The CHAIN™ scanner is the optimum, manual pipe-inspection solution for a pipe range with outside diameter of 45 mm to 965 mm (1.75 in. to 38 in.) and the possibility of two encoded axes. The scanner, which is held by chain links instead of magnetic wheels, is able to inspect ferromagnetic or nonferromagnetic surfaces. The chain links also help ensure a straight displacement of the scanner as it eliminates steering problems. Finally, it is useful when the area around the pipe is not entirely accessible as the scanner can be rotated around the pipe using the chain links.

Main applications are:

• Circumferential-pipe weld inspections with phased array, TOFD, or conventional UT
• Corrosion mapping of small areas with phased array or conventional UT (using XY; 2 encoder models)

Probe-positioning system with lead screw adjustment

Standard Inclusions

• Main module with a scan-axis encoder
• Chain links for 5 in., 16 in., or 38 in. pipe OD (depending on model) with quick-release adjustable buckle
• 5 m encoder cable for OmniScan
• 450 mm (17.7 in.) probe-holder bar
• Two spring-loaded probe holders with adjustable TOFD-P/E yokes
• Two spring-loaded probe holders with adjustable phased array yokes
• Probe-positioning system with lead screw adjustment
• 5 m divisible cable conduit (19 mm ID)
• Irrigation tubes and fittings
• CHAIN™ scanner tool
• Carrying case

Note: Probes and wedges are not included with the scanner.

Specifications

Note: specifications above apply to the main module

Encoder resolution:
Circumferential (X) axis: 19.2 steps/mm
Longitudinal (Y) axis: 56.7 steps/mm

Optional packages

ChainScan-A-4Probe: Extra part package needed to perform inspections with four probes on the CHAIN scanner

ChainScan-A-mouse: Extra part package needed in order to use the CHAIN scanner as a mouse scanner with magnetic-wheel holding system instead of chain links

ChainScan-A-SBar: 20 cm probe-holder bar and lead screw kit for confined space applications

• Standard configuration using one or two probes and optional configuration using four probes for TOFD, phased array, or pulse-echo inspections.
• Pipe range with outside diameters from 45 mm to 965 mm (1.75 in. to 38 in.)
• Encoded manual scan on one or two axis (depend on the model)
• Ergonomic handle to protect encoder connectors and provide cable management
• Independent chain links mounted on bearings wheels coated with urethane for smooth rolling
• Easy clamping device for quick scanner positioning
• Spring-loaded probe holders ensuring good probe contact in any scanner position or orientation
• The majority of adjustments can be made without the use of tools
• Compatible with the OmniScan®, the TomoScan FOCUS LT™ (with optional adaptor), and other instruments using the appropriate encoder cable