Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
Page 30 of 38
Page 30 of 51
Input Configuration
The use of the Lambda analog O
2
probe requires that its input be configured and calibrated
accordingly for measurement. The input labeled, “TC” is not applicable for this product and is
not used. The O2 input (when used) must be calibrated at the low and high ends of input voltage
range to ensure accurate readings. SSi suggests that this device should be calibrated on a
routine basis, such as once a year or as prescribed by the user’s quality system requirements.
To perform a calibration, a certified calibrator(s) with the ability to source and read millivolts is
required. The appropriate connection leads are also required. The default calibration is
performed using a zero and span routine for the pre-defined input sensory type (i.e. voltage).
Zero & Span Calibration:
1.
Select the correct input type for Input 1 from the drop-down menu. Press the Set Type
button to the right in order to set that type of input.
2.
Go down to the Calibration Type option and choose the Zero VDC.
3.
Select Input 1 for the Inputs option.
4.
If the input is a thermocouple, select the correct TC Type. If the input is not a
thermocouple, the value in this field does not matter.
5.
Select the appropriate Range for the input type selected. For thermocouple inputs, see
the table above for the corresponding range.
6.
Connect the calibrator and source a zero input signal (0 mV or 0 VDC).
7.
Allow the Raw VDC 1 signal to stabilize.
8.
Enter the same zero value as what is being sourced from the calibrator into the Enter
Target field and press the Calibrate button. A timer will count down from 30 seconds.
9.
Once the Calibration Timer has counted down, the zero calibration is complete. You
should see the Raw VDC 1 value change to match the calibrator.
NOTE:
The remaining steps for the span input calibration will be very similar to the steps
performed for the zero input calibration.
10.
The Input type selected in step 1 remains the same. Change the Calibration Type to
Span VDC.
11.
The TC Type and Range selected in steps 4 and 5 remain the same.
12.
Using the calibrator, source a span input signal. The span signal should be at least 90%
of the full range of the sensor (for example, source at least 1.125 VDC for a sensor with a
range of 0 to 1.25 VDC).
13.
Allow the Raw VDC 1 signal to stabilize.
14.
Enter the same span value as what is being sourced from the calibrator into the Enter
Target field and press the Calibrate button. A timer will count down from 30 seconds.
15.
Once the Calibration Timer has counted down, the span calibration is complete. You
should see the Raw VDC 1 value change to match the calibrator.
Input 2 is not applicable for this product and can be disregarded.
TC Trim
The TC Trim Calibration Type is not applicable for this product.