COMBINED DEPTH GAUGE

Abstract

Combining several capillary tubes in one depth gauge, which measure the depth in different ranges, will allow obtaining a measuring scale close to linear and eliminate the main disadvantage of a capillary depth gauge.

Claims

1. A device for measuring depth, comprising a housing with a scale and a measuring element located in the housing along its circumference, characterized in that in order to increase the accuracy of measuring the depth of immersion, the measuring element is made in the form of several capillary channels/tubes/connected at one end to external environment and stoppered on other end, each of which is designed to measure a given range of depths, while the first channel (tube) has two chambers, measuring and absorbing, and all subsequent channels have three chambers, two absorbing and one measuring. The length (volume) of each of the capillary channels (tubes) is calculated based on the required length of the measuring chambers of these tubes.

Description

GENERAL DESCRIPTION OF THE DRAWING

[0014] FIG. 1—Illustration for Boyle's Law and Capillary Depth Gauge

[0015] FIG. 2—Scale of capillary depth gauges.

[0016] FIG. 3—Scheme of combined device with two capillary tubes.

[0017] FIG. 4—Combined depth gauge with two tubes. Main View.

[0018] FIG. 5—The housing 1 of measuring chambers A and D.

[0019] FIG. 6—The flat plate 3 with holes 6,7,8.

[0020] FIG. 7—The housing 2 with absorbing chambers B, C and E.

DESCRIPTION OF THE INVENTION.

[0021] The device for measuring the depth of immersion (FIG. 4) consists of a housing of measuring chambers 1 made of transparent plastic in the form of a round washer with c measuring chambers A and D (FIG. 5), a flat plate 3 with holes 6,7,8 (FIG. 6) and the housing 2 with chambers s B, C and E. (FIG. 7).

[0022] Chamber A through the hole 4 and chamber C through the hole 5 are connected to the external environment.

[0023] The housings 1 and 2, tightly connected together, with a plate 3 located between them, form the volumes of two gauge's tubes 0-30 and 30-60 with chambers A, B, C, D and E, which are connected to each other by holes 6,7,8 in the plate 3. On the surface of the measuring housing 1, a scale is applied to read the readings of the device in channels A and D.

[0024] A scale with divisions and inscriptions is applied or glued into the recess on the surface of the transparent case 1

[0025] Housings 1,2 and plate 3 can be made of plastic by injection molding, which allows for mass production of parts.

[0026] When the device is immersed in water, through the hole 4 it begins to fill the measuring chamber A of the pressure tube 0-30 and through the hole 5 in the housing 2 the filling absorbing chamber C of the pressure tube 30-60. Depth readings are read from the meniscus in measuring chamber A. After immersion to a depth of more than 30 meters, water from chamber A of the pressure gauge 0-30 through the hole 6 in the plate 3 goes into the absorbing chamber B and through the hole 7 begins to flow into the measuring chamber D of the second pressure gauge 30-60 and the position of the meniscus in this chamber allows you to fix the depth of immersion from 30 to 60 meters. The position of the water in the pressure gauges 0-30 and 30-60 at a depth of 45 meters is shown in the diagram of FIG. 3. After reaching a depth of more than 60 meters, water from the measuring chamber D through the hole 8 begins to fill the absorbing chamber E.