QuakeLogic Blog Archive

Dynamic Range of Analog Sensors and Data Loggers Explained

Dynamic range of analog sensors and data loggers shown as noise floor to saturation level in decibels and bits

In short: Dynamic range is the ratio, expressed in decibels, between the smallest signal above the noise floor and the largest signal before saturation that a sensor or data logger can capture. A seismic accelerometer may offer 130 to 140 dB, so the logger must match it: a 24-bit logger resolves 16,777,216 levels and a 32-bit logger 4,294,967,296, while correct gain keeps weak signals above noise without clipping strong ones.

When dealing with measurement systems—whether for seismic monitoring, environmental sensors, or industrial applications—it is essential to understand key technical specifications such as the dynamic range of both analog sensors and data loggers.

The dynamic range plays a critical role in determining the accuracy and sensitivity of your measurement system. In this blog post, we’ll explore what the dynamic range is, why it matters, and how it relates to both analog sensors and data loggers.

Additionally, we’ll cover the role of gain values in data loggers, and explain the significance of decibels (dB) and bit resolution, including 24-bit and 32-bit resolution, in improving data quality.

What is the Dynamic Range of an Analog Sensor?

The dynamic range of an analog sensor refers to the ratio between the smallest and largest signals that the sensor can accurately measure. In other words, it represents how sensitive the sensor is to both weak and strong signals, without losing fidelity or generating too much noise. Dynamic range is typically expressed in decibels (dB) and is a critical specification, as it tells you how well the sensor can detect subtle variations in the physical parameter it is measuring—whether it’s vibration, temperature, pressure, or another input.

  • Low-End Detection: The smallest signal detectable by the sensor, known as the noise floor.
  • High-End Detection: The maximum signal the sensor can measure before it saturates.

Real-Life Example: Let’s consider a seismic accelerometer used to detect ground vibrations. Suppose the dynamic range of the sensor is 130 dB. This means the accelerometer can measure both very faint ground movements caused by small earthquakes, as well as strong ground shaking from large seismic events. A sensor with a low dynamic range would struggle with capturing weak signals and could easily become overwhelmed by strong vibrations, leading to data loss.

Dynamic Range of a Data Logger

The dynamic range of a data logger refers to the range of input signals that the logger can record and store without distortion. The dynamic range in data loggers is crucial because it determines the extent of accurate data recording, across both very weak and very strong signals coming from the sensor. This is particularly important when the signal you are measuring fluctuates in intensity, such as during an earthquake or in a dynamic industrial environment

While sensors convert physical parameters into electrical signals, it is the data logger’s job to capture these signals and store them for later analysis. The dynamic range of the data logger determines how well it can handle the full spectrum of signal intensities coming from the sensor.

  • Resolution: The resolution of a data logger is closely tied to its dynamic range. Resolution is typically measured in bits (e.g., 12-bit, 16-bit, 24-bit, 32-bit). The higher the resolution, the more detailed the logger’s recording capability, and the better it is at differentiating between small variations in the signal.

Understanding Decibels (dB) in Dynamic Range

What is dB?
Decibels (dB) are a logarithmic unit used to express the dynamic range. Since dynamic range involves very large ratios (e.g., the ratio between the smallest detectable signal and the maximum signal), using a linear scale would be impractical. The decibel scale compresses this large range into a manageable number that is easier to interpret.

How Does dB Affect Data Quality?

  • A higher dynamic range in dB means the system can handle a wider range of signals, from the weakest to the strongest, without distorting the data.
  • For example, a seismic sensor with a dynamic range of 140 dB can capture both the faintest microtremors and the strongest ground shaking from an earthquake without losing data fidelity.
  • If the dynamic range is too low, the system may either miss faint signals or distort strong signals, leading to compromised data quality.

Example: Consider two sensors, one with a dynamic range of 80 dB and another with 120 dB. If both are used to measure faint vibrations in a laboratory setting, the sensor with the lower dynamic range might fail to detect some of the subtler movements, while the sensor with 120 dB will capture the full range of vibrations without losing data.

How Gain Affects the Dynamic Range in Data Loggers

Gain is a crucial setting in a data logger that amplifies the incoming signal from the sensor. By increasing the signal, gain allows the data logger to make better use of its dynamic range. However, if gain is set too high, it can push the signal beyond the logger’s maximum recording capacity, resulting in distortion or “clipping” of the data.

Conversely, if the gain is set too low, weak signals may not be amplified enough, making them indistinguishable from background noise. A well-calibrated gain setting ensures that the logger uses its entire dynamic range effectively.

Example: In a vibration monitoring system for machinery, if the incoming vibrations are too weak, increasing the gain will make those small signals more distinguishable to the data logger, allowing for more accurate diagnostics of potential machinery faults. On the other hand, if the gain is too high, strong vibrations could overwhelm the data logger, causing it to miss critical details about how the machinery is behaving.

Understanding Bit Resolution and the Importance of 24-Bit and 32-Bit Resolutions

What is Bit Resolution?

Bit resolution refers to the ability of a data logger to measure variations in the input signal. It determines how finely the signal can be divided into discrete levels. The number of bits indicates how many levels the signal can be segmented into, with higher bit resolution offering more precision.

For example:

  • A 12-bit data logger divides the signal into 2^12 (4096) discrete levels.
  • A 24-bit data logger divides the signal into 2^24 (16,777,216) discrete levels.
  • A 32-bit data logger divides the signal into 2^32 (4,294,967,296) discrete levels.

How Does Bit Resolution Impact Data Quality?

Higher bit resolution allows a data logger to capture finer details in a signal, leading to more accurate and precise data representation. A logger with higher bit resolution, such as 24-bit or 32-bit, is capable of distinguishing subtle variations in the input signal that lower-resolution loggers might overlook or misinterpret.

24-Bit Example:

In applications such as seismic data logging, where capturing even the smallest ground motions is essential, a 24-bit data logger is highly preferred. Its higher precision enables it to detect micro-level vibrations that a lower-resolution logger (such as 16-bit) might miss. For instance, a 16-bit logger might round off or fail to capture these small variations, resulting in a loss of crucial information, particularly when dealing with low-amplitude signals.

32-Bit Example:

A 32-bit data logger takes resolution even further, dividing the signal into billions of discrete levels. This becomes particularly useful in high-precision applications where extremely wide dynamic ranges are involved, such as in research laboratories, aerospace, or when recording large seismic events. During an earthquake, for example, a 32-bit logger ensures that even the smallest ground tremors are captured with the same accuracy as the highest-intensity movements. This wide dynamic range ensures no data is lost, even when dealing with both very weak and very strong signals simultaneously.

Conclusion: The Value of Higher Bit Resolutions

Both 24-bit and 32-bit resolutions significantly improve the precision and quality of data capture, especially in scenarios requiring detailed and high-dynamic-range signal recording. The higher the bit resolution, the more granular the data, making it easier to capture both subtle and high-amplitude signals accurately. In high-stakes applications like seismic monitoring or scientific research, utilizing a data logger with the appropriate bit resolution—such as 24-bit or 32-bit—ensures you obtain the most accurate and actionable data possible.gger can accurately capture both the small aftershocks and the intense main event, providing a comprehensive picture of the seismic activity.

Real-Life Applications and Examples

  1. Seismic Monitoring in Earthquake Zones
    In seismic monitoring systems, both the sensors and the data loggers need to have a wide dynamic range and high resolution. Earthquakes can generate both very small ground movements (microtremors) and extreme shaking during a large event. For example, high-quality seismic systems may use accelerometers with a dynamic range of up to 140 dB and data loggers with 24-bit resolution, ensuring they can capture a full range of ground motion accurately. The gain settings in the data logger would be adjusted based on the expected magnitude of the earthquakes.
  2. Industrial Vibration Monitoring
    In an industrial setting, such as a manufacturing plant, monitoring machinery vibrations is key to predictive maintenance. Sensors might have a dynamic range of around 120 dB to detect both subtle vibrations caused by early-stage faults and stronger signals from fully developed mechanical issues. The data logger’s dynamic range would need to match or exceed this to ensure that no data is lost during high-intensity events. A 24-bit data logger would provide the fine precision needed to detect even the smallest anomalies in vibration patterns.
  3. Environmental Monitoring in Remote Locations
    For environmental monitoring, where temperature, humidity, or air pressure needs to be tracked over time, the dynamic range of both the sensors and data loggers should be sufficient to handle extreme changes, particularly in remote areas with harsh climates. A 24-bit data logger can ensure that even minute changes in temperature or pressure are recorded with high precision, providing more reliable data for long-term studies.

Conclusion

Understanding the dynamic range of both analog sensors and data loggers, as well as the impact of bit resolution (e.g., 24-bit), is crucial for designing accurate and reliable measurement systems. Whether you are monitoring seismic activity, industrial machinery, or environmental conditions, these specifications define the limits of what you can measure and record.

  • Dynamic Range of Sensors: Defines the range of physical inputs (e.g., vibrations, temperature) the sensor can detect.
  • Dynamic Range of Data Loggers: Determines the range of sensor outputs that can be accurately recorded and stored.
  • dB and Resolution: Higher dB values and higher bit resolutions (e.g., 24-bit) mean better sensitivity and more precise data recording.
  • Gain Settings: Allow fine-tuning of the system to optimize performance for the expected signal strength.

By selecting components with compatible dynamic ranges and optimizing gain and resolution settings, you can ensure high-quality, precise data collection across a variety of real-world applications.

For more information about optimizing your system’s dynamic range and choosing the right data logger and sensor, feel free to reach out to us at QuakeLogic. We specialize in advanced monitoring systems designed for reliability and accuracy across diverse fields.

About QuakeLogic

QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

Contact Information:

For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.

Key Takeaways

  • Dynamic range in dB spans from the noise floor (smallest detectable signal) to the saturation level (largest undistorted signal).
  • High-quality seismic systems pair accelerometers of up to 140 dB dynamic range with 24-bit data loggers.
  • A 12-bit logger resolves 4,096 levels, 24-bit resolves 16,777,216 and 32-bit resolves 4,294,967,296.
  • Gain set too high clips strong signals; gain set too low leaves weak signals buried in background noise.
  • Industrial vibration monitoring typically needs about 120 dB sensor dynamic range and a 24-bit logger for early fault detection.

Frequently Asked Questions

What is the dynamic range of an analog sensor?

The dynamic range of an analog sensor is the ratio between the smallest signal it can resolve above its noise floor and the largest signal it can measure before saturating, expressed in decibels. A seismic accelerometer with 130 dB dynamic range records faint microtremors and strong shaking with the same instrument; a sensor with low dynamic range misses weak signals or distorts strong ones.

Why is dynamic range expressed in decibels?

Dynamic range covers enormous ratios between the weakest and strongest measurable signals, so a linear number would be unwieldy. The decibel is a logarithmic unit that compresses that ratio into a manageable figure: a 120 dB sensor handles a far wider span than an 80 dB sensor and will capture subtle laboratory vibrations that the lower-range sensor misses entirely.

What is the difference between a 24-bit and a 32-bit data logger?

Bit resolution sets how finely a logger divides its input range. A 24-bit data logger resolves 2^24, or 16,777,216, discrete levels and is the standard choice for seismic monitoring because it captures micro-level ground motion a 16-bit logger would round off. A 32-bit logger resolves 2^32, about 4.29 billion levels, which helps when very weak and very strong signals, such as aftershocks and a mainshock, must be recorded with equal accuracy.

How does gain affect the dynamic range of a data logger?

Gain amplifies the sensor signal before digitizing so the logger uses its full dynamic range. If gain is too high, strong events exceed the input range and the record clips; if too low, weak signals stay indistinguishable from background noise. Operators set gain based on the expected signal level, for example the anticipated earthquake magnitude or machinery vibration amplitude.

Does the data logger need the same dynamic range as the sensor?

Yes, the data logger's dynamic range should match or exceed the sensor's, otherwise the logger becomes the bottleneck and discards information the sensor captured. For a 120 dB industrial vibration sensor or a 140 dB seismic accelerometer, a 24-bit or 32-bit logger with correctly set gain preserves both the faintest and the strongest parts of the signal.

Need help with a project? QuakeLogic designs and supplies seismic monitoring, earthquake early warning, structural health monitoring, infrasound, and shake table systems. Browse QuakeLogic products or contact our engineering team with your site, structure, or test requirements.

Earthquake Early Warning Policy: A Sample Facility Template

PX-01 Cube wall-mounted earthquake early warning display linked to a P-ALERT P-wave sensor in a facility

In short: Every facility needs an earthquake early warning policy because warning technology only saves lives when people know who is responsible, where alarms are, and what to do in the seconds an alert provides. This sample policy for P-ALERT P-wave sensors and PX-01 Cube wall displays defines installation, a three-phase response (P-wave alert, S-wave alarm, post-earthquake), roles, monthly system tests, annual inspections and quarterly drills.

Earthquakes are unpredictable, but your facility’s response doesn’t have to be. Implementing an Earthquake Early Warning System (EEWS) is essential for protecting your employees, infrastructure, and operations from seismic events. However, simply having the technology in place isn’t enough—having a clear, comprehensive policy ensures that everyone knows exactly how to respond when an earthquake occurs.

An Earthquake Early Warning System Policy provides critical guidelines for the operation, maintenance, and response protocols associated with advanced technologies like P-ALERT family sensors and PX-01 Cube wall-mount display and alarms. This policy outlines how the system functions, where it’s installed, who’s responsible for it, and—most importantly—how to react when an alert is triggered. Without a well-defined policy, even the best early warning systems can fail to deliver their full potential in safeguarding lives and assets.

Having a structured policy ensures:

  • Clear responsibilities for personnel at every level
  • Efficient use of warning time provided by earthquake alerts
  • Consistent, rehearsed responses through regular drills and training
  • Ongoing system maintenance and improvements based on real-world feedback

Below is a sample policy that you can use as a starting point to implement an earthquake early warning system using our technologies. It’s designed to keep your people safe and your facility prepared in the face of seismic events.

Implementing an Earthquake Early Warning System: Sample Policy

When it comes to protecting your facility from the unpredictable nature of earthquakes, having an effective Earthquake Early Warning System (EEWS) can make all the difference. With the right technology, you can significantly reduce the risk of injuries, protect your infrastructure, and ensure operational continuity. Below is an example of a comprehensive policy that can be implemented using the P-ALERT earthquake detection sensor and PX-01 Cube wall-mount display and alarm technologies.

Seismic monitoring instrumentation for "Why Every Facility Needs a Comprehensive Earthquake Early Warning Policy"

Objective:

The primary goal of this policy is to establish a robust earthquake early warning system that leverages P-ALERT sensors and PX-01 Cube displays. The system aims to provide timely warnings that will allow personnel to take protective actions and reduce potential damage to critical assets.

Scope:

This policy applies to all employees, contractors, and visitors on-site, addressing the installation, operation, and ongoing maintenance of the earthquake early warning system.

System Overview:

  1. P-ALERT System:
    The P-ALERT is an advanced P-wave detector designed to detect seismic activity at its earliest stages. It uses cutting-edge Pd technology and can identify the less-damaging P-waves before the more destructive S-waves hit. Once an event is detected, P-ALERT sends signals to the PX-01 Cube for immediate action.
  2. PX-01 Cube:
    The PX-01 Cube is a smart wall-mounted alarm that can operate as a standalone device or as part of a central network. It displays earthquake warnings, countdowns for S-wave arrivals, and other critical information like tsunami alerts and aftershock warnings, providing a clear and actionable interface during emergencies.

System Installation and Configuration:

  1. Sensor Placement:
  • Install P-ALERT devices at critical structural points to ensure complete coverage and reliable detection.
  • High-occupancy areas and vital infrastructure should be prioritized during sensor deployment.
  1. PX-01 Cube Location:
  • PX-01 Cube units should be placed in highly visible locations such as control rooms, hallways, and entry points.
  • Ensure that alarms and visual warnings are prominently displayed to all personnel.

2. Network and Power Redundancy:

    • Connect the PX-01 Cube to a local network for real-time data flow between P-ALERT devices and the central warning system (if applicable).
    • Equip the system with an Uninterruptible Power Supply (UPS) to maintain functionality during power outages triggered by seismic events.

    Alert System Functionality:

    1. P-Wave and S-Wave Detection:
      The system provides a layered response:
    • P-Wave Detected: The PX-01 Cube will display countdown information, giving employees vital seconds to prepare for the S-wave.
    • S-Wave Alarm: The alarm will immediately activate once the S-wave is imminent, prompting personnel to take action.

    2. Additional Display Capabilities:
    The PX-01 Cube can also display essential information such as:

      • Alerts from a USGS earthquake early warning system

      Procedures for Action During an Earthquake Alert:

      1. Phase 1: P-Wave Alert (Pre-Earthquake Warning)
      • The PX-01 Cube will sound an alarm and display countdown information.
      • Employees should cease any hazardous activities, move away from unsafe areas, and follow pre-determined safety procedures.
      • Designated staff should secure high-risk materials and equipment.

      2. Phase 2: S-Wave Alarm (Shaking Imminent)

        • The S-wave alarm signals immediate danger. Employees must take cover using the Drop, Cover, and Hold On protocol.
        • Personnel outside buildings should move to safe, open spaces.

        3. Phase 3: Post-Earthquake

          • After the shaking stops, supervisors will assess the damage and determine whether an evacuation is necessary.
          • Employees will gather at designated evacuation points for further instructions.

          Roles and Responsibilities:

          1. Safety Committee:
          • Oversee the system’s implementation and conduct regular policy reviews.
          • Ensure all staff are trained and prepared for earthquakes through drills.
          • Adjust policies based on feedback from post-event reviews.
          1. System Administrators:
          • Maintain and monitor the system’s functionality, ensuring that sensors and displays are always operational.
          • Troubleshoot any connectivity issues between P-ALERT and the PX-01 Cube.

          2. Employees:

            • Participate in regular earthquake drills and training.
            • Respond quickly and appropriately to alarms.
            • Report any technical problems with the system.

            Maintenance and Testing:

            1. Routine System Testing:
            • Test the system monthly to confirm operational readiness.
            • Perform annual inspections of all hardware and software.

            2. Drills and Training:

              • Conduct earthquake drills quarterly to ensure employees understand the system and know how to respond.
              • Provide onboarding training for new employees.

              3. Issue Reporting:

                • Employees should report any malfunction or false alarms immediately.
                • System administrators will maintain a log of issues and resolutions for continuous improvement.

                Continuous Improvement:

                1. Post-Earthquake Review:
                  After any significant seismic event, the safety committee will review the performance of the EEWS, evaluate employee responses, and identify areas for improvement.
                2. Annual Policy Update:
                  The policy will be reviewed annually or after any major earthquake to incorporate advancements in technology and updated best practices.

                Conclusion:

                Implementing an earthquake early warning system using P-ALERT and PX-01 Cube technology provides a crucial layer of safety for your facility. By adhering to a well-defined policy, your organization can ensure the protection of both personnel and infrastructure while maintaining preparedness for seismic events.

                This example policy demonstrates how you can structure your own implementation for the P-ALERT and PX-01 Cube combination. Adapt it to your facility’s specific needs, and take advantage of the timely warnings these technologies provide to mitigate earthquake risks effectively.

                Seeing is Believing – Contact us today to schedule a demonstration of our state-of-the-art earthquake early warning solutions.

                QuakeLogic Customer Satisfaction

                About QuakeLogic

                QuakeLogic is a leading provider of advanced earthquake early warning systems, seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

                Contact Information:

                For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.

                Key Takeaways

                • P-ALERT detects the less damaging P-wave first and signals the PX-01 Cube, which shows a countdown to the destructive S-wave.
                • Response has three phases: P-wave alert (stop hazardous work), S-wave alarm (Drop, Cover, Hold On), post-earthquake assessment.
                • Install P-ALERT at critical structural points and PX-01 Cubes in control rooms, hallways and entry points, with UPS backup.
                • Test the system monthly, inspect hardware annually, hold earthquake drills quarterly and train new employees at onboarding.
                • A safety committee reviews performance after any significant event and updates the policy annually.

                Frequently Asked Questions

                What should an earthquake early warning policy include?

                An earthquake early warning policy should state the objective and scope, describe the system (sensors and alarm displays), specify sensor and display placement, network and UPS power redundancy, the alert phases and the required actions in each, roles for a safety committee, system administrators and employees, a maintenance and testing schedule, drill frequency, issue reporting and a process for post-event review and annual update.

                How do P-ALERT sensors and the PX-01 Cube work together?

                P-ALERT is a P-wave detector using Pd technology that identifies the faster, less damaging P-waves before the destructive S-waves arrive. When it detects an event it sends a signal to the PX-01 Cube, a smart wall-mounted alarm that can run standalone or on a network. The Cube displays the warning, a countdown to S-wave arrival, and can show tsunami alerts, aftershock warnings and USGS early warning feeds.

                What should employees do when an earthquake early warning alarm sounds?

                During the P-wave alert, employees should stop hazardous activities, move away from unsafe areas and follow predetermined safety procedures while designated staff secure high-risk materials. When the S-wave alarm sounds, everyone indoors performs Drop, Cover, and Hold On and people outside move to open space. After shaking stops, supervisors assess damage, decide whether to evacuate and direct staff to designated assembly points.

                How often should an earthquake early warning system be tested?

                The sample policy calls for monthly system tests to confirm operational readiness, annual inspections of all hardware and software, and quarterly earthquake drills so employees know how to respond. Employees should report malfunctions or false alarms immediately, and system administrators keep a log of issues and resolutions. After any significant earthquake, the safety committee reviews system and staff performance.

                Where should earthquake early warning sensors and alarms be installed in a facility?

                P-ALERT sensors should be installed at critical structural points for complete coverage, prioritizing high-occupancy areas and vital infrastructure. PX-01 Cube displays belong in highly visible locations such as control rooms, hallways and entry points so alarms and visual warnings reach all personnel. The Cube should be connected to the local network and the whole system backed by an uninterruptible power supply.

                Need help with a project? QuakeLogic designs and supplies seismic monitoring, earthquake early warning, structural health monitoring, infrasound, and shake table systems. Browse QuakeLogic products or contact our engineering team with your site, structure, or test requirements.

                250-kg Uniaxial Shake Table for Precision Seismic Testing

                QuakeLogic 250 kg uniaxial shake table with 1 m by 1 m top plate and servo-motor drive

                In short: QuakeLogic's 250 kg uniaxial shake table combines a 1 m × 1 m top plate, 250 kg payload at ±1 g, ±200 mm stroke and closed-loop PID control driven by a servo motor. It is IP-based for remote operation, runs the EASYTEST software on any Windows PC without special cards, and is designed as a plug-and-play, low-power, virtually maintenance-free table for seismic testing in research labs.

                We are proud to unveil our latest innovation—the state-of-the-art 250-kg Uniaxial Shake Table. This cutting-edge piece of equipment is engineered to provide unparalleled accuracy and performance for seismic testing, making it an essential tool for engineers and researchers focused on advancing structural resilience and earthquake preparedness.

                Key Features

                • 1m x 1m Top Table: Ample space for a variety of test setups.
                • 250 kg Payload Capacity (@ ±1g): Designed to handle robust testing requirements.
                • ±200 mm Stroke: Provides the flexibility needed for detailed simulations.
                • Closed-Loop PID Control: Ensures precise control over testing parameters for reliable results.
                • Powered by a Servo Motor: Delivers smooth, quiet, and highly accurate operations, ideal for earthquake simulations.
                • Easy Setup, Plug & Play: Simplified installation allows you to start testing quickly, minimizing downtime.
                • Low Power Consumption: Designed with energy efficiency in mind, making it cost-effective to operate.
                • High Industrial Quality: Built to last, this shake table is virtually maintenance-free, offering long-term reliability.

                Seamless Integration and Remote Control

                One of the standout features of our 250-kg Uniaxial Shake Table is its IP-based system, allowing for remote operation and monitoring. Whether you’re in the lab or working from another location, you can maintain full control over your seismic tests. Additionally, the shake table comes equipped with QuakeLogic’s proprietary EASYTEST software, which operates smoothly on any Windows machine without the need for specialized computer cards or hardware.

                Designed for Efficiency

                The shake table’s compact and sleek design ensures a quick and effortless setup, allowing you to begin your testing with minimal hassle. Its virtually maintenance-free build means you can focus on your research, not on the upkeep of your equipment.

                Watch the Shake Table in Action

                Curious to see the 250-kg Uniaxial Shake Table at work? Click the YouTube link below to watch a live demonstration, including its control software in use:
                Watch Now

                shaketable 250kg youtube for "Newly-designed 250-kg Uniaxial Shake Table: Precision and Power for Testing"

                Learn More

                For detailed specifications or to see more information, visit our product page: QuakeLogic 250-kg Shake Table or contact us directly at sales@quakelogic.net.

                Join the ranks of engineers and researchers who are transforming seismic testing and building safer, more resilient infrastructure.

                Some of our recent clients are:

                • Nokia,
                • Caltech,
                • University of Texas,
                • Texas AM,
                • Virginia Tech,
                • Imperial College London,
                • UC San Diego,
                • Cooper Union University,
                • University of Alberta,
                • National Autonomous University of Mexico,
                • American University of Sharjah,
                • University of Queensland and many more.

                Why Choose QuakeLogic?

                1. Proven Performance: QuakeLogic’s shake tables have been installed and are in use at leading research facilities worldwide.
                2. Custom Solutions: Tailored configurations to meet specific testing needs, whether uniaxial or biaxial.
                3. Expert Support: Our team works closely with clients to ensure successful system installation, operation, and ongoing maintenance, offering full lifecycle support.
                QL customer satisfaction for "Biaxial Shake Table: Revolutionizing Seismic Testing Across Industries"

                About QuakeLogic

                QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

                Contact Information:

                For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.

                Key Takeaways

                • Specs: 1 m × 1 m top table, 250 kg payload at ±1 g, ±200 mm stroke, closed-loop PID control, servo-motor drive.
                • The IP-based controller allows remote operation and monitoring from inside or outside the lab.
                • EASYTEST software runs on any Windows machine with no specialized computer cards or hardware.
                • Servo-motor drive is quiet, low-power and virtually maintenance-free compared with hydraulic systems.
                • Installed at Caltech, UC San Diego, Imperial College London, Virginia Tech, University of Texas, Texas A&M, Nokia and others.

                Frequently Asked Questions

                What are the specifications of the QuakeLogic 250 kg uniaxial shake table?

                The 250 kg uniaxial shake table has a 1 m × 1 m top table, a 250 kg payload capacity at ±1 g acceleration, ±200 mm stroke, closed-loop PID control and a servo-motor drive. It is IP-based for remote operation, ships with EASYTEST control software for Windows, and is designed for plug-and-play setup, low power consumption and virtually maintenance-free operation.

                What does uniaxial mean on a shake table?

                A uniaxial shake table moves its top plate along a single horizontal axis. This reproduces one component of earthquake ground motion, which is sufficient for many structural model tests, equipment qualification runs and teaching labs, at lower cost and complexity than biaxial or triaxial tables. QuakeLogic offers both uniaxial and biaxial configurations and can tailor stroke, payload and table size.

                Does the 250 kg shake table need a hydraulic power unit?

                No. The table is driven by an electro-mechanical servo motor instead of hydraulic actuators, so there is no hydraulic power unit, oil or associated maintenance. The result is smooth, quiet operation, low power consumption and a compact footprint that can be installed quickly in a standard laboratory space without special facility work.

                What software controls the QuakeLogic shake table?

                The table is controlled by QuakeLogic's EASYTEST software, which runs on any Windows machine without specialized computer cards or additional hardware. Because the controller is IP-based, the operator can run and monitor tests from a PC in the lab or from another location over the network, and a demonstration of the software is available on QuakeLogic's YouTube channel.

                Which universities use QuakeLogic shake tables?

                Recent QuakeLogic shake table clients include Caltech, University of Texas, Texas A&M, Virginia Tech, Imperial College London, UC San Diego, Cooper Union, University of Alberta, the National Autonomous University of Mexico, American University of Sharjah, University of Queensland and Nokia. The tables are used for earthquake engineering research, structural model testing and teaching.

                Need help with a project? QuakeLogic designs and supplies seismic monitoring, earthquake early warning, structural health monitoring, infrasound, and shake table systems. Browse QuakeLogic products or contact our engineering team with your site, structure, or test requirements.