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dwb78
hi how can one tell if analyzer needs re calibrated? iv a kane 425 and seems to be giving a ratio of 0.000. when it feels like it sometimes a ratio will show but then disappear , with a 30 ppm co surely it should be giving me a ratio, this has only started happening and on my last service the c02 was looking like this _^_ as i can remember. any ideas or is this common with needing recalibrated
thanks
thanks