4-131 Applications • Industrial Turbines • Turbine-Driven Machinery • Power Generators • Gas Pumping Systems Features • Friction-free design for long life • Self-generated, high level, low impedance output • Operates to +700°F (+900°F versions are available) Description The friction-free moving elements in CEC’s 4-131 Vibration Transducers assure long life and reliability. Designed for industrial applications on fixed turbines, you can use this instrument in turbine hot sections where high temperatures cause problems with other transducers. The system is simplified due to the low impedence, high level output that can drive AC meters, recorders, and control electronics without using special amplifiers. The frictionless design also allows measurement of extremely low vibration levels, critical when monitoring precision balanced turbine systems. The low level is limited only by system noise. These transducers use a seismic mass magnet suspended by springs and a coil attached to the case. The output signal results from relative movement between the magnet and coil when the case vibrates. The air damped system operates above its natural frequency, so the output signal is proportional to velocity. The sealed case prevents damage to the instrument when used in difficult environments. CEC Vibration Products • 746 Arrow Grand Circle • Covina, California 91722 • USA (626) 938-0200 • (800) 468-1345 • Fax: (626) 938-0202 www.cecvp.com ISO 9001:2000 AS9100 Certified Velocity Sensors Vibration Transducer

4-131 Vibration Transducer Performance Specifications Table 1 (refer to table 1) mV/in/sec ±3% at 80 Hz and +77°F (+25°C) ±4°F at 0.5 in/sec (ips), load impedance is 10,000 Ω ±2% Dynamic Range Part Number Sensitivity Max Temp 4-131-0001 135 mV +700°F (+371°C) 4-131-0103 150 mV +700°F (+371°C) 4-131-0107 Sensitivity: 145 mV +700°F (+371°C) Frequency: 15 Hz to 2000 Hz 4-131-0116 200 mV +700°F (+371°C) Amplitude: 0.07 inch peak-to-peak, maximum 4-131-0123 135 mV +900°F (+482°C) Acceleration: 0.2 g to 50 g Acceleration Threshold: 0.01 g peak Linearity: ±6% along straight line between 0.1 & 1.0 ips...