Why Battery-Powered Signal Generators Are Essential for Field Calibration?
Field calibration has always presented challenges, especially when dealing with AC-powered equipment. Ground loops caused by AC-powered bench supplies can introduce 60 Hz interference, compromising the accuracy of even the most advanced systems. In fact, something as invisible as a ground loop can cause a $50,000 turbine sensor system to fail calibration, leading to costly delays and unnecessary downtime. This issue becomes even more complicated when you're working in remote environments like aircraft hangars, offshore platforms, and power substations, where access to clean, stable power can be limited. AC-powered equipment not only introduces ground loop noise but also creates [...]
The Role of Test Signal Generators in Equipment Calibration and Verification
A miscalibrated measurement system can cause failed quality checks and significant downtime. Even the best electrical testers, sensors and analyzers are only as accurate as their calibration source. Despite this, many engineers overlook the signal generator in their calibration chain, and calibration without the right reference signal can lead to inaccurate readings, missed measurements, and costly errors no matter how precise the test equipment is. The challenge is distinguishing between stable, traceable test signal generators and generic function generators that lack the functionality for rigorous field calibration work. This guide explains how to select, implement, and verify signal generators [...]
Piezoelectric Signal Conditioning with MTI Charge Amplifiers: From Portable 55CA/41CA to Rack-Mount CA1800 Solutions
Piezoelectric sensors deliver critical data for turbine balancing, structural health monitoring, and vibration analysis, only when paired with proper signal conditioning. Extracting clean, phase-accurate signals in environments with electromagnetic interference, temperature shifts, and cable effects remains a persistent challenge. Signal conditioning bridges the gap between the sensor and the measurement system. MTI Instruments offers a comprehensive portfolio of charge amplifiers designed to address the challenges of piezoelectric signal conditioning challenges across diverse applications. From the portable 55CA and 41CA units engineered for field turbine balancing to the multi-channel CA1800 rack-mount system for laboratory testing, MTI's line-up provides scalable solutions for [...]
Accelerometer Signal Conditioning: From Charge to Voltage Conversion Explained
A piezoelectric accelerometer generates a tiny electrical charge when it vibrates. That charge, measured in picocoulombs, contains valuable information about machinery health, structural integrity, or performance characteristics. But here’s the problem: you can’t measure it reliably without proper signal conditioning. One of the fundamental challenges lies in the nature of the signal itself: high-impedance charge outputs generated by piezoelectric sensors versus the low-impedance voltage signals required by data acquisition systems and analyzers. Without proper signal conditioning, even the most accurate accelerometer can produce distorted, noisy, or unstable results. This creates a challenge for engineers working with vibration measurement systems. In [...]
GRINDING PROCESS
A cylindrical grinding process finishes most wheel spindle surfaces. It is essential that this grinding process leave a surface finish that is smooth and free of defects with minimal runout. No grinder produces a perfect surface. Grinder wheel runout, improperly dressed wheels and fixture vibrations can cause chatter on the spindle surface finish. Chatter is a series of microscopic, repetitive imperfections, or waves, in the surface of the material being machined. The required production environment sensor must have small spatial resolution, high frequency response and large standoff distance for easy loading and unloading of parts. Additionally, the measurement accuracy had to be [...]
Engine Test Cell Setup: Best Practices for Vibration Analysis
Vibration analysis is crucial in engine testing. It identifies issues, such as imbalance, misalignment, and wear. Whether testing jet engines, gas turbines for power generation, or APUs, a proper vibration analysis setup is vital for ensuring safety, performance, and reducing maintenance costs. Test cells simulate operational conditions. Accurate vibration analysis detects faults like rotor imbalance and bearing issues before failures occur, ensuring safe operation and minimized downtime. However, environmental factors such as electromagnetic interference, temperature variations, and structural noise can compromise measurement quality. This guide outlines best practices for effective vibration analysis, including sensor placement, cable management, and EMI [...]
Charge Mode vs. ICP Accelerometers: Selecting the Right Sensor and Signal Conditioning with MTI Charge Amplifiers
Turbines, engines, and rotating machinery require precise vibration measurements to prevent catastrophic failures and costly downtime. A single measurement error can mean the difference between scheduled maintenance and emergency repairs. Vitrek's MTI charge amplifiers deliver the signal conditioning that transforms raw sensor data into reliable measurements, even in the harshest industrial environments. Sensor selection, directly impacts measurement quality, system complexity, and operation costs. This post explores the key differences between charge and ICP accelerometers, explains how signal conditioning affects measurement accuracy, and helps clarify which technology best suits your specific application requirements. Understanding Piezoelectric Accelerometer Output Modes Piezoelectric accelerometers [...]
Load Cell Signal Conditioning with MTI Signal Generators: Precision Calibration and Measurement
Load cells are essential in modern engineering, providing accurate measurements of force, weight, and pressure across industries from manufacturing to aerospace. Engineers working with load cells face challenges like electromagnetic interference (EMI), temperature-induced drift, and bridge unbalance, which can affect measurement accuracy. Signal conditioning plays a crucial role in overcoming these obstacles by converting raw sensor outputs into clean, amplified signals for data acquisition systems. Load cells measure force, weight, and pressure by converting mechanical strain into electrical signals, typically in the millivolt range. Proper signal conditioning ensures linearity, repeatability, and precision across the measurement span. MTI Signal Generators [...]
Multi-Channel Micron Displacement Measurement: AS-500 Modular Systems for Production Line Integration
Production engineers face a critical question every day: How precise does a measurement really needs to be? Precision in manufacturing helps create a balance. Some applications require nanometer or even picometer accuracy, but many production line tasks are perfectly served with micron-level resolution. A micron displacement sensor delivers reliable, repeatable data with accuracy down to the micrometer scale. For industries focused on throughput, uptime, and cost efficiency, this level of precision is often exactly what’s required. What is the difference between nanometer and picometer sensors and micron displacement sensors? This post discusses the differences between these systems, introduces you [...]
Nanometer Displacement Sensors: Accumeasure D Series for High-Speed Industrial Metrology
Do you know how engineers spot defects that are far too small for the human eye, movements 80,000 times thinner than a sheet of paper? Detecting changes at this scale is only possible with nanometer displacement measurement, a technique that makes ultra-precise industrial monitoring both practical and reliable. It allows manufacturers to track these almost invisible shifts, such as detecting the tiniest vibration in a jet engine turbine blade before it affects performance or measuring the microscopic runout on a brake rotor to ensure smooth operation and safety. Even the thickness of a semiconductor wafer or a thin-film layer [...]