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Agilent/ HP The 4329A also has a current measurement capability. Minute currents as...
The 4329A also has a current measurement capability. Minute currents as low as 0.05 pA can rapidly be measured. The 4329A is a solid-state insulation resistance meter designed for easy, accurate and direct readings of very high resistance values typically found in synthetic resins, porcelain, insulating oils and similar materials. It is also useful for measurements in electrical components such as capacitors, transformers, switches and cables. Seven fully regulated dc test voltages (between 10 and 1000 Vdc) are provided as test sources. The 4329A is instantly convertible from ungrounded-to-grounded-sample operation via a simple relocation of the front panel ground strap from “guard” to “+” position.Condition: Pre-OwnedCall for Availability
The HP 4329A high resistance meter is a solid-state measuring instrument intended for many very high resistance test applications. The 4329A may be applied directly to the measurement of resistive elements such as high-valued resisitors, capacitors, and materials, or to the examination of volume and surface resistivities of solid or liquid materials using suitable resistivity cells. Covering a resistance range of 500 kΩ to 2 x 1016 Ω, the 4329A is provided with seven discrete test voltages for maximum flexibility over the resistance range. Automatic indication of meter and multiplier scales to be read is featured, providing rapid reading and straightforward operation.
The 4329A uses a "self-oscillating parameteric converter" circuit. A variable-capacitance diode bridge circuit serves as the parametric element.
The internal dc current measuring circuit, which is the heart of the instrument, is made available for current measurement. Use of the 4329A as a picoammeter is intended as a limited application because of the need to calculate errors. However, this added current measurement is a convenient complement to high-resistance testing.
The 4329A has a "recorder output" voltage that is proportional to meter deflection. This voltage varies from 0 to 100 mVdc for meter deflection from ∞ to full-scale.
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Agilent HP The 4329A
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