T5

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	Weld Displacement Tranducer Model WLP


	MEASURES WELD SET-DOWN

	MONITORS TOOL WEAR

		DETECTS MISSING WELD NUTS

		REPEATABILITY < 0.0001”

LINEARITY < 0.25% FS

DURABLE STAINLESS STEEL

The WLP Weld Displacement Transducer is a rugged, precise linear displacement transducer. This Linerar Variable Differential Transformer (LVDT) is constructed of stainless steel for use in the harsh resisance welding environment. This device is easily mounted to a variety or ranges and measures weld tooling position throughout the welding process. Select the correct range to adapt it to various applications from micro-joining to automotive spot welding, to heavy-duty projection welding.

For spot welding applications, the WLP Weld Displacement Transducer measures initial positionand final “set-down” to give a good indication of the quallity of the formed nugget. For projection welding applications, it can detect missing or upside-down nuts then detect final “set-down” to give a strong correlationto final weld quality. The WLP accurately measures the same parameters in micro-joining applications, cross-wire welding and wire-to-plate welding.

Interfaced with a variety of digital electronic instrumentation, the WLP produces a simple relay contact closure to halt a misweld. Similarly, relay limits can be set for a range of acceptable “set-down” data that meets your quality standards. Statistical data can be downloaded through an RS485 interface to track tool wear and other weld data.


			PERFORMANCE

	ENVIRONMENTAL

ELECTRICAL

		MECHANICAL

Displacement Ranges	0-0.4,0-0.6,0-1.0,0-2.0,0-4.0,0-6.0,0-8.0 inch
Repeatability	< 0.0001 inch
Linearity	+/- 0.25% FS
Resolution	Infinite

Temperature,Operating	0^o F. to 250^o F.
Temperature,Effects
-Zero	0.006% FS/^oF.
-Span	0.006 Rdg./^oF.

Excitation	3V RMS @ 5KHz.
Output Load	100K Ohms
Electrical Termination	Multi-conductor, shielded cable leads

Case Construction	Stainless Steel
Probe Material	Stainless Steel
Armature Type	Captive guided or spring return


	HOW TO ORDER

	DIMENSIONS

0-0.4 inch	HN
0-0.6 inch	HF
0-1.0 inch	HP
0-2.0 inch	HQ

0-4.0 inch	HR
0-6.0 inch	HS
0-8.0 inch	HT

Order Code	Range (in.)	L (in.)	D (in.)	d (in.)	x (in.)	Wgt (oz.)	Spring Force max (oz)	Fig.
AW621HN	0-0.400	2.70	0.37	0.18	0.45	0.92	4.58	A
AW621HF	0-0.600	3.33	0.37	0.18	0.72	1.06	8.64	A
AW621HP	0-1.000	4.64	0.37	0.18	0.97	1.48	7.58	A
AW621HQ	0-2.000	6.35	0.81	0.19	2.5	8.00	4.00	A
AW621HR	0-4.000	11.6	0.82	0.19	3.0	18.0	n/a	B
AW621HS	0-6.000	16.0	0.82	0.19	4.5	23.0	n/a	B
AW621HT	0-8.000	17.8	0.82	0.19	5.0	25.0	n/a	B


INSTRUMENTATION

	The WLP Weld Displacement Transducer is interfaced with a variety of instruments and signal conditioners. We offer a WM9000 WeldMeter family including single and mult-channel devices providing complete signal conditioning for up to 14 channels. A variety of features include limits, auto zeroing and external tare. Various relay configurations and analog and digital output signals are available.

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