• Aircraft Engines
• Industrial Turbines
• Power Generators
• Test Cells

• Self-generated, high-level, low impedance output
• Operates up to +500°F (+260°C)
• Weighs only 4.25 ounces

The CEC 4-123-0001 Vibration Transducers are designed for turbine applications, capable of operating at temperatures up to +500°F. They exhibit low sensitivity to transverse accelerations and can be mounted in any orientation. The transducers provide a high-level output that does not require special amplifiers, simplifying measurement systems. Precision jewel bearings ensure nearly friction-free movement, enhancing reliability.

The transducer uses a seismic mass on a special bearing mechanism. A coil attached to the case generates an output signal through movement between the magnet and coil when the case vibrates. This air-damped system operates above its natural frequency, with the AC mV output proportional to velocity. The sealed case protects against contamination.

• Sensitivity: 135 ±2 mV/in/sec at 100 Hz, +77°F (+25°C) into a 10,000 Ω resistive load impedance
• Dynamic Range: Frequency 45 Hz to 2000 Hz, Amplitude 0.15 inch peak-to-peak max, Acceleration 0.5 g to 50 g
• Frequency Response: ±8% of the mean sensitivity from 45 to 2000 Hz throughout the operating temperature range
• Transverse Response: Less than 2%
• Linearity: ±3% within dynamic range
• Temperature Range: -40°F to +500°F (-40°C to +260°C)
• Thermal Coefficient of Sensitivity: ±0.03%/°F
• Sensitivity Shift with Position: ±6% of the mean sensitivity between vertical and horizontal
• Damped Resonant Frequency: 18 Hz
• Excitation: Self-generating
• Coil Resistance: 435 ohms ±15% at 77°F
• Insulation Resistance: 1 meg ohm, minimum
• Polarity: Pin 1 is positive when the case is moved upward
• Maximum Static Acceleration: 6 g’s in sensitive axis produces full travel of moving mass
• Shock: 50 g’s maximum in any direction
• Weight: 4.5 oz nominal (121 grams)

• Cable and connector assembly P/N 169500-XXXX
• Connector P/N 173960

Specify 4-123-0001 when ordering. Mating connectors and cable assemblies are not included and must be ordered separately. Specifications may change without notice as part of CEC’s policy of continuous product improvement.