E7-28 Broadband Immittance Analyzer is a precision instrument of accuracy class 0.1 with a wide range of operating frequencies. By technical parameters, it replaces most of the E7 class devices manufactured in the CIS countries.
E7-28 broadband immittance analyzers are designed to measure the immitance parameters of electrical radio elements (ERE) in the frequency range from 25 Hz to 10 MHz.
Scope - scientific research, control of electrical parameters of electric energy devices at enterprises, in repair shops, scientific institutions.
The device measures the following immitance parameters:
Lp, Ls - inductance in a parallel, serial equivalent circuit;
Cp, Cs - capacity in a parallel, sequential equivalent circuit;
Rp, Rs - active resistance in a parallel, serial equivalent circuit;
X is the reactance in a series equivalent circuit;
G is the active conductivity in a parallel equivalent circuit;
B - reactive conductivity in a parallel equivalent circuit;
tg δ is the loss tangent (the designation D is allowed - loss factor);
Q - quality factor;
| Z | - integrated resistance module;
| Y | - module of complex conductivity;
φ is the angle of the phase shift of the complex resistance.
Objects of measurement: capacitors, inductors, transformers, resistors, relays, switches, diodes, cables, input resistances and capacities of oscilloscopes, voltmeters and other devices. With appropriate sensors, the device can measure various physical quantities.
The measuring ranges correspond to the values indicated in the table.
Физическая величина
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Диапазон измерений
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Rp, Rs, Х, |Z|
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10 mOhm to 100 MOhm
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G, В, |Y|
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10 nS (100 MOhm) to 100 cm (10 mOhm)
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Lp, Ls
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from 64 μH (10 mOhm) to 640 kH (100 MΩ)
at a frequency of 25 Hz at φ = 90 °;
from 160 nH (1 Ohm) to 160 μH (10 kOhm)
at a frequency of 10 MHz at φ = 90 °
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Сp, Сs
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64 pF (100 MΩ) to 0.64 F (10 mΩ)
at a frequency of 25 Hz at φ = 90 °;
1.6 pF (10 kΩ) to 16 nF (1 Ω)
at a frequency of 10 MHz at φ = 90 °;
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D, Q
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minus 90 ° to minus 0.001 °
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φ
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from plus 0.001 ° to plus 90 °
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Note - Display format 5 decimal places.
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