleration, velocity, and displacement, as well as to assess bearing condition and, in some cases, perform general vibration analysis on rotating equipment. Malfunctions in these devices can lead to the recording of inaccurate data and erroneous assessments of a machine’s condition. The repair process for these units addresses issues such as display failures, defects in electronic circuit boards, power supply problems, battery or charger malfunctions, faults in measurement connectors, software glitches, and calibration errors. Following repairs, the device’s measurement accuracy is verified to ensure its performance remains reliable for condition monitoring applications.
Vibration sensors are the most critical component in the vibration measurement chain; the quality of their output signal directly impacts the analysis of machine condition. These sensors encompass various types, including accelerometers, vibration velocity transducers, and vibration transmitters. Regarding the evaluation and troubleshooting of contact-type vibration sensors, Yekan Company’s services primarily cover coil-based sensors, piezoelectric accelerometers, and MEMS-based sensors. This scope of work includes addressing issues such as connector failures, repairing vibration cables (both armored and unarmored), and performing precise sensor calibration (post-repair) based on sensitivity and frequency response testing.
In non-contact vibration measurement systems, a setup consisting of a proximity probe, an extension cable, and a proximitor forms the complete measurement chain for vibration displacement. This assembly is used to measure relative shaft vibration, the gap between the shaft and the bearing, and the axial position in rotating machinery. The repair process for this equipment involves the following checks:
Through these specialized inspections and repairs, the vibration displacement measurement system can be restored to proper operation, allowing the equipment to be reused within machine protection systems.
Mechanical vibration switches are among the simplest yet most critical protective devices used in a wide range of industrial machinery. These switches are typically employed to trigger an alarm or initiate a shutdown command when machine vibration levels exceed a specified threshold. During the repair process, the internal actuation mechanism, electrical contacts, springs, mounting bases, and adjustment screws are inspected, and the device’s operational integrity at the trip point is verified. Over time, the settings of these switches may drift, or internal components may suffer from wear and tear—issues that can lead to the malfunction of the protection system.
As the manufacturer of the MS60 vibration switch—and leveraging specialized technical expertise in mechanical switches—Yekan Company offers comprehensive services for all major brands. These services include the following:
Yekan Company’s objective goes beyond mere fault repair; we aim to enhance the reliability and extend the service life of your vibration switches.
Vibration monitoring systems are employed for the continuous condition monitoring of critical machinery, such as turbines, compressors, generators, and process pumps. These systems typically measure and monitor parameters including shaft vibration, casing vibration, axial position, rotational speed, and vibration phase. Yekan Group serves as a primary supplier of components for Bently Nevada 3300 and 3500 series monitoring systems, catering to the power generation, steel, oil, gas, and petrochemical industries. During the repair process, components—such as input modules, processing cards, power supplies, racks, relay modules, signal conditioning circuits, and the interconnections between sensors and cards—are thoroughly inspected to ensure the system functions correctly under actual operational conditions.
In the maintenance of vibration equipment, calibration devices play a crucial role in ensuring measurement accuracy. Tools such as the TK3 Proximity System Test Kit—widely used in calibration laboratories and various industries—are employed to test and adjust proximity system loops. These devices allow for the verification of parameters such as output voltage, signal linearity, and the overall proper functioning of the measurement system. During the repair of calibration devices, components such as electronic circuits, signal generation modules, displays, test connections, and power supply units are inspected and, if necessary, repaired or adjusted. The operational accuracy of these devices is of great importance, as many testing and adjustment procedures for proximity systems rely on the results they provide.
Vibration shakers are essential equipment in laboratories dedicated to the calibration and testing of vibration-related devices. These instruments are used to generate controlled vibrations at specific amplitudes and frequencies, enabling the testing of vibration sensors and measurement equipment. During the repair of vibration shakers, components such as the electrodynamic drive system, coils, drivers, frequency control circuits, the vibration table, feedback sensors, and mechanical connections are inspected. A failure in any of these parts can lead to errors in the amplitude or frequency of the generated vibration, thereby compromising the accuracy of the calibration process. Consequently, the precise repair and adjustment of this equipment are of critical importance to ensure proper performance within testing and calibration laboratories.
