Product data sheet magnetic yokes Our portable hand yokes are the perfect mobile crack detection units, particularly for checking ferromagnetic parts when burn marks or annealing must not occur. TWM 220 N TWM 230 A The TWM 220 N hand yoke is an AC current instrument that can be directly connected to a 230V AC supply. Used with our adjustable pole pieces, it is ideally suited for testing uneven surfaces, tube bends,angle pieces etc. The TWM 230 A hand yoke is equipped with a switch which can be replaced when it becomes worn or faulty. It also has a special switching circuit, meaning that the yoke is switched on when the AC current is passing through zero, thereby greatly extending the life of the switch and the yoke. tWM 42 a/n JWM 230 The AC hand yoke TWM 42 A/N operates at 42 V supplied from a separate transformer which is connected to a 230 V AC supply. This satisfies the VDE safety regulations, which means that the TWM 42 A/N can be used for testing inside vessels, tubes and closed containers. This yoke is also equipped with an exchangeable switch. Ref. No. Separate transformer 077110 Weight of transformer 7 kg The hand magnet JWM 230 yoke is small, lightweight, and easy to use, with an output sufficient to satisfy the majority of test requirements. It is both 230 V/AC and 12 V/DC (the DC connection requires a transformer). Note: The JWM 230 yoke must be operated with a pole attachment - see next page. When mounted on the yoke, our articulated pole pieces are designed to extend the range of test applications and ensure the optimum development of the magnetic field within the test piece. Suitable accessories Ref. No. Transformer for 12V-DC-operation 077120 Adaptor Cable 077501 Product data sheet magnetic yokes KWM 42 YM-5 The cross yoke KWM 42 has two AC yokes displaced by 90° so that both longitudinal and transverse cracks can be detected in one single operation. Two castors on each magnetic pole maintain a constant air gap and enable the yoke to be moved easily over the test surface.Powered by a 3-phase supply through a separate transformer. Separate transformer 3 x 400 / 42 V / 50 Hz (60% of duty ratio) Ref. No. 074020 Weight of transformer 23.6 kg The YM-5 magnet is ideal for the effective magnetization of components for crack detection, particularly where the use of electromagnetic yokes is impractical or prohibited for safety reasons. The hinged arms and rotating angled pole pieces facilitate the local inspection of a diverse range of components such as critical welds and automotive parts. The YM5 has been crafted in Magloy 1 for maximum magnetic field strength. pole pieces for JWM 230, TWM 42 A/N, TWM 220 and TWM 230 A Articulated legs for fillet seam inspection Ref. No. 077004 45° poles for fillet seam inspection Ref. No. 077003 Articulated legs for inspection of angle pieces, tube bends and other uneven areas Ref. No. 077001 Protective poles to safeguard the pole areas Ref. No. 077002 Product data sheet UV lights and accessories Specifications TWM 220 N TWM 230 A 071301 071310 Ref. No. Conforms to Electrical supply TWM 42 A/N N: 072301 A: 072310 EN ISO 9934-3 KWM 42 JWM 230 YM5 074001 075002 075002 42 V AC 230 V DC 12 V - BS 6072 230 V 230 V 42 V 28 x 22 mm 28 x 22 mm 28 x 22 mm 27 x 27 mm 23 x 27 mm 32 mm Weight of yoke 3.2 Kg 3.2 Kg 3.5 Kg 10.8 Kg 3 kg Pull-off strength 18 Kg AC 18 Kg AC 17 Kg AC 17 Kg AC 2.9 Kg AC 5 - 16 Kg DC 20 - 30 Kg Frequency 50 Hz Pole cross section - > 18 Kg DIMENSIONS 1 Unit type A mm B mm C mm D mm1 E mm F mm2 G mm1 H mm J mm2 JWM 230 TWM 220 N TWM 42A/N TWM 230 A KWM 42 167 168 168 168 320 270 268 268 268 205 117 158 158 158 195 285 285 285 285 80 159 202 202 202 207 250 250 250 105 105 105 105 159 202 202 202 207 250 250 250 min. pole distance 2 Height in straight position with adjustable poles: fix mounded at JWM 220, can be mounded to all other TWM unit types (optional) These details are subject to technical innovations and modifications at any time. Product data sheet magnetic yokes carry case Carry case made from wear-resistant plastic designed to hold the following: • 1 AC hand yoke (TWM 220 N, TWM 230 A, BWM 220/12, JWM 220 or TWM 42 A/N (without transformer) • 1 portable UV light (for example UV-LED NET 365) with standard tranformer (not an isolating transformer) • 1 UV spare bulb (depending on equipment) • 1 UV spare filter glass (depending on equipment) • 1 set of pole pieces each Ref. No. 136001 (case without contents) Ref. No. 136005 (case without contents but suitable for transportation/storage of Labino portable UV-lights instead of portable UV-LED lights.) T +49 (0) 7365 81-0 Version 14.1 Bahnhofstr 94-98, 73457 Essingen, Deutschland F +49 (0) 7365 81-449 E [email protected] Faraday Road, South Dorcan Industrial Estate, Swindon, Wiltshire, SN3 5HE, UK T + 44 (0)1793 524566 F +44 (0)1793 490459 E [email protected]
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