HP 5528A User Manual

Model 5528A
Operator I nformation
20-2
CLEANING THE OPTICS
WARNING
THE FOllOWING OPTICAL CLEANING PROCEDURES DO NOT
APPLY TO THE OPTICS IN THE LASER HEAD . CLEAN INC OF THE
LASER HEAD OPTICS REQUIRES ACCESS TO THE INTERIOR OF
THE INSTRUMENT WHERE HICH VOLTAGES CAN BE PRESENT.
THUS ALL LASER HEAD MAINTENANCE SHOULD BE PER -
FORMED BY A QUALIFIED ELECTRONICS TECHNICIAN WHO
IS AWARE OF THE HAZARDS INVOLVED .
A good rule fo r the exposed glass surfaces is NEVER LET ANYTHING TOUCH THEM. A fingerprint
will collect du st and dirt which will reduce the beam intensity by attenuating and dispersing the
beam.
Cleaning the optics should be avoided unl ess the signal intensity is noticeably reduced as
indicated by the Beam
St rength Meter .
If cleaning Is necessary, you must be careful to avoid rubbing particles into the antireflectivc l ens
coating. Permanent reduc tion of the signal intensity will r esu lt. Particles can be rinsed with a
gentle stream of
pure indu strial grade methanol from a s quirt bottle . Avoid alcohol contami-
nation with the following precautions -
1.
Use only new. previously unopened co ntainer s. Alc ohol absorbs water if left exposed to air.
This
will result in water spots when the alcohol evaporates.
2. Transfer the
al c ohol to a squeeze bottle that ca n be capped and made airtight
3. Never transfer alcohol back into the original cO nlainer.

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English