OHAUS T51 Calibration Manual

Calibration Guide
T51 Indicators have three calibration processes: Zero, Span, and Linearity Calibration.
Follow the prompts for calibration mass values.
Ensure that the scale is level and stable during the entire calibration process.
Allow Indicator to warm up for five minutes after stabilizing to room temperature.
If the Calibration Menu is locked, the scale may be set in Legal For Trade mode.
To abort calibration, press the Exit button anytime during the calibration process.

Zero Calibration

Zero calibration uses one calibration point. This point is established with no weight on the scale.
Use this calibration method to adjust for a different pre-load without affecting the Span or
Linearity Calibration.
Press and hold Menu until C.A.L. appears, then press Yes.
(LFt.NO appears briefly before C.A.L., if the Indicator is not in LFT mode.)
ZErO appears. Press Yes to initiate Zero Calibration.
The display flashes 0 and the calibration unit. Press Yes to establish the
zero point.
The display shows --C-- while the zero point is established.
When zero calibration is completed, the display shows dONE.
Then the scale exits to the active weighing mode and displays the actual
weight value.

Span Calibration

Span Calibration uses two points to adjust the Indicator. The first point is the zero value, where
there is no weight on the scale. The second point is the Span value, where a calibration mass
is placed on the scale.
Press and hold Menu until MENU appears. Press Yes.
(LFt.NO appears, then C.A.L., if the Indicator is not in LFT mode.)
Press Yes. SPAN appears. Press Yes to initiate Span Calibration.
The display flashes the span calibration point. Place the specified weight
on the scale and press Yes.
(Press No to increment the selections, or Back to decrement the selections.
When desired value appears, place specified weight on scale; press Yes.)
The display shows --C-- while the span point is established.
When the span point is established, the display flashes 0.
Remove the weight from the scale; press Yes to establish the zero point.
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T51 Indicators
i T51 Indicators Calibration Guide