Automatic gas measurement and analysis for a test cell
First Claim
Patent Images
1. Apparatus for measuring gas production in a test cell, comprising:
- a. means for sampling gas located within said test cell;
b. conduit means connected to receive the gas output of said gas sampling means;
c. means connected to said conduit means for detecting the pressure in said test cell and for producing an electrical output signal in response to the detected test cell pressure;
d. valve means connected to said conduit means and responsive to said electrical output signal for venting said gas output when said detected test cell pressure exceeds a predetermined value;
e. means for measuring the rate of mass flow of said gas output when said valve means vents said gas output; and
f. means connected to receive the output from said mass flow measuring means for accumulating and storing the rate of mass flow measured.
0 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for automatic measurement of gas flow rate and gas volume from a test cell. By this method, low rates of gas production may be measured, and means are provided to limit flow rates to maximum and minimum values measurable in a mass flowmeter. Further, data logging and computational means are shown which are used for correction and manipulation of mass flow rate data obtained.
26 Citations
10 Claims
-
1. Apparatus for measuring gas production in a test cell, comprising:
-
a. means for sampling gas located within said test cell; b. conduit means connected to receive the gas output of said gas sampling means; c. means connected to said conduit means for detecting the pressure in said test cell and for producing an electrical output signal in response to the detected test cell pressure; d. valve means connected to said conduit means and responsive to said electrical output signal for venting said gas output when said detected test cell pressure exceeds a predetermined value; e. means for measuring the rate of mass flow of said gas output when said valve means vents said gas output; and f. means connected to receive the output from said mass flow measuring means for accumulating and storing the rate of mass flow measured. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of measuring the rate and quantity of gas flow from a test cell over a period of time, comprising the steps of:
-
a. placing a gas sampling probe within said test cell; b. venting the output gas from said sampling probe when the pressure difference between said test cell and the barometric pressure exceeds a predetermined maximum; c. stopping said venting when the pressure difference between said test cell and the barometric pressure falls below a predetermined minimum; d. measuring the mass flow during the time when said gas is vented; and e. accumulating the mass flow measurements for further data manipulation. - View Dependent Claims (10)
-
Specification