Table Des Matières - REED R7900 Manuel D'utilisation

Table of Contents
Features ......................................................................................... 3
Specifications .............................................................................4-5
Instrument Description .................................................................. 6
Operating Instructions ..............................................................7-10
Adjusting the Sound Velocity ....................................................... 7
Setting Probe Frequency ............................................................ 7
Preparing the Measurement Surface ........................................... 7
Taking Thickness Measurements ................................................. 8
Zero Calibration .......................................................................... 8
Sound Velocity Measurements .................................................... 9
Setting Alarm Thickness Limits .................................................... 9
Minimum Capture Measurements ............................................. 10
Two Point Calibration ................................................................ 10
Measurement Methods ..........................................................11-13
Measurements on Cylindrical Surfaces ...................................... 11
Measuring Compound Profiles .................................................. 12
Measuring an Un-Parallel Surface ............................................. 12
Influence of Material's Temperature ........................................... 12
Material with Large Attenuation ................................................. 12
Measuring Castings .................................................................. 13
Preventing Errors ....................................................................14-16
Reference Test Pieces ............................................................... 14
Ultra-thin Material ...................................................................... 15
Rust, Corrosion, and Pits .......................................................... 15
Error in Identifying Material ........................................................ 15
Degradation of Probe ................................................................ 15
Overlapped Material and Compound Material ........................... 15
Influence of Metal Surface Oxidation ......................................... 16
534 Blue
Abnormal Readout of Thickness ................................................ 16
123 Yellow
Utilization and Selection of a Coupling Agent............................. 16
485 Red
123 Yellow
534 Blue
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