WM-Series
Permanent Magnet Yokes
Features:
§  Powerful Lift			§  Completely Portable
§  Light Weight			§  Durable
§  Compact			§  Hinged Frame and Cable Type
§  No Recharging			§  Hazardous Zones
Uses:
§  Automotive	§  Pressure Equipment			§  Manufacturing
§  Aerospace	§  Piping			§  Fabrication
§  Weld Inspection
Permanent Magnet Yokes
Western Instruments offers 3 models in the WM-Series of Permanent Magnet Yokes. These
models consist of both Hinged Frame and Cable Type configurations, sot the inspector’s
preference is assured. Permanent Magnet Yokes are a great convenience in Magnetic
Particle Inspection, due to their complete portability, as no electricity is required. All
WM-Series Yokes utilize Rare Earth Magnet Cartridges specifically manufactured to our
high performance needs. WM-Series Yokes lift over 60 Pounds, and with recharging not
being necessary, the minimum lift of 50 pounds (23 Kg) is assured for years.
The WM-5 and WM-5LT are Hinged Frame units, equipped with Rotating Contact Feet,
which easily permits the inspector to maximize the contact area between the Dual Contact
Surfaces on the pole pieces and the workpiece. Both of these units have field replaceable
magnet cartridges, in the unlikely event of a failure. The WM-5 is considered a Standard
Permanent Magnet Yoke, while the WM-5LT is a lighter weight alternative.
The WM-5C is our Cable Type Permanent Magnet Yoke. The Coated Cable allows a
great deal of flexibility to easily permit maximum contact area between the Non-Ferrous
contact surface and the workpiece. The Hand Grip is Ergonomically designed for operator
comfort, with provisions for easy removal off the workpiece.
All WM-Series Yokes are delivered with a Calibration Certificate and Operators Manual.
Specifications:
Models:		WM-5, WM-5S and WM-5C
Capacity:		All are >50 Pounds (23 Kg)
Field Strength with Tips in Contact:                               WM-5                               WM-5LT                               WM-5C		9200 Gauss 8500 Gauss 10900 Gauss 2mm (0.80”) Air Gap
Field Strength with 2” (50mm) Air Gap:                               WM-5                               WM-5LT                               WM-5C		510 Gauss 380 Gauss 5700 Gauss (Single Pole Only)
Pole Spacing:                               WM-5                               WM-5LT                               WM-5C		0-14” (0-350mm) 0-14” (0-350mm) 0-24” (0-610mm)
Weight:                               WM-5                               WM-5LT                               WM-5C		5 Pounds (2.3 Kg) 3 Pounds (1.4 Kg) 2 Pounds (0.9 Kg)
Inspection Kits
Western offers inspection Kits for the following Methods
Dry•Wet•Wet/Dry•Wet Fluorescent
WE-5 Dry Method Inspection Kit Shown;
Yoke, Carrying Case (*), 2 Cans of Cleaner/Remover,
2 Cans White Contrast Paint, 2 Cans Black Particle,
Pie Gauge (or Field Indicator or Castrol Strips)
* Custom Soft Sided Carrying Case Illustrated