The EPRO PR6423 series represents the industry standard for non-contact displacement measurement. The specific model PR6423/002-030-CN is a probe designed for extreme precision, working in tandem with the CON021 signal converter. This measurement chain converts the distance between the probe tip and the metallic shaft surface into a proportional electrical signal, enabling the detection of minute vibrations or axial shifts.
The CON021 acts as the "brain" of the measurement chain. It provides the high-frequency oscillation required by the probe and demodulates the return signal. The output is a standardized voltage (typically -2 to -18V DC) that corresponds linearly to the gap. The combination of the /002-030-CN probe and CON021 ensures that the signal remains stable even over varying cable lengths and environmental temperatures.

Precision is paramount in shaft monitoring. The PR6423/002-030-CN offers a highly linear measurement range, which is critical for calculating the exact position of the shaft within its bearings. The sensitivity is calibrated to match specific shaft materials (typically 42CrMo4), ensuring that the output voltage accurately reflects the physical displacement in micrometers.
The "CN" suffix often indicates compliance with specific regional or hazardous area standards. This probe is designed to operate in explosive atmospheres common in the oil and gas sector. Its rugged design includes a flexible, armored cable that protects the delicate signal wires from mechanical damage and electromagnetic interference (EMI).
Long-term stability is a core feature of the PR6423 series. However, annual verification of the gap and signal sensitivity is recommended. The CON021 converter facilitates easy testing by providing accessible test points, allowing technicians to verify the quiescent voltage (GAP voltage) without interrupting the machine protection system.



