PR9670/113-100 | Emerson Epro | Eddy Current Sensor

Configured for rotational displacement acquisition in MMS machinery monitoring platforms, the Emerson Epro PR9670/113-100 (PR9670/113-100) Eddy Current Sensor provides direct physical execution of non-contact shaft position and vibration sensing.

Hardware Specifications

Mechanical Monitoring and TSI Characteristics

The PR9670/113-100 utilizes a ferromagnetic core to generate a concentrated electromagnetic field, allowing for high-resolution displacement tracking of rotating shafts. During installation, perform precise eddy-current probe scaling to align the sensor output with the specific shaft material and geometry. Maintain gap voltage validation against -10 VDC targets to ensure operation within the linear range of the probe's characteristic curve. The internal high-frequency excitation architecture provides effective cross-talk suppression, enabling high-density mounting configurations—such as those required in multi-point monitoring arrays—without signal distortion or inter-probe interference.

Frequently Asked Questions

Q: How does the shielded cable affect signal integrity in high-noise environments?

A: The integral shielded cable is designed to provide high noise immunity by minimizing electromagnetic interference coupling into the velocity or displacement signal path. Ensure the shield is properly terminated at the monitoring system's common ground to maintain this protection.

Q: Is the stainless steel housing suitable for chemically aggressive environments?

A: The stainless steel construction provides mechanical and chemical resistance against typical industrial environmental factors such as humidity and dust. However, ensure the cable entry point is correctly sealed if the sensor is to be deployed in environments with moisture or conductive particulate ingress.

Field Installation Guidelines

1. Secure the sensor rigidly using the housing threads, ensuring the probe tip is perpendicular to the shaft target to prevent geometric measurement errors.
2. Verify the initial air gap using a micrometer or feeler gauge, adjusting until the static gap voltage reaches the nominal -10 VDC target.
3. Route the shielded cable through grounded metallic conduit, avoiding proximity to high-current AC motor drives or power cables to prevent induced noise.
4. If mounting multiple sensors in a tight array, verify that excitation frequencies are decoupled to eliminate cross-talk.
5. Perform a static gap simulation test during commissioning to verify the mapping of the measured vibration parameters to the output current/voltage values of the monitoring system.