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(A) Span calibration using the ENERAC kit
The gas calibration system supplied by ENERAC is shown in Figure 2. The kit
comes with a regulator and probe adaptor. For CO, NO, NO
2, SO2 & combustibles
calibrations you must order gas cylinders containing the desired type of span gas.
Span calibration using the ENERAC calibration kit is easy.
You don’t need to worry about gas flow rates and there is no wasting of calibration
gas. Follow the instructions supplied with the calibration kit.
(B) Span calibration using your own gas
If you do not have the calibration kit, you can use your own gas to perform span
calibrations you must take certain precautions, in order to calibrate the sensors
properly.
Notice that you need a number of certified gas cylinders. Make sure that you use a
bypass flow meter as shown in order to supply an adequate flow of span gas
without developing excessive pressure on the sensors. The accessory ensures
proper gas flow to the ENERAC.
For greatest accuracy it is recommended that you use a span gas value close to the
emission concentration you expect to measure.
Set up your calibration apparatus as shown in Figure 3.
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