Levelcom 100 - Digital Display Messages

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Digital Display Messages

The LevelCom 100 is designed to detect certain system problems and render messages on

the digital display. Following is a list of messages, which could be displayed by the

LevelCom 100. If an error message occurs refer to the trouble-shooting guide.

LEAK 1: The LevelCom 100 has determined the sense line is leaking. It must be noted the

LevelCom 100 will not detect a major, catastrophic failure of the sense line. In this event the

LevelCom 100 will sense the ambient atmospheric pressure, calculate that the tank is empty

and display the down arrow symbol indicating the level in the tank is below the end of the

bubbler pipe.

CAN’T ZERO SENSOR: Error message indicating the LevelCom 100 pressure sensor has

experienced a problem during a hardware zero measurement. The hardware zero measured

is outside the allowable range and the machine may need calibration or repair. The machine

will halt operation when this condition occurs, relays will go to their system fail state, and the

System Trouble light on the front panel will be lit.

CHECK AIR: Indicates the LevelCom 100 has detected either insufficient or excessive

supply air pressure. Confirm the air source is operating at the proper pressure and is

available to the instrument (refer to the specifications page 2). Check for contamination of

the air supply, e.g., water accumulations, plugged filters, debris blockages, etc.

Flashing Numeric Display: The numeric display will flash if the LevelCom 100 has sensed

a change in level and automatic sampling is not enabled. The instrument is indicating that

the displayed data may no longer be correct. Pressing the UP or DOWN key will cause the

unit to sample and display the new reading.

OVER PRESSURE: Indicates the LevelCom 100 is measuring an abnormally high pressure

on the sense line. The LevelCom 100 will activate the System Trouble alarm indicator and

test the sense line every 30 seconds to see if the condition has cleared. This fault condition

will clear when the sense line pressure returns to the allowable range.

Up Arrow or Down Arrow: To indicate an out

of range reading the digital display will show

flashing arrow symbols in the left most

character of the digital display. When the liquid

level falls below the end of the bubbler pipe the

machine will display the Bubbler to Bottom

value with a flashing down arrow to indicate that

the fluid level can no longer be measured. If

the fluid level is above the Maximum Depth

level the left most character will have a flashing

up arrow to indicate that the fluid level is over

the top of the tank.

Volume Overfill Example

Depth Low Level Example

Figure 3 Overfill and Low Level Arrows