43 results about "Electronic analytical balance" patented technology

The invention discloses a gas hydrate sampling and analyzing device and a method. The device comprises a hydrate generation kettle, a sampling module, a drive control module, a sample decomposition module, a weighing analysis module and a vacuumizing module, wherein a stirrer is arranged in the hydrate generation kettle; a gas inlet pipe and a liquid inlet pipe are connected to the top part of the hydrate generation kettle; the sampling module is formed by a transparent high pressure resistant resin glass tube, an upper compression piston, a lower compression piston, an upper hydraulic linkage shaft, a lower hydraulic linkage shaft and a sample delivery pipe; the weighing analysis module comprises an electronic analytical balance, a gas chromatograph and relevant connecting pipelines and components; the drive control module comprises a compression piston, a drive linkage shaft, a hydraulic driver, a spiral elevator, a control computer and the like; and the vaccumizing module is formedby a vacuum pump and relevant connecting pipelines and components. Any height space in a reaction kettle can be sampled with any volume, and any phase state of gas phase, solution phase, hydrate slurry phase and hydrate phase in a hydrate reaction system can be sampled and analyzed.

The invention discloses a separation and measurement device for vertical infiltration quantity and horizontal migration quantity of water contained in a litter layer after rainfall is intercepted by the litter layer. The device comprises a steel ring, a drum, a funnel, a water collection tank and electronic analytical balances, wherein the steel ring is nested in the drums, and a nylon mesh is paved at the bottom of the drum for holding litter; the funnel is located inside the drum and below the steel ring, is connected to the flow collection tank through a round tube, and is used for transferring vertical infiltration water in the litter layer to the water collection tank; the water collection tank is located outside the drum, and used for receiving water transferred from the funnel; and the electronic analytical balances are respectively located at the lower parts of the drum and the water collection tank, and used for measuring the vertical infiltration quantity and the horizontal migration quantity of water in the litter layer. The device provided by the invention can separate and measure the vertical infiltration quantity and the horizontal migration quantity of water in the litter layer under the condition of natural rainfall or artificial rainfall, so as to achieve quantitative research on water movement in the litter layer.

The present invention relates to a method for measuring critical non-corrosive aerated concentration value of material. It is characterized by that when the material is measured, its testing liquor is a gas-liquid mixed liquor. According to the experiment requirements of test piece it can define the power and amplitude of magnetostrictometer which is used for making experiment, the testing liquor is aerated, when the aerated concentration is respectively C1, C2, C3....., CN, the experiment can be made. Said invention also provides the concrete method and steps of said measuring experiment.

The invention relates to an electronic analytical balance capable of conducting horizontal calibration. The electronic analytical balance comprises a measurement base and a measurement chamber arranged on the measurement base, wherein the measurement base comprises a control panel, a display screen and a measurement platform arranged on the upper surface of the measurement base, the measurement chamber comprises a glass face plate and a frontward-opened door, at least three supports which are independent of one another are arranged below the measurement base, each support can be stretched out and drawn back, a level gauge is arranged on the measurement base, alcohol is filled into a level tube, a bubble is contained in the level tube, and markings are marked on the surface of the level tube. The technical scheme is adopted for the electronic analytical balance, therefore, the balance can be in the horizontal state in each time of measurement, measurement errors are reduced, and the aim of accurate measurement is achieved through the electronic analytical balance.

The invention provides a device and method for rapidly detecting the ash content and the heat value of coal. The device comprises an oxygen bomb, a pressure detection unit, a high-pressure control unit, a throttle unit, a CO2 detection unit, a PLC (Programmable Logic Controller) control unit, a host computer, an electronic analysis balance and a power supply. According to the device and method for rapidly detecting the ash content and the heat value of coal, the method comprises the following steps: confirming the ash content according to a mass ratio before and after coal combustion, confirming a high-level heat value of a coal dry basis according to the concentration of CO2 and peak pressure after pressure is stabilized, confirming a low-level heat value of a coal air dried basis according to the high-level heat value of the coal dry basis, and confirming a low-level heat value of a coal received basis according to the low-level heat value of the coal air dried basis, and the like. The device and the method are low in testing environment requirement and rapid and stable in testing.

The invention discloses an electronic analytical balance. The electronic analytical balance comprises a base, wherein a weighing platform is arranged above the base; a weighing sensor is arranged between the base and the weighing platform; the base is provided with an operation panel; a sealed cover made of PCB (Printed Circuit Board) is covered above the weighing platform; the electrostatic interference can be effectively prevented by setting the sealed cover of the PCB board, so that the weighing precision is improved.

The invention discloses a preparation method of a Co<0.85>Se electrocatalytic material and application of the Co<0.85>Se electrocatalytic material in a sensitive battery taking porphyrin as a dye. Thepreparation method of the Co<0.85>Se electrocatalytic material comprises the following steps of (1) weighing selenium powder and cobalt chloride hexahydrate by an electronic analytical balance, and placing the selenium powder and the cobalt chloride hexahydrate in a small beaker; (2) adding primary water into the small beaker so that the weighed compound is dissolved, adding hydrazine hydrate, placing a magnet, and placing the small beaker on a magnetic heating agitator for stirring; (3) pouring a solution in the small beaker after stirring into a reaction kettle, and placing the reaction kettle in a drying box for reaction; and (4) cooling to a room temperature after reaction is stopped, reducing pressure and filtering, alternatively washing with the primary water and ethyl alcohol, anddrying the obtained solid in a vacuum drying box. The prepared Co<0.85>Se electrocatalytic material has favorable electrocatalytic activity and stability on I3<-> in an electrolyte.

The invention belongs to a composite material testing technology, relating to an improvement on an oxidation resistance testing device of a carbon/carbon composite material, which comprises a platform(8), a support(9), a heating device, a temperature testing device (7) and a measuring balance(5). The improvement on an oxidation resistance testing device of a carbon/carbon composite material is characterized in that: the heating device is a medium frequency power supply(1) with a induction coil(2); the measuring balance(5) is an electronic analytical balance; measured sample is arranged in a testing crucible(10) at the central hole of the induction coil(2), and hung on the hook at the bottom of the electronic analytical balance; the temperature testing device(7) is an infrared radiation thermometer; a computer(6) is respectively connected with the output terminals of the electronic analytical balance and the infrared radiation thermometer through serial ports. The improvement on an oxidation resistance testing device of a carbon/carbon composite material has the advantages of convenient and quick operation and short measuring interval; the measuring precision is high with the computer controlling the measurement process automatically; and the weight loss situation of carbon/carbon composite material can be measured online.

The invention relates to a built-in drying system for an electronic analysis balance, which belongs to the technical field of an electronic analysis balance and comprises a top cover, a cabin body, a drying agent storage box and a locking switch, wherein the top cover is in a square shape and is positioned at the back part of a weighing part, one side of the top cover near the front side forms a hinge rotating shaft device with a balance casing, the locking switch is arranged at one side of the top cover near the back side, the cabin body is in a rectangular structure, the upper opening is open, a plurality of air holes are arranged on the surface between the cabin body and the weighing part of the electronic balance, the rest three sides and the bottom side are in a sealed structure, a square sealing ring is arranged on the upper end of the top end of the cabin body, two springs are arranged above the back side of the outer part of the cabin body, the drying agent storage box is positioned in the cabin body and is in a cuboid structure, the upper opening of the drying agent storage box is open, a lifting handle is arranged on the upper opening, one forward side of the drying agent storage box is a tight metal screen, the rest three sides and the bottom side are in a sealed structure, solid drying agents are placed in the drying agent storage box and used for absorbing moisture in the balance, so that the weighing and analysis accuracy of the balance is ensured.

The invention provides an electromagnetic balanced type force sensor based on an optical lever, and an electronic balance. The sensor comprises the optical lever, a PSD element, an electromagnetic coil and a closed-loop detection system; the optical lever is used for producing a beam, and reflecting the beam to the PSD element; the PSD element is used for detecting displacement of an optical leverreflecting light spot; the PSD element is connected with the closed-loop detection system, and the closed-loop detection system is connected with an electromagnetic coil. A photoelectric system for displacement detection of the existing electronic analysis balance is skillfully replaced with a displacement detection system composed of the optical lever and the PSD element; the optical lever technology, the PSD element and the electromagnetic force sensor are integrated so as to further improve the detection sensitivity of the existing electronic analysis balance.

The invention discloses a sulfur measurement device for automatically weighing barium sulfate. A measurement method of the sulfur measurement device includes: placing a sample in a combustion furnace so as to combust impurities, then preparing the sample into a solution for stirring, removing chloride ions through a first stirring device and a second stirring device, starting to weigh the barium sulfate after ashing of a filter paper, feeding a weighing bottle into a chuck of a feeding rotation disk under action of a tableting bottle, enabling a clamping rod to move down and clamp the weighing bottle to move up when the weighing bottle moves to a position below a clamping weighting mechanism, and simultaneously completing a weighing action for the barium sulfate through an electronic analytical balance, transporting the weighing bottle forward after placing the weighing bottle on a toggle chain once more until the weighing bottle leaves the measurement device, and then repeating the above process. The sulfur measurement device for automatically weighing the barium sulfate can automatically complete measurement work of the barium sulfate, facilitates improvement of measurement quality, and simultaneously reduces physical effort required for operating personnel.

The invention relates to an electronic analytical balance with an automatic leveling function. The electronic analytical balance comprises a balance body and a leveling component. The leveling component comprises a first air spring, a second air spring, a third air spring, a fourth air spring, a first tilt angle sensor, a miniature air compression pump, a first three-way electromagnetic valve, a second three-way electromagnetic valve and a controller. The first tilt angle sensor is arranged at the bottom of the balance body, the first air spring, the second air spring, the third air spring andthe fourth air spring are respectively arranged at four corners of the bottom plate of the balance body, and the miniature air compression pump communicates with air inlets of the first three-way electromagnetic valve and the second three-way electromagnetic valve through air pipes. According to the electronic analytical balance with the automatic leveling function, automatic leveling of the balance can be achieved, manual operation is not needed, and errors caused by manual adjustment are reduced to a large extent.

The invention provides an electronic analytical balance for a laboratory. The balance comprises a support base, a blower, a first hose, a dust box, a filter net, a second hose, a gas pipe, a rubber block, a shock absorbing spring, a baffle and a sponge plate, wherein the blower and the dust box are both installed on the upper end surface of the support base, the right end of the first hose is assembled at the left end of the blower, the filter net is installed on the right side inside the dust box, the lower end of the second hose is assembled on the left side of the upper end surface of the dust box, and the gas pipe is installed above the main body of the balance through a bent rod. The design above realizes the function of dust removal on the outer wall. The rubber block is attached tothe outer surface of the main body of the balance, the inner end of the shock absorbing spring is fixed on the outer surface of the rubber block, the outer end of the shock absorbing spring is assembled on the inner surface of the baffle, and the sponge plate is assembled on the outer surface of the baffle. The design above realizes the function of protection. The electronic analytical balance fora laboratory is simple in operation, realizes the function of dust removal of the outer wall, and has the advantages of strong protection, safety, stability and reliability.

The invention discloses a method capable of accurately measuring the chromium content in a capsule. The method is to select an atomic absorption spectrometer; select an electric heating plate and an automatic sampler; select a chromium hollow cathode lamp; select a micropipette gun; select a transverse pyrolytic graphite tube and an electronic Analytical balance; select Cr standard stock solution; select OP emulsifier; select Merck pure nitric acid, superior pure hydrogen peroxide, superior pure hydrochloric acid, ultrapure water and argon; accurately weigh the capsule sample in a beaker, add Put concentrated nitric acid on a temperature-controlled electric heating plate, heat it in a fume hood, add hydrogen peroxide dropwise to digest to a light yellow transparent solution, then add concentrated HCl and steam until it is nearly dry, remove it, add OP emulsifier, and use ultrapure water Set the volume on the machine to be tested; take the chromium standard solution, the instrument will automatically dilute it online, and measure each sample, and draw the working standard curve of chromium under the conditions of the instrument. The method can accurately detect the chromium content in the capsule, has high determination efficiency, and protects people's health.

The invention relates to a system and a method for rapidly estimating the total content of harmful gases in air. The system comprises a detection box, an air suction pump arranged in the detection box, a first dryer, a cyclone dust collector, an inhalable particle cutter, a harmful gas absorption bottle, a second dryer, a first electronic analytical balance, a second electronic analytical balance, and a control panel arranged outside the detection box. An air inlet of the air suction pump extends out of the detection box through a pipeline, an exhaust port of the air suction pump is sequentially communicated with the first dryer, the cyclone dust collector, the inhalable particle cutter, the harmful gas absorption bottle and the second dryer through pipelines and then extends out of the detection box, the harmful gas absorption bottle is filled with a potassium permanganate aqueous solution, the harmful gas absorption bottle and the second dryer are respectively and correspondingly arranged on weighing platforms of the first electronic analysis balance and the second electronic analysis balance, and the air suction pump, the first electronic analysis balance and the second electronic analysis balance are electrically connected with the control panel. The system has the advantages that the structure is simple, and the total content of harmful gas in the air can be quickly and relatively accurately estimated.

The invention relates to an emergency handling vehicle for highly-dangerous chemicals, which belongs to the technical field of chemical defense. The emergency handling vehicle comprises a shelter and a vehicle-mounted platform, wherein the shelter is a rectangular body with a large plate type structure, and the shelter and the vehicle-mounted platform are fixed by a suspension lock; the shelter further comprises an information cabin, an analysis experimental cabin and a safeguard equipment cabin; a spectrophotometer, a display, a printer, a thermal analysis instrument, an electronic analysis scale, a reaction cabinet and other analysis experimental equipment are arranged in the analysis experimental cabin, wherein an individual protection equipment cabinet and a decontamination device cabinet are arranged in the safeguard equipment cabin, and experimental equipment in the analysis experimental cabin is utilized to make primary judgment on the pollution condition of the experimental equipment in the analysis experimental cabin and analyze the pollution component, concentration and pollution scope in the field; and analysis data is transmitted to the information cabin by a data transmission line, an aerovane and a holder camera for monitoring are used for detecting the wind velocity and the peripheral situation in the field, and all the information is transmitted to headquarters by a wireless pattern transmitting antenna and a wireless network bridge antenna, so as to provide reliable reference for field handling and commanding.

The invention relates to the field of electronic weighing equipment. The invention further discloses an electronic analytical balance for mass measurement. The electronic analytical balance for mass measurement comprises an electronic analytical balance seat; five sealed glass doors are arranged at the top of the electronic analytical balance seat; a weighing linkage shaft for weighing transmission is arranged in the middle of the top end of the electronic analytical balance seat; the top of the weighing linkage shaft is fixedly connected with a tray located above the electronic analytical balance seat; and the bottom end of the weighing linkage shaft is connected with a weighing metering mechanism in the electronic analytical balance seat. The invention discloses an electronic analyticalbalance for mass measurement. An auxiliary supporting ring structure additionally linked with the tray is additionally arranged; by utilizing the semi-ring clamping plates on the two sides of the auxiliary supporting ring, a round-bottom flask or a test tube containing a liquid reagent can be conveniently clamped for mass measurement, the round-bottom flask and the liquid reagent do not need to betransferred to a beaker, and then the beaker is placed on a tray for mass measurement, so that the weighing steps of the liquid reagent are reduced, and the weighing efficiency of the liquid reagentis improved.

The invention relates to a scutellaria baicalensis test method based on hypertensive mice. The method comprises the following step of: preparing 10 clean-grade experimental animals, namely spontaneous hypertensive rats and Wister rats, experimental medicines, namely scutellaria baicalensis and benazepril, a kit, an experimental instrument, a water bath constant-temperature oscillator, a vortex mixer, a centrifugal machine, a thermostat, an enzyme-labeling instrument, an electronic analytical balance, an animal dissecting instrument and an experimental table. The invention further relates to a liquid medicine storage device and method. The liquid medicine storage device comprises a station conveying device (2) and is used for packaging liquid medicine in a liquid medicine carrier (1), wherein the station conveying device (2) comprises a conveying line (15) on which conveying molds (16) are distributed; the conveying molds (16) are of hollow structures, and mold process notches (17) are formed in the upper ports of the conveying molds (16). The device is reasonable in design, compact in structure and convenient to use.