氨氮在線分析儀(納氏試劑法)phototek-6000-nh3-n-資料下載頁(yè)
2025-06-29 14:27本頁(yè)面
【正文】 strument can be normal and stable operation of the normal。Independent storage, storage data safe and reliable。Reliable data transmission and integration of multiple transmission means, with 420mA (Quad) analog output, 8 Di digital input and RS485 / 232 data interface, also support the Modbus data processing methods to access and control the machine。Wide range of measurement can be automatically switching range, widening the scope of the instrument can be used in surface water, drinking water, can also be applied to the pollution sources and other online monitoring。Detection principleAmmonia gas sensing electrode is placed alkaline electrode solution pH electrode, the ammonia molecules in the water by ammonia semi permeable membrane into the electrode, thus changing the electrode solution pH, pH electrode detection the change, the measured electromotive force and water ammonia concentration with the Nernst equation. This can be measured sample potential value, determine the content of ammonia nitrogen in water samples.Technical parametersStandard addition method for detection of ammonia sensitive electrodeDetection period 10min~30minMeasurement range of ~100, mg/L 100~1000, mg/L ~The lowest detection limit was mg/LRepeatability error 3%FSZero drift 5%FSRange drift 5%FSResponse time is less than 3minTemperature pensation precision less than MTBF = 720h/Actual water sample ratio test 10%
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