Marsh Bellofram Corporation, a member of the Bellofram Group of Companies, has introduced its WESTCON Model 758-9905000, an industrial AC tachometer generator, designed for high-reliability 24/7 jet and diesel engine rotational speed measurements within voltage responsive systems. WESTCON 758 Series AC tachometers are designed to convert rotational shaft speed inputs into linear analog voltage outputs, even in the harshest of environments. Approximate starting torque is 2.0 in-oz, which is maintained at running speeds of up to 1000 RPM. Their rugged construction incorporates a multi-pole cylindrical magnet, which turns within a wound stator. The stator itself is constructed from high-quality transformer iron lamination material. Units are housed within a dustproof aluminum alloy housing and feature an SAE 1/8" type steel mounting with 3/16" solid drive dog. Single phase output current is expressed as a sine wave over the full speed range of the tachometer. Units feature 100 W stators as standard. Two binding posters are available for electrical connection. Custom stator ranges are available upon request.
These rugged AC tachometers offer more than 20 years of successful market pedigree, including the effective support of GE turbofan engines on the McDonnell Douglas F/A-18 Hornet twin-engine combat jet, an application in which the products have successfully performed ongoing, reliable RPM measurements. They have also supported numerous military and off-highway vehicle diesel and gas engine applications, particularly where a standard SAE screw-type tachometer is necessary.