Dynamic Sensors & Calibration Tips Newsletter Archive

Accelerometers | Pressure | Microphones

For over 10 years, The Modal Shop’s Calibration Team has been devoted to producing monthly articles, news, and tips related to dynamic sensors and calibration. This ongoing project originated from our strong commitment to the metrology community and has continued because of measurement professionals such as yourself. We hope that you find the information you are looking for below – and welcome your comments and feedback for future articles.

145Understanding Microphone Comparison Calibration, Upgrade Your Acoustic Calibration Capabilities
141Selecting the Best Accelerometer for Your Test, Join Us for a Vibration Calibration Webinar Series
140Influential Impedance; Plus, Upcoming Shaker Testing Webinars
139The Critical Nature of Cables; Plus, ISO 17025 Proficiency Deficiencies
138Understanding Microphone Calibration Methods; Plus, Calibrating DC Response Accelerometers
137Understanding Mics: Externally Polarized vs Prepolarized; Plus, Why the word 'Hermetic' is important to your sensors
136Acoustic Directivity Demonstrated; Plus, Calibrating Digital Accelerometers
135Is that your natural frequency? Plus, Join Us for a Sensors and Calibration Seminar!
134Sound Level Meter Calibration; Plus, Understanding ISO17025
133Happy Holidays!
132Causes of Zero Offset in Acceleration Data; Plus the Importance of Calibration in Aerospace and Defense Applications
131Sensors and Thermal Effects; Plus, Potentially Confusing Uncertainty Contributors
130Anti-aliasing in Acoustic Measurements
129Is Cable Motion Effecting Your Measurements?
1284 Sensor Mounting Methods; Consequences at High Frequencies. Plus, How Shaker Design Affects Transverse Motion
127Is This Data Right? Troubleshooting Accelerometer Issues
126Basics of Acoustic Calibration; Plus, Acoustic Webinar Series
125Filtering Dynamic Force, Pressure, and Acceleration Signals; Plus, Plug-and-Play Sensors and Calibration
124Solutions for Cable Noise; Plus, Calibration and Resonance Questions and Answers
123Piezoelectric Sensing Geometries Explained; Plus, Calibrating Non-Symmetrical Accels
122All About Sensor Mounting: For Test Applications and Calibration
121Flutter and Shimmy: Flight Testing Accels Demystified; Plus, Understanding ISO16063 for Accelerometer Calibration
120Which Sensors Do I Use? GVT Edition
119When and Why? Sound Power Measurements Explained
118Sound Power Basics: Understanding ISO17025 Compliance
117Understanding Gain: Charge Amplifiers Explained
116Trust But Verify: Dynamic Calibration Best Practices
115High Temp Sensor Applications; ICP Calibration References
114A Focus on Shock and Reference Accelerometers
113Guide To Dynamic Force Sensors
112How Often Should I Recalibrate?
111Driving Long Cable Considerations
110Selecting a Reference Accelerometer
109Evaluation of Accelerometers for Pyroshock Performance in a Harsh Field Environment
108Triaxial Acceletometer Review
107IEEE 1451.4 - The Current Status of TEDS
106Ballistic Sensors Demystified
105What's in Your Vibration Testing Library?
104Sensors of Summer: Design for Underwater Applications
103Sound Practices: Microphone Standards, Handling and Calibration
102Aerospace and Defense Testing Considerations
101Understanding ISO 17025; Automotive Component Durability Testing
100Developments in Dynamic Sensing and Calibration
99Essential Sensor Cabling and Mounting Tips
986 Essential Shock Calibration Techniques
97Fundamentals of Accelerometer Calibration, Reducing Harmonic Distortion
96Equipment Warm-Up and Thermal Stability; Common Methods of Reducing Uncertainty
95What Should the Pulse Duration Be for Shock Calibration?; Ski Slope FFT Vibration Data: What Causes It and How Can It Be Fixed?
94How Does Relative Motion Affect My Calibration?; Accelerometer Frequency Range: A Tale of Two Specs
93Small Arms Ammunition Manufacturer's Institute (SAAMI) Discusses High Pressure Sensors and Calibration; Microphone Calibration Part II
92Accelerometer Calibration from a Risk Management Perspective; Microphone Calibration Part I
91Why is 100 Hz or 159.2 Hz the Reference Frequency?; Sound Power Basics
90ICP vs Charge Mode Sensors; Percent Difference vs Deviation In Accelerometer Calibration
89How Do I Calibrate DC Response Accelerometers?; How Does Shaker Design Affect Transverse Motion?
88How to Calibrate Your 4-20mA Current Loop Vibration Sensors; The Science of Accelerometer and Sensor Mounting
87How Do You Calibrate the Calibration System?; Eddy Current Probes Produce An Alarming Trend
86How Does Test Level Affect Sensitivity?; Calibrating Bently Nevada Velomitors with ICP Signal Conditioning
85Why the Word 'Hermetic' is Important to Your Piezoelectric Sensors; FAQ: When an Accelerometer Fails Calibration
84Know Your Standard: 16063; University of Buffalo Calibrates Seismic Sensors for Earthquake Simulation
83Potentially Confusing Uncertainty Contributors; Pressure Calibration Techniques
82Uncertain About Uncertainty? Certainly!; How to Calibrate Awkwardly-Shaped Accelerometers
81Guidelines Within Standards: Thou Shall, or Thou Should Think?
80New Calibration Units for Digital Accelerometers
79Your Feedback on Digital Smart Sensing; Ohio University Uses Shakes on Humans in Bone Density Testing
78Digital Smart Sensor for Vibration; University of North Dakota Uses Shaker in Unmanned Aerial Vehicle Testing
77Why Is It Important to Calibrate My Microphones?; KU Leuven Designs Alternative to Impedance Tube Testing
76Harvard Uses Shaker to Simulate Bumblebee Vibration Frequency; Dynamic Calibration Seminars
75Accelerometers for Health & Usage Monitoring Systems; Shock Tubes & Dynamic Pressure Characterization
74DIMM is a Bright Idea; HP Technology & Application Archive
73Load Cells: Overview & Design; World's Longest-Running Vibration Monitoring System
72Calibrate Our Own Accelerometers?; Monitoring Structural Dynamics with a Microphone
71Pressure Calibration in Ballistics Testing; Shakers & Accelerometers
70Methods for Field Calibration; Giant Crystal Cave Comes to Light
69Accelerometer Calibration - 'Trust But Verify'; Upcoming NIST Colloquium
68How Low Can Your DVM Go?; Non-Contact Displacement Sensor Calibration
67NIST to Reaffirm Vibration Calibration; Low Frequency Calibration Needs Support Standard ISO 8041:2005
66Does a Manufacturer's Nominal Spec Matter?; Technology Fundamentals of Microphone Types
65What's Happening at NIST?; Benefits of ICP Operation in Vibration Calibration References
64Accelerometer Calibration Simplified; Why Proper Mounting Is Essential
63Explaining Uncertainty; Video - Calibration Tutorial
62Tackling Tire Testing; Calibration Videos
61Lab Lessons Learned, Series 3; Videos on Mounting and Removing Sensors
60Lab Lessons Learned, Series 2; International Standard of Units Reference
59Lab Lessons Learned, Series 1; Principles of Dynamic Calibration
58Significance of Low Frequency Calibration; Technical Exchange Around the Country
57Double vs Single Ended Transfer Standard Reference Accel; Video Tutorial on Transverse Motion
56Low Outgassing Accelerometers and Cables; Back to Calibration Basics on the Exciter
55Q & A on General Trends in Vibration; First Time Quality
54Do's and Don'ts of Excitation Techniques; Interview with Professor David Brown
53What's Wrong with My Accelerometer; Industrial Vibration Accelerometer Performance
52Nontraditional Uses of ICP 'Power' New Sensors; Low Frequency Cal with Structural Gravimetric Technique
51Understanding ICP Sensor Bias; Devil is in the Calibration Details
50Language of Metrology; Novel Uses for Accelerometers
49Modal Excitation Tutorial; Purdue Center for Systems Integrity
48ED and Reference Limitations in Low Frequency Calibration; Multiple Component Order Tracking
47Accelerometer Mounting; Accelerometer Technologies and Performance Characteristics
46Handling Out-of-Calibration Equipment; How long should and accelerometer cable last?
45High Frequency Accelerometer Measurements
44Progress on MEMS Sensor; Evolution of Calibration Reference Accelerometer
43Long Stroke Precision Calibration Exciter; Calibrating the Calibration System
42Video on TEDS; Q&A on Calibration and Resonance Search
4110 Best Laboratory Practices; Can I create my own DVM?
40Aircraft Engine Monitoring Accelerometer Calibration and Control Charts Measurement Errors
39Primary Calibrations of Accelerometers and Dynamic Sensors for Extreme Environments
38Calibration Options and Practical Exciter Selection
37TEDS increases my uncertainty?
36Bone Health Monitoring; Vibration Videos; Transduction Types
35Accelerometer Technologies and Performance; Accelerometer Calibration
34Measurements Matter; Fundamentals of Modal Analysis
33Forced Ranking; The Decline in Quality
32Piezoelectric Transduction; Do I really need to calibrate?
31Back to Basics; Placebo Transducers
30Pyroshock Uncovered; Proficiency Testing
29Measurement uncertainty; PCB Accelerometers on Mythbusters
28Detail on ICPR and Tools for composite damage detection
27Shock vibration and calibration for Aerospace and Defense
26High temp vibration and hammer calibration
25Is my old cal shaker good enough
24Sensor & Cal Tips - Summertime Edition
23Decoding accel specs; Quality system deficiencies
22Proficiency Deficiency; TEDS
21ICP triaxial accels aid vehicle field diagnostics; New transverse methods of cal
20Low frequency calibration; Cable considerations
19Linearity and the small world
18Why calibrate; Accel selection considerations
17Low frequency accel cal; ICP options
16New development in accel cal; Industrial accels
15Interpreting cal results; Discharge time constant
14Proficiency in cal; Sensor considerations for NVH
13ESS accel considerations; Relative motion in cal
12Flight test accels; Random uncertainty
11Mechanical shock accel; More uncertainty contributors
10Facts about triax; Uncertainty redux
9Seismic accel; Uncertain about your cal
8What is ISO 17025; Modal array accels
7The trouble with cables; How to maintain cal integrity
6Ideal v real world accel behaviors; Primary v transfer cal
5Similarities between ICP and charge; Shock cal methods
4Which is better quartz or ceramic; What is piggyback cal
3Accel transduction types; Laser primary cal
2Shear, compression, flexure; ISO 16063 overview
1Basics of accel function; How standards link together