Quick-Check-PowerSaver Manifold 6 Port South-Tek Systems
Revision: 0
Revision Date: 8/2/17
Page 15 of 30
Once access is granted to the “Main Menu”, the user can access all but the “System Settings” options shown in figure
to the right.
5.5
SENSOR SETUP/CALIBRATION
The “Sensor Settings” screen allows the user to calibrate sensors included with the Quick-Check.
Figure 6: 2-Pt Purity Calibration
Table 1: Recommended 2-Point Calibration Ranges
All sensors are setup with a 2-point linear calibration. To setup the calibration, the user will need two known points. It
is best to select two points at opposite ends of the sensor’s calibration range. The chart above is the recommended
2-Point Calibration range for the “Low Value” and “High Value”.
The “Low Raw” and “High Raw” are determined by the “Current Raw” reading at the time the known calibration
source is applied to the sensors. For example, when the known purity is 20.9% O2 to the Oxygen Sensor, read the
“Current Raw” value and enter that in the box next to the “High Raw” text. Then apply a known purity of 1.5% O2 to
the sensor and read the “Current Raw” valve (which should be different – if not, the sensor or wiring connection may
be bad) and enter that value in the box next to the “Low Raw” text once the reading becomes pretty steady (apply
the gas for at least 2 minutes).
Other notes for calibrating units with % O2 sensors:
1.
Make sure certified gas is being used for the low point.
Calibration Value Ranges
Low Value
High Value
O2 %
0.5-1.5% O2
10-21% O2
