CH-14D precision decade large-capacitance box

CH-14D precision decade large-capacitance box adopts four-terminal output mode, and realizes the output of the capacitance range of 1μF~1,110μF with three-digit decade changeover switch. Any of the decade readings within the range has equal high capacitance accuracy and stability(±0.05%). The capacitance box has perfect shielding, and negligible zero-switch capacitance(<0.00005pF), and is superior to the similar products available on market. This capacitance box is suitable for verification of RLC measuring instruments, and can be used as standard capacitance measuring instrument in measurement institutions, research institutes, factories, universities, and etc.

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Calibration conditions


Ambient temperature: (23±2)℃

Relative humidity: (50±10)%


Operation conditions


Ambient temperature: 10℃ to 40℃




1. Capacitance range:     1μF~1,110μF


2. Minimum step size:     1μF


3. Digits of reading:      Three-digit decimal system


4. Zero-switch capacitance:     <0.00005pF


5. Accuracy:      ±(0.05%+0.00005pF)


6. Temperature coefficient:     ≤20ppm/℃  from 1μF~1000μF


7. Stability:     ≤200ppm per year from 1μF~1000μF


8. Output mode:     Four-terminal output


9. Calibration frequency/operating frequency (f):      100Hz


10. Maximum voltage (U):     ≤50V


11. Dimension:     310mm×260mm×140mm

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