Essential Guide to Scaling SA10 Accelerometer with SL06 Data Logger

When deploying high-precision seismic monitoring systems, ensuring proper scaling between the accelerometer and the data logger is critical. In this technical guide, we explain how to verify the SARA SA10 Force Balance Accelerometer (FBA) when used with the SL06 24-bit Data Logger, including how to calculate the digital transduction factor using a simple field method.

This procedure is commonly performed during installation, commissioning, or periodic system verification.

Overview: SA10 Force Balance Accelerometer (FBA)

The SARA SA10 is a professional-grade force balance accelerometer designed for:

  • Seismic monitoring networks
  • Structural health monitoring (SHM)
  • Earthquake early warning systems
  • Industrial vibration measurement
  • Research and academic applications

Each SA10 sensor is delivered with an individual factory calibration test report specifying:

  • Serial number
  • Nominal sensitivity
  • Calibration constants
  • Functional verification results

Nominal Sensitivity Options

The SA10 is typically supplied in one of two configurations:

  • 5 V/g
  • 10 V/g

When connected to the SL06 data logger configured with a ±10 V input range (20 Vpp total dynamic range), only two corresponding transduction scaling configurations are possible.

Proper scaling ensures that digital counts recorded by the SL06 accurately represent acceleration in engineering units (g).

Understanding the Transduction Factor

The transduction factor converts raw digital counts into acceleration units (g).

Acceleration Formula

Acceleration (g) = Counts × Transduction Factor

Correct scaling is essential for:

  • Accurate waveform analysis
  • Peak Ground Acceleration (PGA) calculations
  • Structural response studies
  • Regulatory reporting

Field Verification Using the Gravity Flip Method

One of the advantages of force balance accelerometers is the ability to perform a simple field verification using gravity as a reference.

Step-by-Step Procedure

  1. Power on the SL06 logger and confirm recording.
  2. Verify that the channel input range is set to ±10 V.
  3. Place the SA10 sensor on a stable, level surface.
  4. Carefully rotate the sensor so that one sensitive axis aligns with gravity (+1 g).
  5. Observe the digital counts displayed or recorded.

Example Transduction Factor Calculation

Assume the SL06 records approximately:

4,194,304 counts ≈ 1 g

The transduction factor is calculated as:

Transduction Factor = 1 g / 4,194,304 counts
Transduction Factor = 0.000000238 g/count

This means:

  • Each count represents 0.000000238 g
  • Scaling can be validated quickly in the field
  • System performance can be confirmed without laboratory equipment

What to Look For During Verification

A properly functioning SA10 + SL06 system should show:

  • Symmetric +1 g and −1 g values
  • Stable readings without excessive noise
  • No clipping or saturation
  • Consistency with the factory calibration report

If values are inconsistent:

  • Verify wiring and grounding
  • Confirm input range configuration
  • Check sensor orientation
  • Review factory calibration documentation

Important Notes

The gravity flip method:

  • Is intended for functional field verification
  • Does not replace accredited laboratory calibration
  • Is not a substitute for traceable recalibration when contractually required

For projects requiring traceable recalibration services, contact QuakeLogic directly.

Why Proper Scaling Matters

Improper transduction configuration can lead to:

  • Underreported or exaggerated acceleration values
  • Incorrect structural response analysis
  • Faulty earthquake early warning thresholds
  • Data rejection in research publications

Ensuring proper SA10 scaling with the SL06 logger protects both data integrity and system reliability.

Conclusion

The combination of the SARA SA10 FBA sensor and the SL06 24-bit data logger provides high dynamic range and low-noise seismic recording suitable for professional monitoring applications.

Using the simple gravity flip verification method, field engineers can quickly confirm:

  • Sensor polarity
  • Scaling accuracy
  • Digital transduction factor
  • Overall system functionality

For more information about SA10 sensors, SL06 dataloggers, or complete seismic monitoring systems, contact QuakeLogic Inc.

Why Vertical Seismic Testing Matters for Safety

In seismic design, nonstructural components—such as mechanical equipment, electrical systems, architectural elements, and mounted devices—often govern life-safety risk during earthquakes. To address this, the building-code community relies on a standardized testing protocol known as AC156.

This article explains what AC156 is, why vertical (Z-axis) testing matters, and how QuakeLogic’s SHAKEBOT-40Z enables AC156-style vertical seismic demand testing for laboratories, manufacturers, and research institutions.

What Is AC156?

AC156 is the Acceptance Criteria for Seismic Qualification Testing of Nonstructural Components, published by ICC Evaluation Service (ICC-ES).

AC156 defines how shake-table testing must be performed to demonstrate that nonstructural components can safely withstand seismic demand required by modern U.S. building codes, including the International Building Code (IBC) and ASCE 7.

Important:
AC156 is not a product certification.
It is a testing methodology used to evaluate component performance.

Why Vertical (Z-Axis) Seismic Testing Matters

While AC156 is commonly associated with horizontal (X- and Y-axis) testing, vertical seismic demand is critical for many components, especially those subject to:

  • Uplift forces
  • Compression–tension cycling
  • Anchor bolt pull-out
  • Loss of gravity load path
  • Vertical resonance effects

Vertical testing is particularly relevant for:

  • Rooftop and floor-mounted equipment
  • Suspended or braced systems
  • Racks, cabinets, and electrical assemblies
  • Anchored mechanical and piping components

As vertical ground motion becomes better understood, AC156-style vertical testing is increasingly requested by engineers of record, hospitals, and code reviewers.

How AC156 Testing Works (Simplified)

AC156 specifies:

  • Required Response Spectra (RRS) derived from seismic design parameters
  • Broad-band random motion, not simple sine sweeps
  • Acceleration verification at the shake table and test article
  • Defined test duration and repetition
  • Performance criteria, including:
    • No collapse or detachment
    • Anchorage integrity
    • Continued function when required

Compliance depends on test execution, instrumentation, and engineering judgment—not on the shake table alone.

Introducing the SHAKEBOT-40Z Vertical Shake Table

The SHAKEBOT-40Z is QuakeLogic’s compact, high-performance single-axis vertical (Z-axis) shake table, purpose-built to apply controlled vertical acceleration, displacement, and frequency content representative of AC156 vertical seismic demand.

According to the official datasheet, the SHAKEBOT-40Z is designed to support AC156-style vertical testing, including uplift–compression response and controlled seismic time histories.

Key Capabilities for AC156-Style Vertical Testing

Purpose-Built Vertical Motion

The SHAKEBOT-40Z delivers pure Z-axis excitation, allowing laboratories to isolate vertical demand without horizontal coupling.

Closed-Loop Motion Control

High-resolution feedback enables repeatable vertical acceleration and displacement profiles, a core requirement for standardized seismic qualification testing.

Custom Seismic Inputs

Users can apply custom vertical time histories (CSV) derived from AC156-compatible spectra or site-specific motions, supporting both research and qualification testing.

Safety-Focused Design

Integrated software limits, mechanical end-stops, torque protection, and emergency stop functionality ensure safe operation during high-demand tests.

Typical Applications

The SHAKEBOT-40Z is well suited for:

  • AC156-style vertical seismic qualification testing
  • Uplift and compression response studies
  • Z-axis demand evaluation of nonstructural components
  • Academic and applied research on vertical ground motion
  • Laboratory instruction and demonstration testing

These applications are explicitly identified in the system documentation.

Why Laboratories Choose QuakeLogic

QuakeLogic designs shake-table systems that balance:

  • Technical rigor
  • Compact laboratory footprint
  • Cost-effective deployment
  • Reviewer-safe documentation
  • Cross-platform software control

The SHAKEBOT-40Z extends this philosophy into vertical seismic testing, filling a critical gap for labs and manufacturers addressing Z-axis demand.

Learn More

📄 Download the SHAKEBOT-40Z Datasheet
👉 shakebot-40z-vertical-shake-table-datasheet.pdf

📧 Questions about AC156 testing or vertical qualification?
Contact sales@quakelogic.net

🪐 SATURN Series Smart Seismic Switch — Intelligent Earthquake Detection for Industrial Safety

Revolutionizing Earthquake Safety for Industrial and Commercial Systems

In a world where every second counts, QuakeLogic’s SATURN Series Smart Seismic Switch delivers instant earthquake detection and control designed to protect critical infrastructure and operations. Built on cutting-edge digital sensing technology, SATURN offers unmatched reliability, precision, and compliance — setting a new benchmark for seismic safety automation.

Intelligent Detection. Instant Protection.

The SATURN Series uses an advanced solid-state tri-axial seismic sensor to continuously monitor ground acceleration (PGA) in three dimensions (X, Y, and Z). When an earthquake occurs, the system instantly detects both P-waves and S-waves, calculates seismic intensity, and triggers connected safety mechanisms such as:

  • Equipment and motor shutdowns
  • Elevator recalls to safe floors
  • Door and solenoid control
  • Facility-wide alarm or PA notifications

This intelligent, plug-and-play seismic switch ensures your operations are protected automatically — even when power is disrupted, thanks to its integrated battery backup and external charger.

Built for Harsh Environments and Critical Infrastructure

Engineered to perform in demanding industrial and commercial settings, SATURN is the ideal solution for:

  • Control rooms and manufacturing facilities
  • Refineries, power plants, and water treatment plants
  • Rail systems, data centers, and hospitals
  • OEM integrations and automation systems

The unit’s rugged aluminum housing, sealed electronics, and false-trigger immunity make it highly resistant to noise from heavy machinery, compressors, trains, or elevators.

Compliance You Can Trust

The SATURN Series fully complies with leading safety and engineering standards — including UL 508, ASCE 25-97, ASME A17.1, and CA3137.
It meets the strict requirements for industrial control panels, elevator seismic shutdowns, and critical facility protection, making it a trusted solution for safety-critical applications worldwide.

Smart Integration and Flexibility

Each SATURN Seismic Switch features:

  • Three Form-C relay outputs with dry, isolated contacts
  • User-selectable trigger levels to match local seismic codes
  • Configurable reset modes — manual latch or automatic timed trip (1–60 seconds)
  • Internal terminal block for simple wiring and installation

Whether you’re integrating it into a new automation system or retrofitting an existing network, SATURN ensures seamless performance and peace of mind.

Data That Drives Decisions

Beyond triggering safety mechanisms, SATURN records XYZ peak ground acceleration (PGA) data in g-force, giving engineers and operators valuable insight into event intensity and system performance.

🪐 Models and Options

Available Models

SATURN S-001
• Horizontal mount, NEMA 4 enclosure
• Integrated rechargeable battery and universal 110/220 VAC power adapter
• UL-certified for industrial and commercial installations
• Ideal for standalone operation or integration with facility safety systems

SATURN-EB
• Horizontal mount, NEMA 4 enclosure
• 24 VDC (10 W) external power input (no internal battery or adapter)
• Optimized for control panels and OEM integrations requiring DC supply

Optional Accessories & Upgrades

Vertical Wall-Mount Kit
• Converts the SATURN base configuration for vertical installation
• Includes mounting hardware and pre-drilled alignment template

Stainless-Steel Primary Enclosure (NEMA 4X)
• Enhanced corrosion resistance for harsh or outdoor environments
• Precision-machined housing with reinforced seals

Bypass Switch Assembly
• Enables temporary bypass of seismic trigger for maintenance or testing
• Front-panel mounted toggle with safety lockout feature

Stainless-Steel Secondary Enclosure (NEMA 4X)
• Factory-machined housing with baseplate cutout and ventilation ports
• Available in two enclosure sizes:
– 16 in × 16 in × 8 in
– 24 in × 24 in × 12 in
• Ideal for added environmental protection or multi-unit installations

Why Choose SATURN Series from QuakeLogic?

✅ Proven reliability under extreme conditions
✅ Fast, accurate, and maintenance-free operation
✅ Seamless industrial integration
✅ Built for NEC and UL compliance
✅ Designed and supported in the USA

Final Thoughts

The SATURN Series Smart Seismic Switch isn’t just an instrument — it’s an intelligent safeguard that keeps your people, systems, and operations protected during seismic events.

NEED ONE? CLICK HERE TO PURCHASE

When every millisecond matters, SATURN delivers confidence through precision.