Manual

TVT 1 (5/02) 23

Rev. 2.6 (.pdf)

Pressing the ↵ button will return you back to the normal automatic mode of the

instrument.

You have now completed the customer selectable parameters section of the instrument.

You can enter this menu at any time to re-set, or change, any of the parameters.

9.0 Troubleshooting/System Alarm Relay

9.1 System Warning Message(s)

The instrument routinely performs self-diagnostics and will automatically generate

warning messages to provide you with specific diagnostic information about the

instrument. These are only messages and they do not indicate failure of any component

in the instrument. Normally, the cause of a warning message is external of the

instrument. The following table lists the warning messages and their associated

meanings:

WARNING ASSOCIATED MEANING TYPICAL CAUSE

W01 Lamp failure Lamp has too low an output or the 0.02

NTU calibration standard was

contaminated.

Attempt to recalibrate. If this does not

remedy the problem, the lamp must be

replaced followed by a recalibration.

W02 Calibration failure The wrong standards were used in

calibration or there is an internal sensor

failure of the instrument.

W03

Analog loop failure Analog loop connection is open. Verify

your wiring if you are using the analog

output. If not, turn off the option in the

setup menu.

W04

Flow Error If the flow switch is option installed,

this indicates a loss of flow of

rocess