Re-range the transmitter via a wet calibration method using the external zero adjustment screw and the range setting switch on the integral indicator. The required level range for this step is 20 to 80% (i.e. when the level in the vessel is 20% the tx output should be 4 mA, and when the level in the vessel is 80% the tx output should be 20 mA). The procedure for re-ranging using the external zero adjustment screw and the range setting switch on the integral indicator is described on pages 7-6 and 7-7.
After performing the re-range of the transmitter, repeat step 2, this time filling in table 5. Note, calculate % error based on the mA error values.