AMI 1700 - Performing Loss of Sensor Calibration; Figure 4-15 PERFORM MAX CAL. Selection Button; Figure 4-16 Home Selection Button; Figure 4-17 MENU Selection Button

46 Rev. 2
Calibration
Capacitance-Based Level Calibration : Pre-Calibration Procedure
9. Touch in the NITROGEN
SENSOR NAME: field. The
keyboard will be displayed.
Edit the displayed name and
press ENTER at the bottom of
the screen.
10. Press the home icon button in
the screen footer to return to
the level display screen.
4.2.5.2 Performing Loss of Sensor
Calibration
The Model 1700 will detect
when the liquid level sensor
has been disconnected from
the instrument and display a
notification on the front panel. If the instrument has been
configured for autofill, the fill valve will be shut, requiring operator
intervention to resume autofill operation. This loss of sensor
threshold must be calibrated as follows:
1. For a system where the internal oscillator is used, connect the
coaxial cable to the BNC connector on the instrument rear panel
but leave the cable disconnected from the sensor BNC connector.
For a system where an external oscillator is used, connect the
coaxial cable between the instrument and the oscillator/transmitter
unit. Connect the second (6’) coaxial cable to the input of the
oscillator/transmitter unit but leave the cable disconnected from
the sensor BNC connector.
2. Press the MENU button in the
lower left corner of the display
screen.
Figure 4-15. PERFORM MAX CAL.
Selection Button
Figure 4-16. Home Selection Button
Figure 4-17. MENU Selection Button