NOMEX
Service Manual - Repairing Legally Calibrated Dosemeters
D909.131.00/02 en
91
Technical Inspections of the Measuring
System
The product must be inspected at regular intervals
according to the national regulations. It is recom-
mended to perform technical inspections of the
measuring system annually or every 2 years at
PTW-Freiburg or a qualified calibration laboratory.
Inspections must also be performed after repairs
or after each influence that may have changed the
behavior of the product.
Calibration
The exact calibration factor and supplementary
data are included in the calibration certificate.
The product should be recalibrated at a dose rate
typical for the application.
It is recommended to have the product calibrated
annually or every 2 years at PTW-Freiburg or by
specially trained staff on site.
18 Repairing Legally
Calibrated Dosemeters
NOTE
This section is applicable in countries where
legal requirements exist demanding calibra-
tion, for example Germany and Austria.
Interventions on the part of the user that may
alter the measured values determined by legally
calibrated dosemeters are not permitted. For this
reason, the legal calibration authority has applied
stamps to those parts of the dosemeter where
such interventions could take place. Devices with
damaged stamps are no longer considered legally
calibrated.
If a dosemeter is found to be defective, it can be
sent to an officially recognized calibration labo-
ratory for repair. After repair, the device must be
legally recalibrated. However, it can be used even
if not yet legally recalibrated.
If the repair is not performed at an officially rec-
ognized repair center, the device must be legally
recalibrated before it can be used for applications
requiring legal calibration.
