SSI Single Gas Analyzer for H2, Руководство по эксплуатации

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Single Gas Analyzer (SGA)
Operations Manual
Super Systems Inc. Page 27 of 44 Page 27 of 51
Output Calibration
The Output Calibration screen allows the user to perform a zero/span calibration. The SGA is
equipped with two analog outputs. These outputs require calibration to ensure that the mA
signal corresponds to a given output value (zero value for the lowest value and span value for
the highest value). SSi recommends output calibration be performed on each output at least
once per year, or as needed.
To calibrate each output, first make sure that you have a multimeter (or other appropriate
testing instrument) available. Connect the gas to the “Cal Gas Inlet” on the side of the SGA
enclosure and open the valve. It is recommended to let everything (gas and SGA) sit for
approximately thirty minutes to allow the temperature to achieve equilibrium.
(Never perform a span calibration without first performing a zero calibration.)
1.
Select the output value that you wish to calibrate (Zero Output 1 or Zero Output 2).
2. Press “Prep for Cal” to enter calibration mode.
3. Ensure that the output signal is being sent for the span or zero value (whichever you are
calibrating for).
4. With a multimeter, measure the mA value at the output. Enter that value in the “Entered
Measured value” field and press “Calibrate”.
5. Repeat the process above for the appropriate Span Output.
Figure 3 - Output Calibration Page