∑ Lightweight, simple rugged design
∑ Uses proven bubbler ultrasonic couplant method
∑ †††Flow rates of† .1 to .2 GPM max
∑ †††Intimate coupling with rough surfaces.
∑ Ease of diameter and transducer change
∑ ††††Transducer change and calibration within minutes
∑ ††††Pipe diameter change within minutes
∑ On board alarm lights and buzzer allow remote operation from ultrasonic instrument
∑ Available as complete system with rotators/jack stands
∑ ††††Raises pipe off rack and rotates it
∑ ††††1200 pound capacity
∑ ††††Adjustable for various rack heights
∑ Able to be used with a variety of off-the-shelf ultrasonic instruments
∑ Able to scan for transverse or longitudinal defects. (Shown in lower photo)
Note the multiple transducers, each with 2 elements, and the "steerable" rear wheels for helix adjustment from 0" to 1" per revolution.
†††††† Innovative Test Systems recently designed and delivered this portable scanner to a major repair shop for gas and steam turbines. The system is tripod mounted. The scanner easily folds up and detaches from the tripod for easy storage or shipment on airplanes to remote sites.
††††† It was designed to test horizontally held turbine disks which were rotated by the customer. There are 3 manually operated axes used to place the transducer in the desired position. Two of them are encoded, one horizontal axis and one lateral axis. A third encoder is† mounted on a tripod or magnetic base and is driven by a friction wheel.
†††† The turbine shaft being inspected is held horizontally and rotated by the customerís existing handling and repair equipment or when part is still in the lathe. The tripod and scanner are placed near the test article and the probe is place in the area to be inspected using the 3 axes. The probe holder is detented every 90 degrees to allow inspection either on the edges or on the sides of disks and shafts. The third encoder is placed against the shaft or disk and is driven by the friction wheel. The friction wheel encoder is combined with one of the scannerís encoders, depending on the scan being performed, to build C-scan data. The manually operated encoded scanner axes are designed to accept standard size 23 and 34 stepping or servo motors for full automation of the scanner.
†††† While designed originally for turbines, this scanner can be used in any number of other places and can hold a variety of ultrasonic or eddy current probes. An optional water catch basin, filter, and recirculating pump are available.
The photos below show the unit in the field as well as pictures of the transducer and encoder. The transducer fork is spring loaded against the part for uniform transducer loading. The transducer fork is also mounted on a detent mechanism that indexes every 90 degrees.
Shown below is the optional Vertical Extension Tube that raises the entire scanner above the tripod.
This increases the vertical range without affecting the overall rigidity of the system during scanning.