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Aviation History
1952
1952 - 0431.PDF
15 FEBRUARY 1952 FLIGHT 25 175 PRESSURE GAUGE MEASUREMENT OF OIL AND FUEL PRESSURES Developed in conjunction with the British Engine Manufacturers, the Trans mitter of this new electrical pressure measuring system is designed for direct flange mounting on the engine and is entirely unaffected by vibration, as there are no moving contacts. Indicators may be of the single long scale type or twin scale, and calibrated 0-40, 0-60,orO-150 p.s.i. for the oil pressure range and 0-75 p.s.i.for fuel pressures. The equipment requires a power supply of 26 volts 400 cycles and a miniature transformer is available so that the system may be used on the standard 115 volt aircraft supply. The power input to the Transformer is 10 VA at -5 Power Factor when the circuit contains a single Inductor Pressure Indicator. Approved by the Air Registration Board and adopted by many British Con structors for Military and Civil Aircraft. Range*: 0-40 p.s.i. 0-60 p.s.i. 0-150 p.s.i. 0-75 p.».i. (differential) 4 Holes •281 in. dia. (7M43 m/m) equispaced as shown on P.C.D. 2-178 in. (55-323 m/m) 2-173 in. (55-196 m/m) Single Indicator in2f in. S.A.E.case Double Indicator in 3i in. S.A.E. case. SMITHS AIRCRAFT INSTRUMENTS LIMITED The Aviation Division of S. Smith & Sons (England) Ltd. Cricklewood Works, London, NW2 Sole Sales Concessionaires for Kelvin and Hughes (Aviation) Limited • Barkingside and Bas/ngstoke
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