K-Patents PR-21-S - Manual (Page 121)

12 Sensor verification 115
12 Sensor verification
A company maintaining quality system according to ISO 9000 quality standards
must have defined procedures for controlling and calibrating its measuring equip-
ment. Such procedures are needed to demonstrate the conformance of the final
product to specified requirements. The company should
− Identify the required accuracy and select appropriate equipment for measure-
ments.
− Establish calibration procedures including a check method and acceptance cri-
teria.
− calibrate the equipment at prescribed intervals against certified equipment
having a known valid relationship to nationally recognized standards. In cases
where no such standards exist, the basis used for calibration must be docu-
mented.
K-Patents verifies the calibration of all delivered instruments according to a pro-
cedure similar to the one described Section 12.1. K-Patents quality system is
ISO 9001 certified by Det Norske Veritas.
12.1 Refractive index n
D
verification
Before starting the verifications procedures, make sure that you have a K-Patents
PR-21-S sample holder at hand. Also check the condition of your standard refrac-
tive index liquids. You’ll also need a cleaning solution (ethanol) to clean the sensor
prism and the sample holder.
Sample holder (Figure 12.1) is kept in place by a rubber link.
Figure 12.1 Sample holder - Part number PR-5002