Selecting An Engineering Unit For Measurement (Eun); Level Offsets (L1O And L2O); Dac Trim; Temperature Output - K-TEK AccuTrak AT100 Installation & Operation Manual

4.0 TRANSMITTER CALIBRATION AND SETUP

4.6 Selecting an Engineering Unit for Measurement (EUN)

The unit is capable of displaying level output in inches, feet, millimeters, centimeters, meters, or in percent of
range.

Selecting an Engineering Unit
-Under the CFG menu, go to the EUN menu option.
-Press SELECT, then press UP or DOWN to cycle between engineering units.
-When the LCD is displaying the intended unit, press SELECT once more to set the engineering unit (the
display should stop blinking).
Note: Due to 4 digit display limitations on the display, if 9999mm will be exceeded, the metric engineering
units must be changed to cm.

4.7 Level Offsets (L1O and L2O)

Level Offsets can be utilized to make the indicated level on the transmitter match the actual level in your
tank or vessel. This is typically used to compensate for an un-measureable area at the bottom of the vessel. The
Level Offsets can also be utilized to make the indicated level on the AT transmitter match the indicated level of
another transmitter. Positive offsets will be added to the actual level of the transmitter to indicate a higher level.
Conversely, negative offsets will indicate lower levels.

Changing the Level Offset
- Navigate to the L1O (Level 1 Offset) menu option.
- Press SELECT to change the value (in Engineering Units) of the level offset to be applied.
- For dual-float units, Level 2 can be offset via the above steps with the L2O menu option.

4.8 DAC Trim

The output of the AT100 transmitters will be set up at the factory using calibrated multi-meters. Once
installed, the current output received by the control system will be influenced by the available power and field wiring
and may not indicate an exact 4.00 and 20.00 mA. To correct this error a DAC TRIM may be performed.

Performing the DAC Trim
-Under the CAL menu, scroll down to the DAC TRIM option
-Press UP and SELECT or DOWN and SELECT to enter the DAC TRIM menu
-At D 4 or D20 enter the current reading indicated at the control system and the transmitter will correct its
output
-Repeat each entry if needed then EXIT the menu.

4.9 Temperature Output

This section applies only to transmitters with the temperature output option. These transmitters will have
module types of M5A or M5B with or without a suffix of "D" or "F".

4.9.1 Selecting the Unit of Temperature (EUN TEMP)

The unit will display temperature in either Celsius or Fahrenheit degrees.

Selecting the Unit of Temperature
-Under the CFG menu, go to the EUN TMP menu option.
-Press SELECT, then press UP or DOWN to cycle between Celsius and Fahrenheit.
-When the LCD is displaying the intended unit, press SELECT once more to set the temperature unit (the
display should stop blinking).
AT100-0200-1 Rev L (10-2010) DCN0528 10