4215 Plus Indicator

Designed to cure many calibration headaches, the 4215 Plus indicator helps laboratories lower measurement uncertainty and make better measurements. The 4215 Plus indicator uses a polynomial equation to reduce non-linear load cell errors.

The 4215 Plus indicator is a standalone unit that does not require additional software, load tables, or computers to use the B coefficients and solve for Force.

It can store coefficients used to predict load cell deflection values throughout the calibrated range. The polynomial equation, fitted to calibration data using the least-squares method, is found on many ASTM E74, ISO 376, and other calibration certificates. The indicator can store 28 load cell calibrations.

Many other indicators use a span calibration, which introduces significant bias (Measurement Error) because the load cell output often fits better to a calibration curve. Sometimes the bias from a calibration span is larger than the load cell specification. The bias adds additional error and increases the measurement uncertainty.

With the 4215 plus, calibrations are performed in mV/V and converted via the polynomial equation to various force units such as gf, lbf, kgf, kN, N, and t.

Any time the unit is sent in for calibration, a new polynomial equation is calculated and entered directly into the indicator. This means additional adjustments are not needed, which reduces calibration costs.

Download our free Coefficient Calculator where you can enter calibration data to generate calibration coefficients.

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