If you really want to significantly reduce your repair outage time, our Concentricity Alignment Tool (CAT) is exactly what you need. Often referred to as an Electronic Radial Alignment Gauge (ERAG), we are the exclusive manufacturer of these tools.
Our ERAG Features
Does away with tightwire and/or laser alignment
Directly measures the amount of diaphragm misalignment with the rotor in place
Factory and field-tested method of diaphragm alignment since 1992
Alignment method proven thru thousands of hours of use
Depending on the turbine, adjustments can be made and final measurements taken, without having to remove the rotor
Cost effective — often pays for itself in one outage
Easy to use — direct numeric readout
Accommodates a wide range of turbine sizes
Very accurate (resolution to 0.0001 inch, accuracy of ±0.001 inch maximum)
Durable — units rarely require maintenance even after years of service
Parts are readily obtained from the factory and are usually field replaceable
Inserted into the empty packing groove, the Concentricity Alignment Tool (CAT) allows annular space variations to be displayed on a LCD display as it is pulled through the packing groove as shown. The head “rub bars” ride on the turbine shaft and the head lever arm rides on the ID of the diaphragm. As the head is pulled through the packing groove, the lever arm follows the contour of the diaphragm ID and the dimensional variation is displayed. See the complete operating instructions and specifications on the CAT along with other EDS products under the “Turbine Tools” heading.
In the United States, COVID-19 coronavirus cases sharply increased during the start of 2022, but have dropped to manageable levels. Nonetheless, our facilities are fully operational. We have excellent containment procedures in place and do not have any reported infections nor symptoms. Our staff was tested most recently in December 2021 and there were no infections detected, and was fully vaccinated in May 2021 and December 2021. [Updated as of 2022-Jan-3.]
We have discontinued our procedure of quarantining equipment sent for repairs as there is little risk of transmission on surfaces. We will notify any customers receiving shipments from us if any infections occur on our premises.
While our SCAT and LCAT measuring heads can be used with a wide range of turbine brush-seal grooves, the latest µCAT ("mu-CAT" or "micro CAT") fits where the others can't. The latest turbines for power generation being developed include stages with very small radial clearance. The µCAT can fit in the same width slot as the SCAT (0.500") and measure radial clearances from 0.200" to 0.250".
We have replaced this model with one that fits brush-seal grooves as narrow as 0.300". Look for an update soon.
Please contact us for information about purchase or rental of this new tool.