RKI Instruments 71-0191RK - Manual (Page 26)

23 • PID Sensor Tab
• Full Scale
This is the full scale value for the target gas.
• Point
The point value indicates to what decimal place the gas readings are
shown. A value of 1/1 indicates a reading to the “ones” place while
a value of 1/100 indicates a reading to the “hundredths” place.
• Unit
The unit describes what units the gas reading is provided in. All
units are in ppm. While this parameter may be changed in the csv
file, units of ppm are the only acceptable units and changing this
parameter to %LEL or %vol will change the unit box to red.
• Digit
The digit is the increment of the gas readings.
• 1st
This column is for the low alarm point of each gas in ppm units.
• 2nd
This column is for the high alarm point of each gas in ppm units.
• STEL
The STEL column displays the STEL values for each gas.
• TWA
The TWA column displays the TWA values for each gas.
• AutoCal
The AutoCal values are those that come up during the auto
calibration procedure. They are default values that may be changed
if the gas concentration in the calibration cylinder is different.
• Factor
This value is the Relative Response Factor for the PID channel. The
factor for each pre-defined gas is factory defined. The factor for the
user defined gas must be obtained from Table 4 on page 29 or
through testing as described in “Obtaining a Relative Response
Factor” on page 28. A valid character for the Factor is a value
between 0.01 and 25.00.