Opacity Meter - Closed Exhaust:

The Opacity meter’s simple design make it easy to obtain accurate measurements. The unit offered by Taylor Dynamometer utilizes the same control unit as our “Open Exhaust” model and provides an accurate means (± 1%) of detecting and measuring the opacity of smoke emitted by a diesel engine when utilizing a direct capture (closed) exhaust system. The use of an Opacity (Smoke) meter promotes combustion efficiency for fuel economy and ensures compliance with diesel emissions standards set by environmental air quality codes. The complete system consists of a control unit, stack piece (sensor head assembly), various connecting cables, calibration filter and instruction manual.

The Stack Piece (closed exhaust sensor head):

This is a full flow sensor head and requires a closed exhaust system for use. The stack piece, must be mounted so that the lenses are oriented horizontally. The standard inline stack piece is to be mounted using mating flanges, and in best case scenarios, should be placed in a straight segment of exhaust line which allows 5 exhaust diameters prior to the light path, and 3 exhaust diameters following the light path. This method will assure that the concentration of smoke is free from turbulence, which could adversely affect the accuracy of measurements.

The Control Unit:

The control unit is operated by a membrane keypad, which consists of eight tactile feedback push buttons. The display is an alphanumeric LCD, containing 16 characters by two rows. In low light situations, the display can be backlit. The display shows the prompts the operator follows throughout the test sequence(s).

Applications:

The Taylor Dynamometer supplied Smoke Meter can be used on any diesel engine that utilizes and closed exhaust stack of 8 inches. Other sizes are available upon request and approval by the Taylor Dynamometer engineering team.

*Engine Instrumentation Unit required.