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Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers to +650°C

Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers to +650°C
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Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers to +650°C - 1

Endevco Model 6237 M70/M71 Piezoelectric accelerometer Features Description +1200°F [+650°C] opթration Intթgral hardline cable Single bolt mount Օ Ground isolated Gas turbine testing The Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers are designed specifically for use in extremely high temperature environments such as aircraft and ground-based gas turbines. These accelerometers are designed for continuous operation at +1200°F (+650°C) with long Mean Time Between Failure (MTBF). The small size and light weight of these accelerometers permit installation in cramped locations with minimal structural support. The accelerometer is a self-generating device that requires no external power source for operation. Models 6237M70/M71 incorporate Endevco's Piezite® type P-15 crystal in a shear design. The 6237M70 and 6237M71 differ in their internal design and in the direction of the sensitive axis. The 6237M70 has its sensitive axis located in line with the mounting screw, while the 6237M71 is oriented perpendicular, or transverse, to the mounting screw. The sensing elements and integral shield are isolated from the case. These accelerometers feature an integral hardline cable with a standard length of 120 inches (3.05 meters). Other cable lengths are also available on special order Sensitive axis Endevco signal conditioner model 2721B is recommended for use with this high impedance accelerometer. TYPICAL AMPLITUDE RESPONSE 20 o lu q l -- ՗ - - - __ 15 10 FREQUENCY IN HERTZ TYPICAL TEMPERATURE RESPONSE O 20 -10 -30 -100 (-73) (149) (371) TEMPERATURE oF (oC) 1100 (593) MEGGiTT smart engineering for extrתme environments

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Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers to +650°C - 2

Model 6237 M70/M71 Piezoelectric accelerometer Endevco Spcifications The fohowing performance spcifications conform to ISA-RP-37.2 (1964) and are typical values, referenced at +75°F (+24°C), 100 Hz and 10 Vdc unLess otherwise noted, CaLibration data, traceabLe to National Institute of Standards and Technology (NIST), is suppLied, Dynamic characteristics Charge sensitivity, ±5% Frequency response [1] Resonance frequency Amplitude response [2] ±5% ±1 dB Temperature response [3] +600°F (+315°C) max/min +1000°F (+537°C) max/min +1200°F (+650°C) max/min Transverse sensitivity Amplitude linearity...

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Endevco® model 6237M70 and 6237M71 piezoelectric accelerometers to +650°C - 3

Model 6237 M70/M71 FnHpvrn Piezoelectric accelerometer ftccessories Predutt De*crplion i237M7tl/M71 [ tH*71 MovnUnf acre*. 10-31 KTA n. IjT pt inctidee Wf XXX Cabe> entama!** "-XXT Inutat table l**謹h n « kit 7;'b Notes: T Frequerxy rft^w ttcontroltad b/he fetonence Ch»ract*nirx« ot the tr»r**duter EtUttatag calibration erwa ﮨre * I 5% to 900 Hz«Ad 75% trom 900 H* lo 5000 Ht 2. Lovnend nwecnae ol the iranaducer * luncttcn ol a» eieodated 3 Spunouan^ tr*ov*ocy d<achenje may be ethibried by Ihn dente lor *ev*ral mnuleaafter *xpo*<xe lo tempթrature trans#jr*s oreeter then + 100*Fl*38*C|per...

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