E-Mu SP1200 Specifications download pdf (Page 168)

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3BUS 208 000 R1301146 Measurement Setup

Verification

Background

Sensor verification is the process of determining if the measurement signals from

the sensor are being processed into correct measurement values at the Host. This

can be done in an uncomplicated manner by using standard check samples and

comparing the results of on line measurements to those known values.

If you have trouble verifying sensor performance, then you would want to use a

more vigorous methodology to examine sensor performance.

Initial verification of sensor performance can be accomplished using the Service

Workstation and the sensor Health Reports. Initial verification of the Moisture and

the Ash sensors cannot be done independent of the Host because setup specific

compensation factors must be set up at the Host. For long-term verification for

sensor performance, refer to the sensor verification procedures in your Host

documentation.

It is important to organize the sensor verification process into distinctive phases

with a different set of procedures and goals for each phase.

Phase I - Initial Static Verification

The purpose of this activity is to verify that the Scanning Platform and its associated

sensors have been properly installed and adjusted and that all calibration constants

are correctly entered. During this phase, the measurement system is also tested for

stability and repeatability, to assure that it is ready to start the on–line measurement.

Typically, this program takes one day.

Phase II - Process Measurement Verification

This phase of the program has the goal of verifying on–line measurement during

dynamic conditions to the customer laboratory standards, on some of the key grades

of paper being run in the process. This phase is usually 1-4 weeks.

Phase III - Continuing Certification

The purpose of this phase is to assure that long-–term measurement performance is

stable, and to alert about any potential problems before any degradation can happen

in measurement quality. This phase is organized to give a reliable long-–term

performance record to the system by means of simple, periodic checks, and record

keeping. By definition, this phase lasts for the life of the system.

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E-Mu SP1200 Specifications Page 168