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Title: Ultrasonic hydrometer. [Specific gravity of electrolyte]

Abstract

The disclosed ultrasonic hydrometer determines the specific gravity (density) of the electrolyte of a wet battery, such as a lead-acid battery. The hydrometer utilizes a transducer that when excited emits an ultrasonic impulse that traverses through the electrolyte back and forth between spaced sonic surfaces. The transducer detects the returning impulse, and means measures the time t between the initial and returning impulses. Considering the distance d between the spaced sonic surfaces and the measured time t, the sonic velocity V is calculated with the equation V = 2d/t. The hydrometer also utilizes a thermocouple to measure the electrolyte temperature. A hydrometer database correlates three variable parameters including sonic velocity in and temperature and specific gravity of the electrolyte, for temperature values between 0 and 40/sup 0/C and for specific gravity values between 1.05 and 1.30. Upon knowing two parameters (the calculated sonic velocity and the measured temperature), the third parameter (specific gravity) can be uniquely found in the database. The hydrometer utilizes a microprocessor for data storage and manipulation.

Inventors:
Publication Date:
OSTI Identifier:
6590189
Alternate Identifier(s):
OSTI ID: 6590189; Legacy ID: DE83006858
Application Number:
ON: DE83006858
Assignee:
ERA-08-017983; EDB-83-049886
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; ELECTROLYTES; DENSITY; LEAD-ACID BATTERIES; MONITORING; MICROPROCESSORS; TEMPERATURE MONITORING; THERMOCOUPLES; ULTRASONIC WAVES; VELOCITY; COMPUTERS; ELECTRIC BATTERIES; ELECTROCHEMICAL CELLS; ELECTRONIC CIRCUITS; MEASURING INSTRUMENTS; MICROELECTRONIC CIRCUITS; PHYSICAL PROPERTIES; SOUND WAVES 250903* -- Energy Storage-- Batteries-- Materials, Components, & Auxiliaries

Citation Formats

Swoboda, C.A. Ultrasonic hydrometer. [Specific gravity of electrolyte]. United States: N. p., 1982. Web.
Swoboda, C.A. Ultrasonic hydrometer. [Specific gravity of electrolyte]. United States.
Swoboda, C.A. Tue . "Ultrasonic hydrometer. [Specific gravity of electrolyte]". United States. doi:.
@article{osti_6590189,
title = {Ultrasonic hydrometer. [Specific gravity of electrolyte]},
author = {Swoboda, C.A.},
abstractNote = {The disclosed ultrasonic hydrometer determines the specific gravity (density) of the electrolyte of a wet battery, such as a lead-acid battery. The hydrometer utilizes a transducer that when excited emits an ultrasonic impulse that traverses through the electrolyte back and forth between spaced sonic surfaces. The transducer detects the returning impulse, and means measures the time t between the initial and returning impulses. Considering the distance d between the spaced sonic surfaces and the measured time t, the sonic velocity V is calculated with the equation V = 2d/t. The hydrometer also utilizes a thermocouple to measure the electrolyte temperature. A hydrometer database correlates three variable parameters including sonic velocity in and temperature and specific gravity of the electrolyte, for temperature values between 0 and 40/sup 0/C and for specific gravity values between 1.05 and 1.30. Upon knowing two parameters (the calculated sonic velocity and the measured temperature), the third parameter (specific gravity) can be uniquely found in the database. The hydrometer utilizes a microprocessor for data storage and manipulation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 09 00:00:00 EST 1982},
month = {Tue Mar 09 00:00:00 EST 1982}
}