In manufacturing and industrial automation, force measurement accuracy plays a critical role in ensuring quality, safety, and process efficiency. Load cells — used in press machines, material testers, and robotic systems — provide essential data, but only if they are properly calibrated.
Without regular calibration, even the most advanced load cells can produce inaccurate readings. This can lead to over- or under-applied force, product defects, or equipment damage. For companies focused on Total Quality Control, proper load cell calibration in Singapore is not just a best practice — it’s a necessity.
Why Is Load Cell Calibration Important?
Calibration is the process of adjusting a load cell’s electrical output so that it corresponds precisely to known reference forces. Over time, factors like mechanical wear, temperature changes, or overload incidents can affect the sensor’s accuracy.
Regular calibration helps to:
- Maintain measurement accuracy and repeatability
- Detect sensor drift, non-linearity, or degradation
- Ensure compliance with ISO standards and industry-specific QA protocols
- Prevent costly defects or rework caused by incorrect force readings
When Should You Calibrate a Load Cell?
Not all calibration schedules are the same — it depends on usage frequency, application criticality, and operating conditions. However, here are general guidelines:
- During installation or integration into a new system
- After an overload, mechanical impact, or suspected sensor damage
- On a regular basis (typically every 12 months) as part of preventive maintenance
- Before and after critical tests or production runs where precision is vital
- When force readings become inconsistent or deviate from expected norms
What Equipment Do You Need for Calibration?
To perform proper load cell calibration, you’ll need:
- Reference weights or a calibration press with a known force output
- A signal amplifier or indicator to read the load cell output
- A controller or data acquisition system (optional but recommended for automated setups)
- Calibration records or certificates for comparison and documentation
Step-by-Step Guide to Load Cell Calibration
Step 1: Prepare the Load Cell
- Ensure the load cell is properly mounted and free from any misalignment or external stress
- Allow the system to warm up for 10–15 minutes to stabilise temperature
- Set the system to zero using the amplifier, controller, or software interface
Step 2: Apply Known Reference Loads
- Apply forces in increments (e.g. 10%, 25%, 50%, 75%, 100% of full load capacity)
- Record the electrical output at each force level (in mV/V or engineering units)
- Use a calibration press for controlled and consistent force application when physical weights are impractical
Step 3: Compare and Analyse Readings
- Plot the measured outputs to assess linearity and repeatability
- Check for hysteresis — differences in output during increasing vs. decreasing force
- Evaluate whether the readings fall within acceptable tolerance bands
Step 4: Adjust Calibration Settings
- Use the amplifier or controller to fine-tune the gain, slope, or offset
- Apply a linear calibration factor to compensate for drift or minor deviations
- Save the calibration data to the system for ongoing accuracy
Step 5: Validate and Document
- Repeat the load/unload cycle to confirm the updated calibration
- Record the calibration values, technician name, date, and environmental conditions
- Store calibration logs for audit trails, quality reviews, and internal standards
Best Practices for Accurate Load Cell Calibration
- Calibrate the sensor in the same orientation as it will be used in production
- Use traceable reference standards or weights certified to international norms
- Ensure a stable environment — minimise vibration, temperature swings, and airflow
- Avoid side loading or misalignment during the calibration process
- Use a clean, regulated power supply and maintain consistent signal conditioning
Applied Modular Automation: Load Cell Calibration and Support in Singapore
At Applied Modular Automation, we provide full support for load cell calibration and integration, helping businesses maintain precise and reliable force measurement across operations.
Our offerings include:
- High-precision load cells for automation lines, test benches, and press machines
- Controllers and amplifiers with built-in calibration and diagnostic features
- On-site calibration support for factory-installed load cells
- Custom system integration for real-time force feedback and data logging
- Assistance with ISO-compliant calibration documentation and traceability
Whether you need help with a new setup or want to improve the reliability of your existing system, we’re your trusted partner for Load Cell Calibration in Singapore.
Need support with load cell calibration or force monitoring setup? Contact Applied Modular Automation for expert advice, tailored solutions, and precision you can measure.