Gas Turbine Combustion Instability Transducers - Bently Nevada

Gas Turbine Combustion Instability Transducers Brand : Bently Nevada Gas Turbine Combustion Transducers The Bently Nevada 3500/ 64M Dynamic Pressure Monitor is specifically designed to monitor combustor pressure pulsations indicative of combustion instabilities ( " humming" ) in gas turbines. Through the use of our 350500 interface module, a variety of pressure transducers* designed for these applications can be used with the 3500/ 64M. Electrical Specifications Power : + Supply Voltage ( at the module) : - 19.60 Vdc to – 26 Vdc when no safety barriers are used -17.75 Vdc to – 26 Vdc when safety barriers are used. + Supply Current : 14.68 mA maximum with no load11.69 mA typical with no load Signal: Input Sensitivity Ordered option: - 13.8 pC/ psi ( 200 pC/ bar) - 16 pC/ psi ( 232 pC/ bar) - 1200 pC/ psi ( 17, 404 pC/ bar) - 12 pC/ psi ( 174 pC/ bar) - 60 pC/ psi ( 870 pC/ bar) + Expected Sensor Pole-to-Pole Capacitance for different : Input Sensitivities Input Sensitivity Option in pC/ psi: - 13.8 - 16 - 1200 - 12 - 60 Nominal Pole-Pole Capacitance in picofarads: - 320 - 60 to 90 - 6, 300 - 100 - 300 Output Sensitivity Ordered option: 100 millivolt/ psi ( 1.45 Volt/ bar) ± 2% @ 150 Hz + Dynamic Range : ± 50 psi pk + Common Mode Rejection : -40 dB or better in the passband. + Output Resistance Frequency Response : 50 ohm typical Ordered option: High Low ( See Figure 1)