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FAQ Category

FAQ

  • Q What applications can PROBEST's water quality analyzers be used for?

    A
    Water Monitoring Analysis Applications:

    Water source monitoring: to ensure the safety of drinking water
     
    Environmental protection monitoring station: monitoring environmental water quality
     
    Municipal water treatment process: monitor water quality treatment effectiveness
     
    Municipal water quality monitoring: ensuring the quality of water supply
     
    Rural tap water monitoring: ensuring rural drinking water safety
     
    Circulating cooling water management: widely used in industrial cooling systems
     
    Swimming pool water management: ensuring water safety in swimming places
     
    Factory aquaculture: monitoring water quality to optimize the aquaculture environment, etc.

  • Q What is the minimum number of parameters that can be connected to the MP301? What is the maximum number of sensors that can be connected? What additional parameters can be added?

    A At least one sensor can be connected individually. The maximum number of sensors that can be connected to the MP301 is 6. It can also display the temperature and add pressure sensors.
    Max is 6sensors+pressure+temp. could be connected, please help check what parameters do you need?
    When choose Mp301, please kindly also let us know for saltywater or freshwater monitoring?

    MP301 multi-parameter online analyzer: suitable for long-term on-line online monitoring, measuring up to 8 parameters simultaneously, including: Temperature, Depth, pH, ORP, Conductivity & Salinity & TDS, Turbidity, DO, Chlorophyll, Blue-green algae, Ammonia nitrogen, Nitrate, Chloride, Fluoride. Optional accessories such as bluetooth module, battery pack, and handheld communicator are also available for easy portable measurement.

    Application
    Multi-Parameter water quality online monitoring of rivers, lakes and reservoirs.
    Water quality online monitoring of drinking water source, ground water and sea water.
     

  • Q Portable Lab Meter Selection PMI800 series

    A For digital portable sensor, PROBEST currently has PH, ORP, DO, turbidity, SS, chlorophyll, blue-green algae, COD. 
    For single-channel portable mainframe can choose digital sensors (DO, turbidity, SS, chlorophyll, blue-green algae) & analog PH, ORP

    PMI800 when used with portable electrodes, the PMI800 portable analyzer can measure a variety of parameters such as pH, ORP, Conductivity (convertible Salinity & TDS), Dissolved oxygen, Turbidity, Suspended solids, Chlorophyll, Blue-green algae, COD ect. The connected electrode type can be automatically identified, single channel and dual
    channel configurations are available.

    It has the advantages of comfortable operation, convenient testing and wide application.


     

  • Q Does every colorimetric meter PCM200 series have to be pre-processed?

    A If the water quality is relatively simple, clean, can not be equipped with pre-treatment.
    When the water samples in the chromaticity, turbidity, suspended solids, oil and grease concentration is too large, it is recommended that the instrument should be appropriate pretreatment.

  • Q PROBEST's PTU-800 turbidity sensor and PTU-600 turbidity sensor differences

    A
    Q：PROBEST's PTU-800 turbidity sensor and PTU-600 turbidity sensor differences
     
    A: There is a difference in size, PTU-600 sensor size is smaller, and the top of the sensor has a thread;
       PTU-800 turbidity analyzer range can be selected, materials can be selected; accuracy, repeatability, resolution is better!

  • Q About PROBEST product lead time

    A
    Q：About PROBEST product lead time?
     
    A: Conventional moisture meters in small quantities, PROBEST will have rolling stock, but the products are 100% tested into the warehouse, and will be tested and calibrated again, and packaged before shipment. So the regular is 2-10 days. Please provide inventory verification.
    As Probest is the first-hand first-source direct water analyzer monitoring machines maker. Welcome to have online zoom meeting or visit onsite. 
     

  • Q Can PROBEST sensors add or cut wires?

    A
    Q: Can PROBEST sensors add or cut wires?
     
    A: Digital sensors can be cut to extend or shorten the cable, but analog sensors cannot be cut (PH-500, POP-500, PEC-500, PDCL-400). Please confirm the required cable length when placing an order, so as to ensure no leakage and data transmission.

  • Q PCM200-CODcr Chemical Oxygen Demand (CODcr) Water Quality Online Monitor

    A yes Question: What is the test method of the PCM200-CODcr Chemical Oxygen Demand (CODcr) Water Quality Online Monitor?

    Answer:  The dichromate process. Under certain conditions, the mixed solution of potassium dichromate and sulfuric acid is added to the water sample, and the reaction is carried out in the digestion tank, so that the organic reducing matter in the water sample is oxidized. In the reaction, Cr6+ is reduced to Cr3+, which causes the color change of the mixed solution. The color change of the mixed sample is detected by photoelectric colorimeter, and finally converted into the content of oxygen required by the redox reaction, which is the chemical oxygen demand of the water sample under test.

    yes Question: What is the typical application?

    Answer:  On-line monitoring of municipal sewage inlet and outlet
                   On-line monitoring of pollution source outlet
                   On-line monitoring of industrial wastewater outlet.


  • Q Is there any 24V DC or 230V AC transmitter for PROBEST transmitters?

    A
    PROBEST's UNI-20, DXC-20, MUC-200 controllers are available in a special DC version that supports a wide range of voltages from 9-36VDC, with -1 added to the order number, and also in an AC version that is a wide range of voltages from 85-500VAC.

    Be sure to check whether DC or AC is required on site when placing an order.

  • Q If UNI-20, DXC-20, MUC-200 controller connected to the UVCOD can display COD, BOD, TOC values at the same time

    A
    If you want to display BOD, TOC value, when connected with PROBEST controller (transmitter) UNI-20, DXC-20, MUC-200 need to be noted in the order, can be set in the second interface display, but can not be displayed in the same interface.

  • Q Our UVCOD PUVCOD-900 PUVCOD-600 COD BOD TOC Water Analyzers Applicable Environment

    A
    Our UVCOD PUVCOD-900 PUVCOD-600 COD BOD TOC Water Analyzers, UV method is applicable to water containing organic pollutants of aromatic hydrocarbons or benzene rings, pH between 4.5 and 9, and water samples containing organic pollutants of aromatic hydrocarbons or benzene rings with stable composition.

  • Q Difference between colorimetric residual chlorine CL-201 and constant pressure residual chlorine CL-400

    A
    The principle is different, the colorimetric method CL-201 is more accurate, and the constant pressure method CL-400 mainly measures the trend. 
     

  • Q PTU-800 turbidity and PTU-600 turbidity sensor difference

    A
    There is a difference in size, PTU-600 size is smaller, and the top of the sensor has a thread;
     
    PTU-800 range can be selected, materials can be selected; accuracy, repeatability, resolution is better!

    For them also have with or without brusher for your choice to meet customers different budget need. 

  • Q About PROBEST product delivery time

    A
    In case of small quantity of conventional water quality analyzers, as we are the direct factory, PROBEST has rolling stock, and the order can be shipped within 3-10 working days after payment received. As all products are with 100% test before shipment.

  • Q Can the PROBEST sensors extend or cut wires (cables)?

    A Digital sensors are able to cut wires to extend or shorten the cable, analog sensors can not cut wires (PH-500, POP-500, PEC-500, PDCL-400).

  • Q Can ion chlorine be measured by residual chlorine or total chlorine?

    A
    Couldnt, the residual chlorine is measured by hypochlorous acid and hypochlorite; chloride ion is usually measured by ion-selective method in the market. So could choose our PISE-900 with ion chlorine. 

    https://probesti.com/ammonia-nitrogen-nh4-nitrate-no3n-potassium-ion-k-chloride-cl-fluoride-f-ion-water-analyzer-sensors.html

  • Q What are the methods of color measurement?

    A The color measurement methods are platinum-cobalt color measurement method and dilution multiple method (GB 11903-1989). The two methods should be used independently, and there is generally no comparability between the measured results. The platinum-cobalt color measurement method is suitable for the determination of clean water, slightly polluted water and slightly yellow water, as well as cleaner surface water, groundwater, drinking water and reclaimed water, wastewater after advanced treatment, etc. The dilution multiple method is usually used to determine the Chroma of industrial wastewater and surface water with serious pollution.

    The platinum-cobalt color measurement method is a standard unit of chromaticity, commonly known as 1 degree, when 1L water contains 1mg Pt (IV) and 2mg cobalt chloride (II) Hexahydrate. A standard Chroma unit is prepared by adding 0.491 mg K2PtCl6 and 2.00 mg CoCl2_6H 2O to 1L water, also known as the platinum-cobalt standard. Standard chromaticity units can be obtained by adding standard platinum-cobalt reagents several times. Owing to the high price of potassium cobalt chloride, K2Cr2O7 and CoSO4_7H2O are usually used to prepare standard solution of alternative Chroma according to certain proportion and operation steps. When measuring the Chroma, the Chroma of the water sample can be obtained by comparing the water sample to a series of standard liquids with different Chroma.

    The dilution multiple method is to dilute the water sample with optical pure water to nearly colorless and then move it into the colorimetric tube. Under the white background, the color of the water sample is darker than that of optical pure water with the same liquid column height. If the difference is found, dilution is carried out until the color can not be detected. At this time, the dilution multiple of the water sample is the value expressing the color intensity of the water, and its unit is double.

    https://probesti.com/china-wholesale-manufacturer-real-time-digitlal-color-water-quality-test-monitoring-instruments-sensors-and-meters-for-color-measurement-for-drinking-water.html

  • Q How about Probest Delivery Time?

    A For PROBEST Hot selling products, DO Sensor, Turbidity Meter, TSS Sensor, UVCOD ect, we have rolling stock, so the lead time is 1-2working days after payment received. 
    1-2 working days for final tesing, package. 

  • Q What is the Chroma of Water?

    A The Chroma of water is the standard when measuring the color of water.
    The Chroma in water quality analysis usually refers to the true color of water, that is, the color produced by soluble substances in water samples. Therefore, before determination, water samples need to be clarified, centrifuged or filtered with 0.45 um filter membrane to remove SS, but not with filter paper, because the filter paper can absorb part of the color of water.

    The result of the determination of the original sample without filtration or centrifugation separation is the apparent color of water, that is, the color produced by both soluble and insoluble suspended substances. In general, the apparent color of water can not be measured and quantified by platinum-cobalt color measurement. Usually, the characters such as shade, tone and transparency can be described by words, and then determined by dilution multiple method. The results measured by platinum-cobalt color measurement and the Chroma values measured by dilution multiples are often not comparable.

    https://probesti.com/china-wholesale-manufacturer-real-time-digitlal-color-water-quality-test-monitoring-instruments-sensors-and-meters-for-color-measurement-for-drinking-water.html

  • Q PROBEST Why could have stable quality? How about Probest tracking?

    A During and after the production process, we conduct production process inspections and inbound/outbound inspections.

    Our inspectors calibrate and inspect all products strictly in accordance with the product inspection procedures.

    Currently, we have independently developed a variety of testing and tooling systems that are efficient and reliable. The online automatic monitoring instrument tooling testing system for water quality by colorimetry can automatically test multiple products simultaneously. The sensor calibration testing tooling system can also automatically test multiple sensor products simultaneously, while the sensor data aging tooling system is capable of providing 24-hour uninterrupted data tracking for 300 sensors. The residual chlorine calibration testing workstation system allows for one-click calibration of multiple test points. The product test data is automatically uploaded to the ERP system, enabling real-time alerts for abnormal data. Related test records and data can be retrieved at any time through the SN number for product quality traceability. From product research and development to manufacturing and delivery, Probest strives to achieve the best, specializing in manufacturing and pursuing quality with dedication.
    Every product from Probest with a sole series No for tracking, all test result will be recorded in our ERP system. 


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