Transtech PQI 301, Руководство оператора

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1.0 Introduction
1.1 Asphalt Pavement Quality Indicator™ Features
TransTech’s third generation Pavement Quality Indicator™ (PQI) utilizes state
of the art technology to get accurate asphalt pavement density readings. It’s
primary features are:
• No special license or radioactive materials required.
• Light weight and easy to use.
• 12 hours of portable operation.
• Measures density in common units (Lb/CuFt and Kg/M3
• Measures and compensates for asphalt temperature and surface
moisture.
• Stores 99 readings on internal Data Logger.
• Optional Download to computer.
How Does it Work?
The density of asphalt pavement is directly proportional to the measured
dielectric constant of the material. TransTech’s Pavement Quality Indicator™
uses electrical waves to measure dielectric constant using an innovative, toroidal
electrical sensing field established by the sensing plate. The electronics in the
PQI convert the field signals into material density readings and displays the
results. Once calibrated direct density readings can be consistently obtained.
1.2 Purpose of this Handbook
This handbook is intended to be both a training manual and a reference source
for the operation, care and maintenance of the TransTech Pavement Quality
Indicator. You must read through the entire manual completely to familiarize
yourself with the unit’s features, controls and operating modes before starting to
take readings and analyze data.
1.3 Application Summary
The PQI is intended primarily for use on newly-laid asphalt pavements with lift
thickness ranging from 1 inch to 6 inches. Once calibrated the PQI will provide
reliable and consistent density measurements.
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