EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page 77
SECTION 6
MAINTENANCE
This section describes the maintenance that may be required for the EPD.
Maintenance is limited to general cleaning, removing/replacing the EPD battery and
removing/replacing the EPD clip assembly. Limited maintenance can also be
carried to clear fault conditions and check the functionality of the EPD.
6.1 Calibration
The EPD is calibrated by a highly sophisticated automatic system consisting of
several radioactive sources. Calibration is performed during manufacture and is
expected to remain unchanged throughout the life of the EPD - provided the EPD
remains undamaged.
Thermo Electron’s normal policy is to supply EPDs with the calibration factors locked
to prevent their subsequent modification, other than by Thermo Electron. However
where expressly requested by customers in their purchase order, EPDs may be
supplied with the calibration factors in the unlocked sate. This is to enable such
customers to modify the calibration of these EPDs. In such cases the customers
attention is drawn to the following Disclaimer:
DISCLAIMER
The EPDs within this shipment have been calibrated using the factors as defined on
the supplied Calibration Certificate. As the calibration is NOT LOCKED Thermo
Electron has no control over any subsequent adjustments made by the end user to
these factors. Thermo Electron can therefore not warrant the calibration of these
EPDs once they have left the factory. As such, Thermo Electron accepts no liability
for the accuracy of the radiological response of these EPDs.
EPD calibration may be checked using a Thermo Electron irradiator, or by exposure
to a known radiation field, in a manner approved by the appropriate regulating
authority or local rules. It is recommended that calibration is checked annually.
To Next Page
Loading...
Need help?
General
