Nephelometer

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Hangzhou Lohand Biological Technology Co.,Ltd

Zhejiang, China

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Measurement procedures：
1, zero turbidity water is poured into the sample bottle to the scale line, then screw on the cap, and clean the bottle water trace and fingerprints, it should be noted that the open not available when the hand is direct with the bottle body, so as not to leave fingerprints, affect the accuracy of measurement.
2, will be packed with zero turbidity water sample bottle, into the sample holder, and to ensure that the specimen bottle scale line with quasi specimen holder white line of position, and then covered with a shading cover.
3, wait for the stable after adjusting the zero adjusting knob, so that the display is zero.
4, the same device calibration using 100NTU standard solution, and is placed in the sample holder, adjustment knob, so that the display as the standard value 100.
5, 2, 3, 4, repeat steps, to ensure zero and calibration values are correct and reliable.
6, into the sample bottle, and stable to note the water turbidity value.
Overhaul:

Failure phenomenon	Possible causes	Repair method
1, after starting up, display	A、power line and socket connection is bad or loose	A、fastening socket or for a power line
2, measuring reaction	A light damage B, internal connector lose C, electrical system fault	A, replacement B, fastening C, maintenance
3, measurement instability or drift	A, a solution with bubbles or particles in does not stop moving B, circuitry within the apparatus of damp C, the outer surface of the bottled water sample D, external interference E, the supply voltage instability of	A re-sampling or extended reading time B, prolonging start preheat time preheating dehumidification C, dry specimen bottle D, eliminating the interference source E, exclusion of unstable factors
4. zero, less than zero	An adjustable zero without the use of zero turbidity water B, zero potentiometer damage C, zero range migration D, light path offset	A should adopt zero turbidity water B, replacement potentiometer C, W2 potentiometer adjustment board D, adjustment
5, not to the correction value	A, standard solution standard value is not accurate B, correction potentiometer is damaged C, range migration correction D, light path offset	Accurate preparation of standard solution B, replacement C, W1 potentiometer adjustment board D, adjustment
6. short stroke	A, due to the transport screen vibration caused by poor contact B, LCD LCD screen damage C, circuit board fault	A, check B, replacement C, maintenance

                                                            Product name
                                                            turbidity measurement device
                                                        
                                                            Model
                                                            WGZ-20
                                                        
                                                            Minimum Readout ( NTU)
                                                            0.1
                                                        
                                                            Measuring Range(NTU)
                                                            0--200
                                                        
                                                            Basic Error(F.S)
                                                            ±2.5%
                                                        
                                                            Power Supply
                                                            AC220V/50Hz
                                                        
                                                            Repeatability
                                                            ≤1.5%
                                                        
                                                            Zero Draft(F.S)
                                                            ±0.2%

Turbidity measurement device WGZ Series dispersive optical turbidity gauges are used to measure the degree of light scattering from insoluble particulate matter suspended in water or transparent liquids, and to characterize the problem of suspended grain content in these substances. The turbidity measurement device can be widely used in power plants, water plants, domestic sewage treatment stations, beverage plants, environmental protection departments, industrial water, alcohol, pharmaceutical industry, turbidity measurement, popular prevention departments, hospitals, and so on.

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