EPRO PR6424/014-120 CON021 | Eddy Current Sensor

EPRO PR6424/014-120 CON021 is a preamplifier/signal converter produced by Emerson Company. It is mainly used for vibration monitoring and displacement measurement, featuring high precision, high reliability, and multiple protection functions. It is widely applied in industrial automation, process control, and critical turbine machinery applications, etc.
Product Overview
Brand and Model: PR6424/014-120
Product Type: Pre-amplifier/Signal Converter
Main Functions: Amplify useful signals, improve system signal-to-noise ratio, reduce external interference, achieve impedance conversion and matching, etc. At the same time, it can also be used in conjunction with the PR6422-PR6426 series sensors to form a complete eddy current measurement chain, enabling precise measurement of radial and axial shaft displacement, position, eccentricity, and speed, etc.

Technical Features
High Precision Measurement: Utilizing advanced technology, it can monitor and measure the vibration conditions during operation, providing high-performance sensor statistics.
Multiple Protection Functions: Includes input overload protection, output overcurrent limit protection, and output current long-term short-circuit protection, ensuring the safe and stable operation of the equipment.
High Reliability: Designed for industrial environments to ensure reliability and durability.
Multiple Connection Methods: Connected to sensors via LEMO plugs or screw terminals, providing convenient and flexible connections.
Wide Temperature Range: Operating temperature range is -20℃ to 70℃, suitable for various industrial environments.

Specific model and parameters
Input: Eddy current sensor PR6422/… ~ PR6426/…
Output: Superimpose an alternating voltage signal proportional to the shaft vibration on the direct current voltage. It has open circuit and short circuit protection, as well as reverse protection.
Output voltage linear range: -4…-20V (supply voltage is -24V); maximum output voltage range: -1…-22V.
Reference voltage: -12V (symmetrical measurement range at both ends)
Internal resistance: 100kΩ
Response time: 15μs
Accuracy (all data relative to full scale): Linear error when connecting sensor PR6422 ≤ 1.5%, when connecting sensor PR6423 ≤ 1.0% ≤ 2%, when connecting sensor PR6424 ≤ 1.5% ≤ 2%, when connecting sensor PR6425 ≤ 6.0%, when connecting sensor PR6426 ≤ 1.5% ≤ 2%.
Temperature drift: Zero point 200mV/100K; sensitivity < 2%/100K.
Time drift: Maximum 0.3%
Supply voltage error: < 0.2%/V
Protection level: Complies with Eex ib llC T6/T4.