This measurement chain consists of the CON021 converter and the PR6424 series displacement sensor. Unlike the smaller 8mm probes, the PR6424 is designed for applications requiring a larger measuring range or increased standoff distance, typically used in large steam turbines or hydro-generators for monitoring shaft eccentricity and thrust position.
Component 1: CON021/913-040 Signal Converter
TheCON021acts as the electronic driver for the eddy current probe. It generates the high-frequency carrier signal and converts the probe's impedance changes into a readable analog voltage.
Model:CON021/913-040
Signal Conditioning:Converts physical displacement into a linear voltage signal.
Output Range:Typically standardized to a$0$to$-20$VDC or$2$to$10$VDC range.
System Calibration:Calibrated for a specific total cable length (integral probe cable + extension cable), usually 5m or 10m.
Component 2: PR6424/000-000 Displacement Sensor
ThePR6424is a heavy-duty, non-contacting sensor with a larger tip diameter (typically 12mm or more) compared to the standard PR6423.
Model:PR6424/000-000
Measuring Range:Typically up to4.0 mm(Double the range of standard 8mm probes).
Connector Type:The "000-000" suffix often indicates a standard configuration without integral cable extensions or specialized armored conduits.
Application:Ideal for measuring large axial movements (thrust) or where the sensor must be mounted further back from the target surface.
Environmental Resistance:Hermetically sealed tip, resistant to hot oil, pressurized lubricants, and steam.
Key Performance Characteristics
Extended Linear Range:The PR6424 provides a wider linear window, which is critical for machines with significant thermal expansion.
High Sensitivity:Despite the larger range, the system maintains high sensitivity
Machine Protection:Often integrated into the MMS 6000 or MMS 3000 racks to provide automatic machine trip functionality during high-vibration events.
