PGA 3510 Operations Manual
Super Systems Inc.
Page 19 of 42
After the gas values have been entered, proceed with the calibration in the same manner as with the zero
calibration. Never perform a span calibration without first doing a zero calibration.
Calibrating the Oxygen Sensor
The PGA 3510 uses an electrochemical oxygen sensor that should last approximately two years
(depending on usage). It measures oxygen to a resolution of 0.1%, so it is not suitable for calculating
carbon in a furnace. Its intended use is for troubleshooting problems such as air and/or water leaks. The
information from this sensor is not used in the calculation of percent carbon.
Calibration of the Oxygen sensor does not require a special calibration gas. Ambient air contains 20.9%
O2, and since that concentration is relatively stable, it can be used to perform a span calibration on the
sensor. There is no drift at the low range of the sensor so there is no Zero Calibration function for the
Oxygen sensor. There is only a Span Calibration.
To perform a Span calibration: Take the instrument to an office or outdoors where it will be in fresh air.
Press the Calibrate O2 button on the Sensor Calibration screen. When the Oxygen Calibration screen is
entered, the pump automatically turns on. When the Actual value stabilizes, press the Start Calibration
button. This will make the Actual value match the Target value.
Automatic Sampling Parameters
This instrument is capable of communicating directly with a control instrument. This is valuable because
it will provide real-time entry of the temperature and millivolt information from the probe, allowing for an
accurate comparison between the IR % Carbon and the Probe %Carbon. To establish this
communications link, see “Communications and Source Setup – Atmosphere/ Temp Sources.”
The Automatic Sampling Parameters screen will allow the user to adjust the way that the PGA 3510
updates the COF / PF in the atmosphere controller. All of the parameters on this page can be
disregarded if the “COF/PF Adjustment Mode” is set to Monitor mode. These parameters only apply when
the instrument is in Control mode.