Units – American Magnetics 286 Multi-Sensor Liquid Level Instrument (CE-Marked) User Manual

Page 52

Operation

Sensor input assignment

For a selected channel, in order to access the various menus for setting the
alarms, setpoints, fill mode, etc. press a key while the default display is
visible. Pressing a key while the default display is visible activates the
associated menu display. For example, pressing the

key while the

default display is visible enters the HI menu. Press the

ESC

key to exit a

menu and return to the default display.

For more information regarding the default display modes, entering
menus, exiting menus, entering numerical values, and selecting menu
options, refer to the Menu Reference section beginning on page 43.

Note

If the displayed level reading is below the LO alarm level, exceeds
the HI alarm level, or the usage rate exceeds the RATE alarm, an
audible alarm will sound continuously. To silence the alarms, see
the alarm muting menu description on page 54.

4.1.2

Assign Sensor Inputs to the Channels

Use the

ASN

key to enter the assign menu. The assign menu provides for

the assignment of a sensor input to a selected channel. When a sensor
input is assigned to a channel, the active calibration for that sensor input
is then immediately applied to the level measurements for that channel. It
is possible to assign a null input to a channel. See paragraph 4.3.10 on
page 53 for more details regarding the assign menu.

Note

If a sensor(s) was purchased with the Model 286, AMI will typically
perform a calibration and make the appropriate sensor input-to-
channel assignments at the factory.

4.1.3

Select the Appropriate Units

Repeatedly press the

UNITS

key to cycle between display units of percent,

inches, or centimeters. The level reading displays the length, or
percentage of the active sensor length, above the MIN calibration point
(ignoring any zero offset setting) that is immersed in liquid.

The selected units may be changed at any time except during the process
of entering a numerical value.

4.1.4

Configure the HI and LO Alarms

To adjust the HI and LO alarm levels for the selected channel, use the HI
and LO menus accessible by using the

and

keys, respectively. The

setpoints may be located anywhere between 0% to 100% of the measured
span, with the limitation that the HI alarm must be greater than the LO
alarm. The HI and LO alarm adjustments are compatible with all three
units modes.