Thermo Scientific Micro-Tech 9101, Reference Manual

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Introduction
Overview of Capabilities
1-16 Micro-Tech 9101/9201 Reference Manual, Rev J Thermo Fisher Scientific
The total is accumulated by multiplying weight per unit length times the
incremental length and totalizing the result in engineering units. Three
totalizing memories are provided, as follows.

The first memory (Master Total) is not re-settable to guarantee the
data is not lost because of unwanted reset.

The second and third memories (Reset and Operator Total) are re-
settable by the operator and are normally used for shift or daily
totalization.
Zero and span calibrations are based on belt length defined by a number
of belt revolutions. To calculate the exact number of revolutions, the
instrument counts the pulses delivered by the speed transmitter (one
pulse represents a specific belt length).
When the required number of pulses is reached, the instrument ends the
calibration test, and compares the actual totalized value to the theoretical
one (0 for zero calibration), and calculates the calibration error.

Electronic Calibration (R-Cal)
Allows the user to perform the calibration without the need for
applying test weights or test chains on the weighbridge. It is
performed by unbalancing the load-cell bridge using a precision
resistor. The calibration constant is calculated based on the load cell
and the scale data.

Test Weight Calibration
Requires the positioning of test weights on the weighbridge.

Chain Calibration
Requires the application of calibrated chains on the belt. This
method is the nearest to actual operating conditions.

Material Test
Allows you to run material of known weight over the scale to check
the accuracy of your scale. Alternatively, you can run material over
the scale, then have it re-weighed by another reference scale.
Automatic Zero
and Span
Calibrations