TM 9-6695-274-14
Figure 1-32. Ballantine, Model 1394( ), Thermal Converters.
Ballantine, Model 1394(), Thermal Converters are wide frequency range rms voltage standards. They are designed to
provide accurate voltage measurements, using ac/dc transfer techniques, and precise frequency influence tests.
PRECAUTIONS
The thermocouple heater of model 1394() can withstand continuous, overloads of 20
percent (to 6 mA). Overloads greater than these can result in a permanent change of
thermocouple characteristics or burnout of the heater. Burnout occurs so rapidly that the
rise in dc couple output cannot be detected. Therefore, it is necessary to take every
precaution to avoid overloading the thermocouple.
Figure 1-33. Guildline, Model 9711, Current Shunt.
Guildline, Model 9711, Current Shunt (fig. 1-33) is a self-contained 9 range, 4 terminal shunt for precision current
measurement up to 300 A. Each shunt resistor Provides a 100 mV drop at nominal rated current. A potentiometer or digital
voltmeter is needed as a readout for wide range precise current measurements.
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