56925BA2 Rev. 03, 11/2017
2 Safety
2.1 Dangers and safety measures
• Read these instructions thoroughly and completely before working with the
product.
• Store the instructions where they are accessible for all users at all times.
2.2 Proper Use
The evaluation unit DuoXpert LB 470 (EVU) measures the level together with com-
patible detectors and an appropriate radiation source and may only be used for
this purpose.
The following constitutes proper use:
• Adhering strictly to the instructions and operation sequences and not un-
dertaking any different, unauthorised practices which could endanger your
safety and the operational reliability of the EVU!
• Observing the given safety instructions!
• Carrying out the prescribed maintenance measures or having them carried
out for you!
• Only use accessories and spare parts from BERTHOLD.