BENTLY 3500/44-01-00

Description

Description The 3500/44M Aeroderivitive GT Vibration Monitor is a fourchannel instrument designed for aeroderivative gas turbine applications. It: l Continuously monitors machinery by comparing monitored parameters against configured alarm setpoints to drive alarms l Communicates essential machine information for both operations and maintenance personnel The 3500/44M ‘s Aero GT I/O modules interface to Velomitor sensors and accelerometers through Bently Nevada interface modules. The monitor uses the Prox/Velom I/O to interface to our . Using the 3500 Rack Configuration Software, you can configure the 3500/44M Aeroderivitive GT Vibration Monitor for the following filter options: l Signal Integration l 1X vibration tracking l Band-pass vibration The 3500/44M Aeroderivitive GT Vibration Monitor accepts input from two separate Keyphasor signals, allowing each channel pair to use a different tracking filter. You can configure multimode channels to have up to eight sets of alarm parameters including alert and danger setpoints and alarm time delays. Each set may be configured for a specific machine mode. As the machine changes modes, the monitor can switch to a specific set using contacts on multimode I/O modules or software commands through a communications gateway. Specifications Inputs Signal Accepts 1 to 4 signals from interface modules (part numbers 86517 and 86497), velomitors and accelerometers Power consumption 7.7 watts, typical Input Impedance Aero GT I/O Greater than 95 kΩ (Proximitor and acceleration inputs) Prox/Velom I/O and Multimode Prox/Velom I/O 10 kΩ for Prox/Accel 3.5 MΩ for Velomitor Sensitivity Aeroderivative 3.94 mV/(mm/s) (100mV/ (in/s)) or 5.71 mV/(mm/s) (145mV/ (in/s)) Aeroderivative2 and Multimode Aeroderivative 3.94 mV/(mm/s) (100mV/ (in/s)), 5.71 mV/(mm/s) (145mV/ (in/s)), 10.19 mV/(m/s2) (100 mV/g), 2.55 mV/(m/s2) (25 mV/g) or 1.02 mV/(m/s2) (10 mV/g) Outputs Front Panel LEDs OK LED Indicates when the 3500/44M Aeroderivitive GT Vibration Monitor is operating properly. TX/RX LED Indicates when the 3500/44M Aeroderivitive GT Vibration Monitor is communicating with other modules in the 3500 Rack. Bypass LED Indicates when the 3500/44M Aeroderivitive GT Vibration Monitor is in Bypass Mode. Buffered Transducer Outputs The front of each monitor has one coaxial connector for each channel. Each connector is short-circuit protected. Output Impedance 550 Ω Transducer Power Supply 23 Vdc nominal at 43 mA max Recorder +4 to +20 mA Output is proportional to monitor full-scale. One output is provided for each channel. Monitor operation is unaffected by short circuits on recorder outputs. Voltage Compliance (current output) 0 to +12 Vdc range across load Load resistance is 0 to 600 Ω. Resolution 0.3662 µA per bit ±0.25% error at room temperature ±0.7% error over temperature range Update rate 100 ms or less