| 单词 | hydrometer |
| 例句 | He handed me a white enamel graduate and what looked like a battery hydrometer. Invisible Man 1952-01-01T00:00:00Z This is done by measuring the fraction of a floating object that is submerged—for example, with a hydrometer. College Physics for AP Courses 2015-08-12T00:00:00Z It is usually a form of hydrometer with a special scale. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z This weight is ascertained by means of a "hydrometer," a glass tube, stopped, and loaded with some small shot at its lower end. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z It has been proposed to determine the strength of the bleach solution by the use of a hydrometer but the results are not sufficiently accurate and the method cannot be recommended. Chlorination of Water 2011-09-13T02:00:32.243Z Mrs. B. By means of an hydrometer; this instrument is made of various materials, and in different forms, one of which I will show you. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z The glass hydrometer is filled with air and weighted with lead at the bottom. College Physics for AP Courses 2015-08-12T00:00:00Z The divisions on the scale read downward, so as to measure the length of the stem which stands above the surface of any liquid in which the hydrometer is floated. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z At 7 p.m. on Saturday down comes the Navigation Department's inspector, with his hydrometer, to watch you finish. From Chart House to Bush Hut Being the Record of a Sailor's 7 Years in the Queensland Bush 2011-06-08T02:00:16.290Z It is impossible to tell exactly the degree or state of the fruit and syrup without a hydrometer. Hand-Book of Practical Cookery for Ladies and Professional Cooks 2011-03-23T02:00:22.007Z On a recent visit to the winery, he was on the floor drilling and putting up drywall in between arranging barrels and preparing the hydrometers. Whiskey, Wine and Moonshine, Born in the County of Kings 2010-10-09T15:00:00Z The density or weight of a lye is considerably greater than that of water, depending upon the amount of alkali dissolved, and its weight is usually determined by a hydrometer. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. Errors of observation may occur with the hydrometer, if it be put into water without being clean, or without being carefully wiped. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z It somewhat resembles Nicholson's hydrometer, being constructed so as to float in water and having an upright graduated stem, on the top of which is a metal pan. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli Alcoholom′eter, an instrument constructed on the principle of the hydrometer, to determine from the specific gravity of spirituous liquors the percentage of alcohol they contain, the scale marking directly the required proportion. The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide Among its manufactures are foundry and machine shop products, sheet-iron, silk, glass, thermometers and hydrometers, bobbins and refrigerating machines. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" We must likewise employ fresh portions of water in considerable quantity, until it comes off entirely free from salt, which we may ascertain by means of the hydrometer formerly described. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries It should be wider than the hydrometer, and always filled to the brim. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z The capillary hydrometer consists simply of a small pipette with a bulb in the middle of the stem, the pipette terminating in a very fine capillary point. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" Filling the shaving-mug with oil, the lecturer dropped into it his hydrometer, which, after gracefully dancing up and down for a moment, remained stationary. The Atlantic Monthly, Volume 15, No. 90, April, 1865 The rubber tube is inserted in the cell and enough electrolyte drawn up into the syringe to float the hydrometer so as to be able to obtain a reading. The Automobile Storage Battery Its Care And Repair When the specific gravities of acid liquors are to be ascertained, we must use a glass hydrometer, as represented Pl. vii. fig. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries Why it is that with the hydrometer showing a considerable humidity in the air the general effect of the climate is that of dryness, scientists must explain. Our Italy A third way, and probably the most reliable is by the use of the hydrometer. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine For example, in 1812 he published a brochure on Hydrostatics, in which were described various hydrometers and their application. James Cutbush An American Chemist, 1788-1823 It will therefore sink farther in a light liquid than in a heavy one, since it will require a greater volume of the light liquid to equal the weight of the hydrometer. The Automobile Storage Battery Its Care And Repair The hydrometer is used for measuring the specific gravity of water and other liquids. Orthography As Outlined in the State Course of Study for Illinois The liquid should have a specific gravity of 5° on the acid hydrometer. On Laboratory Arts The hydrometer is a sealed glass tube, with a graduated scale somewhat resembling a thermometer. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine He also provides an hydrometer, thermometer, and particularly a barometer, duly observing the instructions accompanying each, their utility and particular uses. The Practical Distiller An Introduction To Making Whiskey, Gin, Brandy, Spirits, &c. &c. of Better Quality, and in Larger Quantities, than Produced by the Present Mode of Distilling, from the Produce of the United States Some hydrometers are not marked with figures that indicate the specific gravity, but are marked with the words "Charged," "Half Charged," "Discharged," or "Full," "Half Full," "Empty," in place of the figures. The Automobile Storage Battery Its Care And Repair The solution was Page 45 maintained at a constant point by taking hydrometer readings two or three times a day, maintaining a reading of about 1.175. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel May 1818—"An Act for establishing the use of Sikes's hydrometer in ascertaining the strength of spirit, instead of Clark's hydrometer." A Treatise on Adulterations of Food, and Culinary Poisons Exhibiting the Fraudulent Sophistications of Bread, Beer, Wine, Spiritous Liquors, Tea, Coffee, Cream, Confectionery, Vinegar, Mustard, Pepper, Cheese, Olive Oil, Pickles, and Other Articles Employed in Domestic Economy Continue the charging operation until the cells begin to give off gas freely; or until the specific gravity of the electrolyte, measured by the hydrometer, stands at 1.24. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine The temperature is taken, and the hydrometer is immersed in the fluid. A Text-book of Assaying: For the Use of Those Connected with Mines. Thus if the hydrometer sinks in the electrolyte until the electrolyte comes up to the 1.150 mark on the stem, the specific gravity is 1.150. The Automobile Storage Battery Its Care And Repair The instruments used in obtaining the results were a thermometer and a hydrometer. The First Landing on Wrangel Island With Some Remarks on the Northern Inhabitants Nearly any filling station has the necessary hydrometer. If You're Going to Live in the Country Since its strength is apt to vary, however, it is best to mix the electrolyte with the aid of the hydrometer furnished with the battery. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine The degrees on Baumé's hydrometer agree among themselves in being at equal distances along the stem; but they are proportional neither to the specific gravity, nor to the percentage of salt in the solution. A Text-book of Assaying: For the Use of Those Connected with Mines. The acid which causes the corrosion may be spilled on the battery when hydrometer readings are taken. The Automobile Storage Battery Its Care And Repair An instrument much used on the Continent is the Beaumé hydrometer. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association This gave her a solution of pearl ash or potassium carbonate whose concentration she tested with an egg as a hydrometer. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Mix the electrolyte in a stone crock, or glass container, stirring with a glass rod, and testing from time to time with a hydrometer. Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine Some hydrometers are graduated so as to show at a glance the percentage composition of the liquid they are intended to be used with. A Text-book of Assaying: For the Use of Those Connected with Mines. The first is that the readings taken with a hydrometer will then be misleading. The Automobile Storage Battery Its Care And Repair The Twaddell hydrometer, or instrument for measuring the specific gravities of liquids, is so constructed that when it stands in water, the water is just level with its zero or 0° mark. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association It was Marion Rose, up by the hydrometer that looked something like a lone beehive perched on a wild slope by itself. The Lookout Man Determine the specific gravity by the specific gravity bottle or hydrometer, and the oxides of nitrogen by the permanganate method described under nitro-glycerine. Nitro-Explosives: A Practical Treatise The mark on the hydrometer stem, level with the surface of the liquid, is read off. A Text-book of Assaying: For the Use of Those Connected with Mines. This gradually diffuses with the main electrolyte and causes the hydrometer to show a higher density than before. The Automobile Storage Battery Its Care And Repair The adulteration of milk by water may always be detected by the hydrometer, and in this respect it may be a useful appendage to household utensils. The Mirror of Literature, Amusement, and Instruction Volume 17, No. 490, May 21, 1831 When he could look down to the knoll where the hydrometer stood, he saw that it was not yet afire, but that the flames were working that way faster even than he had feared. The Lookout Man The specific gravity should be taken with an hydrometer that gives the specific gravity directly, or, if preferred, the 2 c.c. of acid may be weighed. Nitro-Explosives: A Practical Treatise The graduation of hydrometers is not made to any uniform system. A Text-book of Assaying: For the Use of Those Connected with Mines. In making tests with the hydrometer, the electrolyte should always be returned to the same cell from which it was drawn. The Automobile Storage Battery Its Care And Repair Hence the marine aquarium must be replenished with fresh water, until the proper specific gravity, as indicated by the hydrometer, is restored. The Atlantic Monthly, Volume 08, No. 47, September, 1861 I saw you down there by the hydrometer, all by yourself. The Lookout Man He took up an electrometer, a hydrometer, a compass, a thermometer, and a Toricelli barometer, together with bottles of water, in order to collect samples of the air at different heights. A History of Aeronautics The method of determining sp. g. with the hydrometer is obviously inapplicable to the case of solids, and in the case of liquids it should not be used where exact figures are required. A Text-book of Assaying: For the Use of Those Connected with Mines. When a sufficient amount of electrolyte has entered the tube, the hydrometer will float. The Automobile Storage Battery Its Care And Repair Every battery attendant should be provided with a hydrometer and a voltmeter. The Project Gutenberg Encyclopedia Volume 1 of 28 And every day at a certain time, I can come up here where that hydrometer thing was before it burned, and signal to you. The Lookout Man To assist in determining the correct proportion of sugar to use in the making of jelly, the hydrometer, or sirup gauge, which is explained in Canning and Drying, will be found helpful. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals A.--By means of the salinometer, which is an instrument for determining the density of the water, constructed on the principle of the hydrometer for telling the strength of spirits. A Catechism of the Steam Engine Care should be taken not to spill the electrolyte from the hydrometer syringe when testing the gravity. The Automobile Storage Battery Its Care And Repair Don't fail to recharge your storage battery when the hydrometer shows that the specific gravity of the electrolyte is close to 1.225. The Radio Amateur's Hand Book All hydrometers were at fault; some trembled for their English even. A Week on the Concord and Merrimack Rivers Allow the sugar to dissolve completely, pour a little of the mixture into a glass or a graduate, and insert the hydrometer, as shown in Fig. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals Bless my hydrometer, but he's got nerve for a first trip in a submarine! Tom Swift and His Undersea Search, or, the Treasure on the Floor of the Atlantic For determining the specific gravity, a hydrometer is used. The Automobile Storage Battery Its Care And Repair Don't keep charging the battery after the hydrometer shows that the specific gravity is 1.285. The Radio Amateur's Hand Book Each of these has a pocket in one of its walls in which a ball operates as a hydrometer or battery gauge. The Automobile Storage Battery Its Care And Repair It must not be understood that a hydrometer is an actual necessity in the making of jelly, for very good jelly can be made without measuring the ingredients in this manner. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals If the specific gravity is below or above these figures, draw off as much electrolyte as you can with the hydrometer. The Automobile Storage Battery Its Care And Repair If this hydrometer is placed in a liquid, it will sink to a certain depth. The Automobile Storage Battery Its Care And Repair It indicates the strength and is measured by the hydrometer. The Automobile Storage Battery Its Care And Repair A glass barrel enclosing a hydrometer and provided with a rubber bulb for drawing up electrolyte. The Automobile Storage Battery Its Care And Repair However, if a hydrometer is not used, it will be necessary to apply the best judgment possible to the rules given for the proportion of ingredients used in jelly making. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals If the manufacturer-of the battery furnishes a special hydrometer which is marked "Full," "Half-Full," "Empty," or in some similar manner, this hydrometer may, of course, be used. The Automobile Storage Battery Its Care And Repair Thus if the hydrometer sinks in the electrolyte until the electrolyte comes up to the 1.150 mark on the stem, the specific gravity is 1.150. The Automobile Storage Battery Its Care And Repair Temperature corrections should be made in taking hydrometer readings, as described on page 65. The Automobile Storage Battery Its Care And Repair This is another reason why hydrometer readings should be used as a guide. The Automobile Storage Battery Its Care And Repair For determining the density of sirup, a sirup gauge, or hydrometer, will be found useful. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals When the hydrometer test shows the bottom of the red band in the electrolyte, the battery, whether in glass or rubber jar, is discharged. The Automobile Storage Battery Its Care And Repair In so doing, it will displace a certain volume of the electrolyte, and when it comes to rest, the volume displaced will just be equal to the weight of the hydrometer. The Automobile Storage Battery Its Care And Repair The charge should then be continued for at least one hour to thoroughly mix the electrolyte before taking another hydrometer reading. The Automobile Storage Battery Its Care And Repair As for the hydrometer, thermometer, etc., which were listed on page 96 as essential accessories of a charging bench, the Exide vehicle type hydrometer is a most excellent one for general use. The Automobile Storage Battery Its Care And Repair The graduations, or marks, on the tube, or top part, of the hydrometer serve to indicate the percentage of solid matter dissolved in a solution and register from to 50 degrees. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals The test must be made in conjunction with hydrometer readings, as otherwise it might give false indications itself. The Automobile Storage Battery Its Care And Repair The rubber tubing on the hydrometer should not be withdrawn from the cell. The Automobile Storage Battery Its Care And Repair This is a condition in which the hydrometer readings would indicate that a battery is almost or fully-charged, but the battery may fail to operate the starting motor. The Automobile Storage Battery Its Care And Repair This hydrometer has a round bulb and a straight barrel which has projections on the float to keep the hydrometer in an upright position when taking gravity readings. The Automobile Storage Battery Its Care And Repair To use such a gauge, partly fill a glass cylinder--an ordinary drinking glass will do--with the sirup and place the hydrometer in it. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals This is convenient for holding water bottle, acid pitcher, hydrometer. The Automobile Storage Battery Its Care And Repair In taking a reading, there should be no pressure on the bulb, and the hydrometer should be floating freely and not touching the walls of the tube. The Automobile Storage Battery Its Care And Repair If this is done, the elevated shelf should also be installed, as it is a great convenience for the hydrometer, voltmeter, and so on, as already described. The Automobile Storage Battery Its Care And Repair Some adjustment may then have to be made by drawing off some of the electrolyte with a hydrometer and adding water to lower the gravity, or 1.400 acid to bring it up. The Automobile Storage Battery Its Care And Repair The greater the amount of solid matter dissolved in the sirup, the higher will be hydrometer float. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals If a fairly new battery will not take a full charge, as indicated by hydrometer readings and cadmium tests, some trouble has developed due to neglect, abuse, or defect in manufacture. The Automobile Storage Battery Its Care And Repair The tube must not be so full of electrolyte that the upper end of the hydrometer strikes any part of the bulb. The Automobile Storage Battery Its Care And Repair If it is not within these limits, adjust it by withdrawing some electrolyte with the hydrometer and adding water if the gravity is high, or 1.400 electrolyte if the gravity is low. The Automobile Storage Battery Its Care And Repair On such occasions hydrometer readings should be taken and water added, if necessary, to bring the surface of the electrolyte up to the proper level. The Automobile Storage Battery Its Care And Repair Regardless of the kind of juice, the hydrometer should register 25 degrees for perfect jelly. Woman's Institute Library of Cookery Volume 5: Fruit and Fruit Desserts; Canning and Drying; Jelly Making, Preserving and Pickling; Confections; Beverages; the Planning of Meals Next measure the specific gravity of the electrolyte of each cell with the hydrometer, and then add water to bring the electrolyte up to the correct level, if this is necessary. The Automobile Storage Battery Its Care And Repair For this purpose in automobile batteries, a hydrometer is placed in a glass syringe having a short length of rubber tubing at one end, and a large rubber bulb at the other. The Automobile Storage Battery Its Care And Repair Note. also that the shelves are spaced two feet apart so as to be able to take hydrometer readings, voltage readings, add water, and so on, without removing the batteries from the racks. The Automobile Storage Battery Its Care And Repair The standard hydrometer for service men is known as the Type V-2B. The Automobile Storage Battery Its Care And Repair A special type hydrometer showing three colored bands in place of numbers has been designed for users. The Automobile Storage Battery Its Care And Repair It is, in fact, a good plan, and one which will lengthen the life of the battery, to charge a battery when it is only about three fourths discharged, as indicated by the hydrometer. The Automobile Storage Battery Its Care And Repair The hydrometer readings will show whether the generator is keeping the battery charged, and if a change in the charging rate is necessary, the necessary adjustments may be made. The Automobile Storage Battery Its Care And Repair |
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