Abstract: A method and apparatus for proving an electronic gas meter and the like that includes counting the number of pulses provided by an encoder associated with a bell prover to define a volume of test fluid which is supplied to the meter under test, enalbing the meter to measure the volumetric fluid flow rate and integrating the volumetric flow rate of test fluid measured by the gas meter during the test, and data representing the actual volume of test fluid supplied to the meter under test to determine the percent proof or accuracy of the meter.

Abstract: A microprocessor-controlled gas appliance basically comprising three components: (1) a computer processor with a sensor interface, (2) a valve assembly, and (3) a human interface. The sensor interface is capable of passing the input from a series of sensors through the processor for subsequent use in controlling the operation of a burner valve in the valve assembly. Appropriate sensors are provided for connection to the sensor interface to measure, among other things, flame temperature, gas flow, carbon monoxide, combustibles, occupancy by an individual in the presence of the gas appliance, and gas composition. The valve controls the flow of natural gas through a line from a source of gas to a burner found in the appliance. The valve is controlled through a valve operator that responds to signals obtained from the computer processor via valve interface electronics.

Abstract: An electronic compact gas meter includes a solid state flow sensor for sensing gas flow rate, data acquisition circuits including an analog-to-digital converter coupled to the sensor for controlling same and providing an output indicative of gas flow, and a digital data processor for receiving the gas flow information from the analog-to-digital converter, processing the information and registering the volumetric gas flow reading at the meter and/or transmitting the volume flow information via RF or telephone communication lines to a remote location.

Abstract: A chromosome detector using a scanning microscope system is used to detect the presence of a chromosome spread in a slide specimen and to produce a signal usable by the scanning microscope system to automatically operate the microscope system whereby the detected chromosomes are centered in the field of view, are automatically focused and their location converted to coordinate data which is stored in a memory system whereby the system may be used to re-examine the detected chromosome by the use of the stored X-Y coordinates. The detector performs an amplitude and frequency analysis of a cell find signal produced by a slide scanner in the scanning microscope system and produces, in turn, an output signal representative of a detected chromosome spread and compatible with the scanning microscope control circuit.

Abstract: A scanning automated microscope system is designed as a clinical laboratory instrument which will aid and speed the task of the medical technologist in performing leukocyte differential count and red blood cell morphology studies. The microscope system has automatic stage drive which operates along the x, y, and z axes and an automated cell find system such that the leukocytes on normally prepared Wright stained slides are located automatically along a conventional meander search pattern, the found leukocytes are centered in the field of view, and are focused automatically. These cells can be observed on a color TV monitor and/or through the microscope oculars.