Delta PG-40 Specifications download pdf (Page 46)

46 LTL-X Retrometer DELTA

 Reference calibration

Now the instrument is ready for the next step and the display will tell you to rotate

the calibration unit so that the white face is facing the instrument tower. Again it is

important that the pins on the side of the unit fit into the slots in the LTL-X. Press OK

to begin the reference calibration. Check the value displayed and if necessary adjust

the calibration value shown in the display, so it matches the value stamped on the

calibration unit.

Press the OK button to perform the calibration.

The calibration procedure is now complete. Remove the calibration unit and store it

properly. Press OK to return to the measurement display.

The instrument automatically compensates for zero signal, leakage and other known errors,

and calculates a calibration factor. This process is fully automatic. If the calibration routine is

followed precisely the retrometer will now display 'true' Rl.

Always store the reference calibration unit in a dry and clean environment.

Figure: 7 – Placing the calibration normal.

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Delta PG-40 Specifications Page 46