Friday, March 29, 2019

Proximity sensor shaft calibration.

Metrix’s newly announced 9060-SCTS shaft calibration system pairs with the industrial condition monitoring system manufacturer’s Digital Proximity System (DPS) and associated Metrix hardware to enable custom shaft calibration in the field even when shaft material is not known. Available with full support in Britain from Ixthus Instrumentation, the 9060-SCTS (Shaft Calibrator Touch Select) is used to adjust the gap in pre-set micron level increments for calibrating proximity probe systems and thanks to the powerful DPS software, allows the user to change the configuration.

The Metrix DPS combines the performance of a fully API 670 compliant eddy-current proximity measurement system with the flexibility of digital configurability. The field-configurable measurement system for position, radial vibration and speed is well proven where critical plant equipment such as motors, compressors, pumps and other rotating machines or piston based machines need to be closely monitored for optimal reliability. Typical systems for use with the DPS comprise a digital proximity transducer, interfacing cable and a choice of signal conditioner - available as a driver for a machinery protection system or as a transmitter with a 4-20 mA signal to a PLC/DCS or SCADA system.

Together with the latest free-of-charge software version of the Metrix DPS, the 9060-SCTS is used to determine the actual proximity probe system output in mV/mil or mV/μm of a machine shaft or piston rod. Comprising a self-aligning cradle and a precision ‘micrometer head’ that positions the inserted proximity sensor under test in fixed 200 micron or 0.010” increments, the system measures output at these fixed increments and is capable of ‘straight-line’ re-calibration where material properties are not known. In this way the complete DPS system is capable of supporting a multitude of older probe systems, cable lengths, and target materials with just a single device.

The 9060-SCTS is compatible with 5 to 22 mm probe tip diameters and with a special adapter plate works with reverse mount probes. For ease of use, the displacement is adjusted by twisting a gap adjustment ring and feeling for set ‘clicks’ that correspond to the required probe calibration increments. After each increment is completed the DPS software, which has probe characteristics and part number recognition built-in, is manually commanded to record the output value. An adjusting strap allows the mounting adapter to fit on shafts from 25 mm up to 300 mm diameter. The shaft calibrator is manufactured in composite plastic material that does not affect probe sensitivity.

@IxthusInst  #TandM #Metrix

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