Teledyne 7500ZA operating instructions Other Parameter, Password Set, O2 ref. Value and Limit

NDIR Gas Analyzer Settings and Calibration

6.7.5 Other Parameter

The Other Parameter screen hosts 5 user settable functions:

•Password Setting

•O2 Reference Value

•O2 Reference Value Limit

•Station Number

•Instrument Range Setting To change any of these items:

•Press the UP or DOWN key to move the cursor to the item whose setting is to be changed.

•The values for password,

oxygen correction, limit, and station No. are highlighted.

•Press the UP or DOWN key to change the value. Use the SIDE key to move to the next digit to the right. Press the ENT to save the new value.

Password Set

The Password Set screen is used to change the password that is required move from the parameter setting screen to the maintenance mode. An arbitrary 4-digit number can be set to replace the default password for this purpose.

Note: Record the password and store in a safe place. Otherwise you cannot enter the maintenance mode.

O2 ref. Value and Limit

This function sets the oxygen concentration reference value used in the oxygen correction calculation*. It is settable in the range from 00 to 19%. The O2 Limit can also be set from this screen. This sets the oxygen concentration limit at the time of oxygen correction calculation. It is settable in the range from 01 to 20%.

*Refer to the O2 correction concentration value in “5.3 Outline of display screen” for oxygen correction calculation procedure.

Teledyne Analytical Instruments 71