3015 Series

Product Description

The 3015 series eddy current sensors utilize the eddy current principle to deliver non-contact monitoring of shaft vibration, axial displacement 

and speed in rotating machinery. The proximity driver supplies a high-frequency excitation signal to the probe, creating a high-frequency 

alternating electromagnetic field at the probe tip.Eddy currents and opposing magnetic fields are induced on the target metal shaft surface, 

and changes in shaft gap cause variations in the probe coil equivalent impedance. The proximity driver converts this impedance change into 

a standard voltage signal, where the dynamic component reflects shaft vibration conditions and the static component corresponds to average 

gap, delivering high-precision non-contact monitoring for continuous online monitoring of critical rotating equipment. The 3015 eddy current 

probes are specifically designed for environments with limited space around the probe mounting location.

The system consists of probe, extension cable and proximity driver, capable of simultaneous dynamic and static measurements. It is primarily 

used for monitoring radial shaft vibration, axial displacement, keyphaser and speed in rotating machinery. The system continuously monitors 

rotor operating conditions, identifies fault characteristics such as imbalance, eccentricity, bearing wear and shaft cracks, and provides critical 

data for early fault diagnosis.

Key Specifications

Electrical Specifications

• Supply Voltage: -18 VDC to -30 VDC

• Probe Tip Diameter: 5.4 mm

• Sensitivity: 7.87 mV/μm (200 mV/mil)

• Linear Range: 0.35 mm to 2.35 mm

• Frequency Response: 0 to 10 kHz (±3 dB)

• Environmental Specifications

• Operating Temperature：

• Probe: -50 °C to +160 °C

• Extension Cable: -50 °C to +160 °C

• Proximity Driver: -40 °C to +85 °C      

Storage Temperature：                                                                                                                                                                    

• Probe: -50 °C to +160 °C

• Extension Cable: -50 °C to +160 °C                                                                                                                                                               

• Proximity Driver: -50 °C to +100 °C

Operating Humidity：

• Probe & Cable: 100% RH condensing; not submersible (connectors must be sealed)

• Proximity Driver: 5% to 95% RH, non-condensing

Hazardous Area Approvals:

• ATEX: 

             II 1G, Ex ia IIC T4 Ga

             II 2D, Ex ib IIIC T105 °C Db

                 （-40 °C to +85 °C）

• CNEx:       

        Ex ia IIC T6 Ga

        Ex ib IIIC T80 °C Db

• CSA/NRTL/C:

               Ex ia IIC T4/T5

              Class I Zone 0 / Class I Division 1

              Groups A, B, C