RELAY MEASURING EQUIPMENT 



X-Y RECORDER 



POWER SUPPLY 



GALVANOMETER AND 

 INTEGRATOR UNIT 



Fig. 3 — Recording fluxmeter. 



methods of cross-analysis described in a separate article in this issue, 

 these data may be used to find the figures of merit for the magnet, and 

 other information concerning its performance. 



Often the measurement of magnetic potential at different locations in 

 a magnetic circuit is re(juired. Among the more versatile of such tools is 

 the Elhvood magnetomoti\-e force gauge. A brief description of its 

 operation appears in a companion article.' 



The above measurements provide information on the static magnetic 

 charaeteristies of a relay, but they do not provide all the information 



