Weightless Tank Scale Calibration White Paper - Calibration Methods ¦ METTLER TOLEDO
White Paper

White Paper: Weightless Tank Scale Calibration

White Paper

Discover calibration methods that don't require actual test weights

Weightless Tank Scale Calibration White Paper
Weightless Tank Scale Calibration White Paper

CalFree™ is a combination of equipment functionality, calibration methods and factory quality assurance that enables calibration without test weights.  This white paper covers the important topics to consider when choosing the right calibration method for your tank scale.

Topics covered are:

  • Initial Calibration
  • Select Calibration Method
  • CalFree™ - Influences on Tank Calibration
  • CalFree™ vs. CalFree™ Plus
  • CalFree™ Plus vs. Smart Calibration
Download the Weightless Tank Scale Calibration White Paper and learn about accurate and efficient calibration methods for your tank.

Manufacturing equipment such as tank scales are typically built from individual components.  Each component is usually pre-calibrated at the factory, but the combination of components (terminal, junction box, load cells, and cables) still requires calibration in order to operate optimally.  CalFree is based on factory calibration data of the weighing sensors.  CalFree™ Plus for POWERCELL load cells allows the weighing system to function and measure as soon as it is installed and connected. This allows for easy installation, fast start up and increases the overall efficiency and uptime of the plant. Manufacturing plants have a tight production schedule, where every minute counts.  Weighing sensors require an initial calibration for proper operation. Those activities have two challenges:

 

Time & Effort

  • Calibration of large tank weighing systems is time consuming and requires downtime which prevents your process from running.

Risk of errors

  • Manually typing in factory calibration data of the weighing sensors has an inherent risk of error (typos) with costly consequences.

 

How can I simplify my tank scale calibration?

New, specially-designed or existing scales can be upgraded and easily connected to components for automation to make sure that you receive the exact amount of raw material required.

What is weightless calibration?

Weightless calibration is a theoretical calibration done without actual test weights.  Read the Weightless Tank Scale Calibration White Paper to learn more.

How can I improve my tank calibration process?

You can improve your tank scale calibration process by learning about the different methods that are available in the Weightless Tank Scale Calibration White Paper.  All the different options for calibrating your tank scale are explained.

What is CalFree?

CalFree™ is a combination of equipment functionality, calibration methods and factory quality assurance that enables calibration without test weights.  CalFree is based on factory calibration data of the weighing sensors.

What are the influences on tank calibration that can be determined?

The influences on tank calibration that can be determined are load-cell sensitivity and local gravity variations.

What are the influences on tank calibration that are random?

The random influences on tank calibration are how load cells and weigh modules were installed on the tank, how rigid pipes are on the tank.

What is the most accurate measuring technology for critical process tanks and reactors?

Weighing is the most accurate measuring technology for critical process tanks and reactors.

When can a theoretical calibration method be used for tanks?

Theoretical calibration methods can be used when low traceability is required, like for bulk storage tanks and level control.

What is the Smart Calibration Method?

Some load cell manufacturers store calibration data in analog load cells calling this method Smart Calibration.  Despite the claims, those methods are low accuracy as they cannot accommodate mechanical effects such as piping.  Furthermore cables, junction boxes, safety barriers and load cell tolerances impact the calibration randomly similar to any other analog load cell system. Thus using the wrong components and unskilled installers can result in significant calibration errors.

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