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Q
What is the difference between the spectral COD and the national standard method?
AThe spectrum is UV method, gb method has potassium dichromate and potassium permanganate method.
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Q
How to maintain calibration cycle of sensor in different media?
AGenerally, river water lasts from three to six months, depending on the specific period of use.
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Q
Can I calibrate the sensor。
AYes.
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Q
Response time and stabilization time of the sensor.
AResponse time 1 second, stabilization time (30 sencond min -3minutes max).
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Q
How to choose parameters for different industries?
AGenerally speaking, conventional ginseng, COD, ammonia nitrogen more.
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Q
Which is better, dissolved oxygen fluorescence method or polar universal method?
AFluorescence method is optical, more stable value, simple maintenance, labor cost saving, long life; Polar universal method is the need to consume electrolyte, numerical interference factors.
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Q
How long is the shelf life of each standard fluid?
AThe liquid is not opened for 3 months, one week after the liquid is opened.
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Q
What range should the flow rate be controlled in the flow tank?
AA maximum of 2M/S is recommended.
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Q
In which scenarios are your sensors applied more often? Is the drain outlet usable?
AThe surface water is in the majority, and the sewage outlet can be used, depending on the situation of the sewage outlet.
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Q
What is the membrane of ammonia nitrogen, what is it used for?
APVC film for ion exchange.
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Q
How often is the sensor monitored and how often does the brush turn?
AThe monitoring frequency is based on the frequency of sending instructions. The default brush is once every six minutes.
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Q
Why is three-point calibration for pH?
AThere are three points for PH calibration, which need to be calibrated according to the PH, such as 0-7 with 4 and 6.86 standard liquid calibration, 7-14 with 6.86 and 9.18 calibration.