Returning The Uw-7 For Recalibration; Using Battery Power Module - Bowles UW-7 User Manual

Ultrasound wattmeter
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Bowles Corporation

Returning the UW-7 for Recalibration

The UW-7 should be recalibrated annually by Bowles Corporation. Annual
calibration is not the same thing as a calibration weight check, which can only verify
that the unit is or is not performing within its acceptable range at any given moment in
time. It cannot determine how close to the edge of its range the unit may be. This
means that the next time the unit is used, it may no longer be within the acceptable
range.
No facility should issue an annual calibration sticker for the UW-7 based on
having performed only a calibration weight check even if they are using certified
weights.
When Bowles performs an annual calibration on a UW-7, we start with a weight
check, using annually certified weights with ten times the accuracy of the check
weight provided with the unit. We then run an acoustic verification on the unit. If the
unit readings are acoustically out of range, we access and re-set the internal parameter
readings to their optimal setting. This essentially restores the scale to its best possible
readings, and provides the confidence that, barring misuse or accidental damage, the
unit will remain well within that range for another year.
For annual calibration, call Bowles Customer Service at 802-425-3447 to obtain a
Return Authorization Number and form and shipping instructions.
Pack the UW-7 according to the Repackaging and Shipping procedures outlined in this
chapter. Failure to do so may void the warranty. Approved shipping boxes are
available from Bowles if needed.

Using Battery Power Module

To use the Li Ion power module, plug the cord in to the power receptacle at the rear of
the unit.
To power up the module press the power button to turn the battery on. This module
will last about 35 hours before needing recharge.
Transformer Unit Power Jack
UW 7
38

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