Bare PCB #110758-1 for the Main Board of the 500 ppm LCR Meter Project, as described in Elektor Magazine March & April 2013.
Recommended enclosure: HAMMOND - 1455L1601 - ENCLOSURE, ALUMINIUM END PLATE (not included, available a.o. at Farnell and RS components).
The remarkable precision of this device and its amazing ease of use are the result of careful design. It works so well that one could almost forget the subtleties of the measurement techniques employed...
|L||0.1 nH - 100 H|
|C||0.1 pF - 100 mF|
|R, |Z|||0.1 mΩ - 1,000 MΩ (1 GΩ)|
|Q or D||0 - 10,000|
|Φ||-90.00° to +90.00°|
|Rs, Xs||0.1 mΩ - 1,000 MΩ (1 GΩ)|
|Ux||0 - 500 mV|
|Ix||0 - 5 mA|
Without display: 5 V – 100 mA
With backlit display: 5 V – 180 mA
Accuracy of the main parameter (R, L, C):
(Conditions: Warmed up for 10 minutes, 25°C ± 2°C, use of 0.01 % resistors (100 Ω, 1 kΩ, 10 kΩ, 100 kΩ) in the current/voltage converter.)
Ranges 3, 4, 5, and 6: < ±500 ppm (0.05 %) (down to 200 ppm **) ±1 on the final digit
Ranges 2 and 7: < ± 1000 ppm (0.1 %) (down to 800 ppm) **) ±1 on the final digit
Ranges 1 and 8: < ± 3000 ppm (0.3 %) ±1 on the final digit
** The accuracy (±1 unit in the last figure on the right) is greatest when the post-amplification ranges are the same for U and I.
PC software available for Windows (XP or higher), Linux and MacOSX.
|In Elektor #||595|