HADI High Accuracy Load Cell Indicator

The HADI direct reading measurement system is capable of meeting the portability, sensitivity, and stability demands for both lab and field use for strain gauge based load cell instrumentation. It is a cost effective, true 6-wire sensing solution.

The Morehouse High Accuracy Digital Indicator (HADI) provides a best of breed product for force and torque measurement processes. This 6-wire sensing analog-to-digital USB converter offers the use of our Morehouse direct reading software, with multiple load cell configurations, longer cables, and lower uncertainty.

It provides non-linearity less than 0.002 % of full scale, +/- 20-bit system, with 172 A/D conversions per second. Coefficients from fitted curves are used to convert mV/V to engineering units (lbf, kgf, and Newtons).

Features include:

  • A true 6-wire sensing USB device
  • ASTM Class A lower limits better than 2 % when paired with a Morehouse Ultra-Precision Load Cell
  • System is fully USB powered, eliminating excess power cables
  • Direct reading according to ASTM E74, ASTM E2428, and ISO 376
  • For calibration of load cells, testing machines, and other force or torque systems

The HADI requires a computer for power and to display load or torque values. The HADI system with software complies with ASTM E74, E2428, and ISO 376. Accreditation bodies require compliance with these standards. The HADI system with Morehouse software eliminates the need to use load tables, excel reports, and other interpolation methods to ensure compliance with these standards.

NCSLI RP-12 states in section 12.3 “The uncertainty in the value or bias, always increases with time since calibration”. When the drift occurs, the indicator needs to be reprogrammed. Most quality systems require an "As Received" calibration. Therefore, the indicator needs to be reprogrammed, and an "As Returned" calibration is performed.

The actual level of work results in calibration costs that are much higher than they need to be. Morehouse has developed the HADI systems with software that avoids the excess costs because the coefficients used in the software are based on mV/V values and the "As Received" and "As Returned" calibrations are the same. The end user only needs to update the coefficients in the software. The software allows for conversion from mV/V to lbf, kgf, kN, N and reduces the overall cost for the customer while meeting the quality requirements in ISO/IEC 17025:2017.

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