Abstract: An exhaust monitoring sensor, such as an oxygen sensor, is used in an engine equipped with an exhaust system including first and second parallel pipes. The first and second pipes form respectively first and second exhaust passages through which exhaust gases can flow. A portion of the walls of the first pipe is common to a portion of the walls of the second pipe to form a partition wall separating the first and second exhaust passages. The partition wall has a hole extending therethrough. The sensor includes an exhaust-gas sampling tube extending from the first to the second exhaust passage through the hole. The tube has a bore, and first, second, and third openings. The bore communicates with the second exhaust passage via the second and third openings. The bore communicates with the first exhaust passage via the first opening. The sensor also includes an exhaust sensing section. At least part of the sensing section is located in the bore of the tube.

Abstract: A measurement system is provided in which a work-engaging transducer is connected by means of a cable to a remotely located display unit which is adapted to provide quasi-analog and/or digital display of measurement made by the transducer. The transducer includes an oscillator the output of which is a function of a measurement being made. The display unit presents the measurement made in quasi-analog and/or digital form either in a conventional format such as a circular dial face, in linear form such as a column 82 or in other selected formats of various geometrical configurations and/or in various mathematical progressions to suit particular applications.