Negative Suppress Function (Default = Enabled); Figure 14: Negative Suppress Function - Thermo Scientific Odalog L2 Series User Manual

OdaLog® L2 – Gas Logger User Manual

6.13. Negative Suppress Function (Default = Enabled)

This function is activated via the OdaStat-G™ software package, "Instrument Parameters" section, by
selecting the "Suppress Negative Reading" option. Once active, the instrument suppresses all negative
readings to the display and the logging memory.
If the instrument drifts negative by more than 2.5% of full scale or less as per factory configuration, the
instrument will display the message "do nuLL". This message indicates that the instrument needs a NULL
(Fresh Air Zero) per Section 9.5. The NULL must be performed in "clean air".

Figure 14: Negative Suppress Function

P/N: 10-1000 Revision G, January 2024 Page | 17