INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 63)

ISP-074-576-P1D 57
WARNING
The 2020ppbPRO is a total VOC instrument and will ALWAYS respond
to all ionizable compounds present in a sample. The 2020ppbPRO will
NEVER respond only to a specific compound if an RF is programmed.
It is the responsibility of the user to be aware of the limitations of PID
instruments.
Response Factors and Memory Slots
Figure 16. Response Factor and Memory Slots
Response factors built into the 2020ppbPRO are used to correct for the response of
the PID to a specific compound. These correction factors are often called response
factors (RF). The 2020ppbPRO has 15 memory slots. Each memory slot can store
one preset RF. Library/RF selections simplify Memory Slot programming and
provide standard response factors for approximately 100 compounds. CHOOSE
FROM PRESETS allows you to select an entry from a pre-programmed Library. The
name, response factor and three alarm levels are all set from the library.
To select a preset to program the selected Memory Slot:
1. Press MENU, choose “Memory Slots”, and then use the DOWN ARROW
soft key to highlight “Memory Slots”, then press the SELECT soft key.
To select a memory slot:
Press the DOWN ARROW key until the memory slot you wish to use is
highlighted. Press the SELECT key.
The memory slot compound, RF, TWA, STEL, and Peak alarm value
are displayed. Press the DONE key to return to the main menu.
To edit a memory slot:
1. Press MENU, then the DOWN ARROW key to highlight “Memory Slot”, then
press SELECT.
2. Press the SELECT key to view the “Memory Slot” content and then press
the DONE key to return to the Main Menu.
3. Press the EDIT key to change the value for the Response Factor (RF) or the
PEAK, STEL and TWA alarms.
4. Press the EDIT soft key, highlight Name, RF, STEL, TWA, or PEAK using
the DOWN ARROW key, then press the SELECT soft key.