Industrial piezo-electric accelerometer A/53/F, A/53/F/HT 12pC/g, 300°C max (/F) • 1.7pC/g, 400°C max (/F/HT) • 20gm wt. (ex cable) • isolated output • hermetic, integral hardline cable • Intrinsic version available on request (EEx ia IIC T3) close tolerance output temperature calibration to 400°C (/HT) proof pressure testing to 100bar cable/connector options are shown in Fig .1 Intrinsic version EEx ia IIC T3 perm. temp. radius radius 9 mm 4.5 mm perm. temp. radius radius 15 mm 7.5 mm 1.5mm M.I. cable/pot seal with flying leads x 15cm long TEMPERATURE RESPONSE TEMPERATURE RESPONSE Charge sensitivity pC/g Capacitance pF (ex cable) Resonant frequency kHz Cross axis error % max Temperature range °C Charge sensitivity deviation re 20°C Pyro-electric output, g/°C Pyro-electric corner freq. Hz Base strain sens. g/µ strain Max continuous accn. g sine Case material Mounting Weight gm Case seal 1000 s/steel inconel 303 S31 2 x 5.2mm ø holes @ 24.4mm ctrs 20 welded, hermetic CONVERSION MODE iniature, rugged, industrial grade accelerometer with integral hardline cable, suitable for long term vibration monitoring in adverse environments. These transducers are hermetic and are proof up to 100bar fluid pressure @ 20°C. Isolated signal minimises ground loop interference, however the 2 core cable termination option, being unguarded viz à viz spurious ground loop induced voltage, may need a differential charge amplifier interface. The alternative triaxial cable guards signal transmission external to the accelerometer. Choice of cable is somewhat subjective and involves physical and cost tradeoffs. High temperature operation (A/53/F/HT) is accompanied by significant reduction in insulation resistance and by increased low frequency pyro-electric noise content. This may impose a minimum frequency constraint. A/53’s have seen extensive long term service in a variety of hostile environments. We recommend thermal burn-in and proof pressure tests where appropriate. KONIC sensing element, all welded construction, and welded cable termination maximises measurement integrity and reliability.