129results about "Testing water hardness" patented technology

Disclosed is a reagent strip comprising test region(s) and reference region(s). The reference region(s) display a predetermined response to a range of possible concentrations of an analyte applied to the corresponding test region(s). Furthermore, the reference region(s) and the test region(s) are arranged on the reagent strip so as to facilitate analysis of a qualitative state of the analyte and optionally, calculation of a quantitative value of the analyte at point-of-collection. Also disclosed is a method of manufacturing such reagent strips, first involving printing the reference region(s) and the test region(s) in a continuous and alternating series on a test strip precursor substrate. The method also involves cutting the test strip precursor substrate perpendicularly to the printed columns to obtain one or more reagent strips. Also disclosed is a method encompassed in a mobile application for determining a qualitative state and optionally calculating a quantitative state of the analyte.

The present invention is directed to a water condition monitoring device and related methods of use that significantly reduce the cost of the water condition monitoring devices by replacing the expensive and bulky multiple sensor electrodes of currently available devices with a single set of two or three metal electrodes to detect and/or measure such water quality parameters as pH, electric conductivity, temperature, and dissolved oxygen content. A microcontroller activates each sensor one at a time in a continuous loop, processing the sensor signals into near real time water condition data, which may be stored, displayed, or sent to a remote location for storage or display.

Disclosed are a water quality analyzer and a method for analyzing water quality. The water quality analyzer includes a first disc system, a second disc system, a colorimetric system, a cleaning system, a mechanical sampling system, an analysis system and a central control display. The first disc system and the second disc system are axially rotatable. A plurality of sample locating positions and a chemical locating positions are provided on the first disc system along a circumference of the first disc system. A plurality of colorimetric cuvette locating positions are provided on the second disc system, and the colorimetric system is arranged at a circumference edge of the second disc system. The cleaning system and the mechanical sampling system are provided between the first disc system and the second disc system. The method includes water sampling, water sample injection, cleaning, reagent extraction, reagent injection, cleaning and colorimetric analysis.

The invention discloses a water quality detection device and detection method. The water quality detection device comprises an in-water real-time detection device and a ground water quality analysis box; a plurality of detection probes are arranged on an installation plate; a waste fluid tube is arranged in a waste fluid tube groove; test tubes are arranged in test tube grooves; one end of a slideplate, which is far away from a change-over switch, is provided with a standby water storage barrel; a plurality of reagent needle tubes are embedded in a cross plate in a clamped manner; a toothed bar A is fixedly arranged between slide rods; a rotating rod is fixedly provided with a linkage gear in a manner that the linkage gear passes through the rotating rod; and one side of a center plate, which is close to the linkage gear, is fixedly provided with a toothed bar B. The water quality detection device provided by the invention can be used for carrying out in-water real-time detection andground chemical analysis detection on water bodies in different water layers, has functions such as multi-layer detection, automatic water storage and the like, and can automatically add different types and quantities of chemical reagents and automatically switch the detection of the next water layer after detection. The invention further discloses a detection method of the water quality detectiondevice. The detection method is simple to operate and worthy of popularization.

The invention discloses a reagent and method for fast detecting water quality total hardness. The reagent for fast detecting the water quality total hardness comprises an indicator, a dyeing assisting agent and a sensitizer with the mass ratio of (35-50):(18-22):(25-37). The method for detecting the water quality total hardness comprises the following steps that 1, filter paper is immersed in a solution prepared from the reagent for fast detecting the water quality total hardness, soaked and dried, and water quality total hardness fast detecting test paper is obtained; 2, the water quality total hardness fast detecting test paper is immersed in a test solution prepared from a sample to be tested, and taken out after two seconds, the excessive solution on the test paper is thrown away, after color developing is complete, the standard colourimetric card is compared, and the water quality total hardness is obtained. The reagent for fast detecting the water quality total hardness is high in sensitivity, good in stability, easy and convenient to operate, economical and practical. The detecting method can fast detect the water quality total hardness on site, response time is short, testing speed is high, and the testing method can be used for fast testing the total hardness of drinking water, boiler water, alkaline mineral water, surface water, underground water, industrial consumption, waste water and the like.

This invention relates to methods and apparatus for determination of ion concentrations, particularly in downhole water from hydrocarbon wells, aquifers etc. It is useful in a wide range of applications, including predicting the formation of scale and fingerprinting waters from different sources. More particularly, the invention relates to the use of ligands whose electronic configuration is altered by the binding of the scaling ions within a water sample. These alterations are detected, for example by electrochemical means, and are indicative of the concentration of scaling ions in the sample.

The present invention provides a self-powered multi-parameter water quality monitor based on NB-IOT, including a main control chip, a NB-IOT communication module, a multi-parameter water quality detection module and a self-power supply device for providing power, and the main control chip is respectively Connected with the NB-IOT communication module and the multi-parameter water quality detection module; the main control chip outputs a parameter detection instruction to the multi-parameter water quality detection according to the operation instruction sent by the cloud received by the NB-IOT communication module module, processing the water quality detection result returned by the multi-parameter water quality detection module and uploading it to the cloud through the NB-IOT communication module.

The present invention provides a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of approximately 2 to 3, the method comprising measuring the deposition of calcium oxalate scale from the solution on a quartz crystal microbalance s speed. The microbalance has a top surface and a second bottom surface spaced from the solution, wherein the pH of the solution adjacent the microbalance is measured by a surface pH measuring assembly and electrochemically controlled within the range of about 3.5 to 9, Wherein, the working electrode (23) is coated with conductive material or made of conductive material. Hydrogen gas on the working electrode evolved in large quantities at a potential more negative than that required to achieve a pH of 3.5-9 in the solution close to the microbalance.

The invention discloses a computer technology-based water quality detection device convenient for sampling. The water quality detection device comprises a detection water tank; a water inlet pipe anda water outlet pipe are mounted at the top and the bottom of the outer wall of one side of the detection water tank through bolts respectively; a first water suction pump is mounted on the outer wallof one end, far away from the detection water tank, of the water inlet pipe through bolts; the water inlet end of the first water suction pump is connected with a diversion valve through a water pipe;diversion pipes distributed equidistantly are mounted on the outer wall of one end, far away from the first water suction pump, of the diversion valve through bolts; and electromagnetic valves are mounted on the outer walls of the circumferences of the diversion pipes through bolts. A pH meter is used for detecting a pH value of sampled water; a turbidity detector is used for detecting the turbidity of the sampled water; a water quality ion detector is used for detecting the ion concentration of the sampled water; a water quality hardness detector is used for detecting the hardness of the sampled water; and detection data is connected with a computer through a signal line to perform analysis and detection, so that the precision and accuracy of water quality detection are improved.

This invention relates to an analyzer for measuring and monitoring the behavior of the naturally occurring calcium ion within a cooling tower's makeup water and recirculating water, adjusting a cooling water scale and corrosion inhibitor treatment dosing to manipulate the behavior of the naturally occurring calcium ion, within the cooling tower water, to prevent scaling and corrosion within a cooling tower system.

A sensor including a substrate and a sensing element disposed on a substrate is provided. The sensing element includes a sensing matrix in contact with a flow of water, an indicator for one or more chemical species in the flow of water, and a selectivity component that reacts reversibly with the one or more chemical species. The sensor also includes a light source configured to direct light through the substrate and the sensing element. The sensor further includes a light detector configured to receive transmitted light from the substrate and the sensing matrix and to generate a signal representative of selective wavelengths of the light indicative of the one or more chemical species in the flow of water.

The invention discloses an underground water quality sensor comprising a cable, a fixing rack, a sensor main rod, and a probe. One end of the sensor main rod is connected with the cable, and the fixing rack is disposed between the cable and the sensor main rod, and in addition, the other end of the sensor main rod is provided with a probe. The probe comprises a positive pole and a negative pole, and the upper end of the probe is provided with a hardness alarming device, a PH value alarming device, a salinity alarming device, a water level alarming device, and a thermistor. During the use of the underground water quality sensor, the thermistor can be used for a certain temperature compensation automatically, and therefore the accurate analysis can be facilitated. The PH value alarming device and the hardness alarming device can be used for the monitoring of the PH value and the hardness of the water quality, and the salinity alarming device and the water level alarming device can be used for the detection of the salinity and the water level of the water quality. By using the underground water quality sensor, the different parameters of the underground water quality can be monitored accurately and effectively in a real-time manner.

Provided are a concentration-factor measurement device and method for accurately calculating a concentration factor of circulating water, and a method for measuring a water-quality index value of the circulating water. The concentration-factor measurement device includes a light-absorbance measurement unit (1) for measuring absorbance by irradiating each of cells (12A-12C) with light, and an electrode measurement unit (2) equipped with electrodes (16, 17) that are inserted into a water sample in a container (20). For each item of water quality, the device calculates a concentration factor on the basis of a measured value measured when the water sample (W) is the circulating water, and a measured value measured when the water sample (W) is makeup water. A plurality of concentration factors are calculated on the basis of the measured values for plural items of water quality. Hence an accurate concentration factor can be obtained.

The invention discloses an intelligent water quality purification and detection valve. The intelligent water quality purification and detection valve comprises an electric control valve body, a waterinlet, a water outlet, water quality detection devices, a water quality purification device, a control device, a display device and an early warning device. The water inlet and the water outlet are each provided with a water quality detection device. A water cavity is further provided with the water quality purification device. The water quality detection devices are eight-in-one multi-parameter sensors and can detect multiple parameters in drinking water. The water quality detection devices, the water quality purification device, the display device and the early warning device are connected with the control device correspondingly. The control device can control switching on and switching off of the electric control valve body automatically and the work states of the water quality purification device and the early warning device. The intelligent water quality purification detection valve is good in purification effect, high in detection precision and capable of performing online detection in real time, and a user can be informed of the real-time detection result of the water quality through the display device and the early warning device and can use the water safely.

Prior to adding detergent or chelant, the conductivity of water in a washing chamber is measured. The maximum concentration of hard water ions that could correspond to the 5 measured conductivity is determined, i.e., it is assumed that all of the conductivity is from calcium and/or magnesium ions in the water even though other ions may in fact be contributing to the measured conductivity. Enough chelating agent is added to the chamber to sequester this maximum concentration of hard water ions and the conductivity is measured again. Using the two conductivity measurements, the actual concentration of hard water ions 0 is determined. A chelant factor based on the actual concentration of hard water ions is then used to determine the amount of chelant to be added for subsequent wash cycles to sequester all of the hard water ions.

To provide a hardness measurement reagent unaffected by an M alkalinity in hardness measurement. A hardness measurement reagent as a one-solution type reagent includes a dye chosen from Eriochrome Black T (EBT) and Calmagite, triethanolamine, a glycol compound, and a pH buffer, in which the pH buffer includes a combination of amines selected from primary amines and secondary amines and a salt of a weak base.

The invention relates to a liquid-test device, which is used for determining the values of a plurality of properties of the liquid, comprising a plane base and a plurality of testing areas arranged on the plane base. Each testing area comprises a test subarea and a reference area close to the test subarea. Each test subarea can displays one color according to the property value as the chemical reaction result of the reagent and the liquid. The reference area comprises a plurality of reference colors.

Disclosed are methods that can be used to automatically calibrate a fluorescence-measuring instrument capable of continuously measuring the concentration of hardness in process water. The calibration method is used to compensate for drift of instrument and equipment, changes of operational conditions, and contamination of reagents and calibration standards. Calibration of the fluorescence-measuring instrument using the present calibration method improves both accuracy and repeatability for subsequent hardness concentration measurements.

Method for processing data of a system for controlling the hardness of water. A sensor (12, 33, 57) measures a parameter related to the hardness of the treated water (e.g. the conductivity). A processor receives the sensor data and decides whether or not to pass on a signal related to the parameter to further process. This ensures that incorrect hardness readings, such as data recorded right after the exchange of the ion exchanger cartridge, are not transmitted to a further process. Alternatively, an integral value (e.g. the total amount of water processed since the last cartridge change) is taken into account and the sensor data is adjusted.

The invention discloses a device and a method for monitoring a water regimen of goaf water of a coal mine automatically in real time. The device comprises a steel pipe, a steel jacket, a steel plate A, a steel plate B, testing components, a signal receiver and a controller. A pressure sensor, a temperature sensor, a pH sensor, a water quality hardness sensor, a TDS tester and an ORP meter are arranged on the outer surface of the steel pipe. The testing components are connected to the signal receiver, separately and are transferred to the controller by the signal receiver. An annular cavity isformed between the steel pipe and the steel jacket, the testing components are located in the cavity, the steel pipe and the steel jacket are cylinders equal in height and are coaxial, the steel plateA is arranged on the tops of the steel pipe and the steel jacket, and the steel plate B is arranged at the bottoms of the steel pipe and the steel jacket. Mine water penetrating holes are uniformly formed in the surfaces of the steel jacket and the steel plate, and wiring holes are formed in the steel plates. The device can monitor the water regimen of goaf water automatically in real time, alsocan set the monitoring time manually, and has the advantages of being high in efficiency, high in anti-interference capacity, small in project quantity, low in cost and the like.

The invention relates to an integrated ore slurry property multi-parameter online monitoring system, which comprises sensors, wherein the sensors are respectively connected with the input end of an analog quantity input and output module, and are used for detecting the ore pulp granularity distribution, concentration size, PH value, water quality hardness and flow rate; the digital quantity signaloutput end of the analog quantity input and output module is connected into the corresponding input end of a PLC (programmable logic controller); the PLC finally obtains the ore slurry parameter according to the input digital quantity signal and the program; the historical data inquiry, ultralimit early warning and dynamic protection can be realized with a touch control screen electrically connected with the corresponding port of the PLC through touch control; in addition, the corresponding port of the PLC is connected with a central control room PC host computer through an Ethernet module; the granularity and concentration sensor, the PH value sensor, the water quality hardness sensor and the flow rate sensor are respectively arranged in the corresponding interface position of a bypass tank body connected with the ore pulp main pipeline, so that the ore pulp state introduced into the bypass tank body is detected; the multi-parameter bypass on-line measurement can be realized.