PQI 301 Two Point Calibration Worksheet
FACTORY USE ONLY!!!!!
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Enter MTD in PQI and record here
1.
Display the Setup Menu either by
* Pressing ‘1’ for “Setup Menu” at the
Startup Menu or
* Pressing the ‘Menu” key while in any
Run Mode
2. Press ‘2’ for “Mix Information”
3. Press ‘1’ for “Set MTD”. The current MTD is displayed on the menu.
4. Press ‘2’ to “Enter a New Value”
5. Enter the new value (followed by the ‘Ent’ key) at the prompt
6. Press ‘Ent’ twice to go to an Operating Mode
Use the PQI’s Average Mode to obtain a low-density measurement from
directly behind the paver. If you are unable to obtain a reading due to
repeated “Density Mismatch” errors, switch the PQI to Continuous Mode (by
pressing the ‘Mode’ key) and retake the reading. Record the reading here
Use the PQI’s Average Mode to obtain a high-density measurement from a
finished area of the mat. Record the reading here
To compute slope, the PQI requires an estimate of the actual percent
compaction behind the paver. This density is typically 82% of MTD but may
vary with mix and with paver type. In the following table, enter your estimate
of percentage of MTD you would expect behind the paver.
(Enter in percent, e.g. 82% should be recorded as 82, not 0.82)
To compute slope, the PQI also requires an estimate of the actual percent
compaction of the finished mat where the finished reading above was
taken. This density is typically 95% of MTD but may vary with mix. In the
following table, enter your estimate of percentage of MTD you would expect
in the finished mat.
(Enter in percent, e.g. 95% should be recorded as 95, not 0.95)
Use the PQI Slope Calibration Function
1. From any PQI Run Mode, press ‘CAL’
2. Press ‘2’ for “Special” Press “ENT”
3. Press ‘3’ for “Two PointMethod”
4. Enter “Lo Reading”, “Hi Reading”, “Lo Estimate” and “Hi Estimate”
values from above when prompted
5. Record “New Slope” here
6. Press ‘1’ to “Use this value”
7. Press ‘Ent’ twice to return to Run Mode
MTD
Low
Reading
High
Reading
Low
Estimate
High
Estimate
New
Slope
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Summary of Contents for PQI 301
Page 1: ...Pavement Quality Indicator Model 301 Operators Handbook ...
Page 36: ... ...
