GenRad 1423A Decade Capacitor
The GenRad 1423A decade capacitor stands out as an essential instrument for calibration laboratories and production-line testing environments. Whether you’re standardizing a bridge with unmatched accuracy or conducting thorough production line measurements, the GenRad 1423A offers unparalleled performance, rivaling that of individually certified laboratory standards like the GR 1404 Reference Standard Capacitors.
Designed for efficiency, this capacitor works seamlessly with limit bridges, such as the GR 1689 Digibridge, enabling swift and precise measurements of arbitrary capacitance values with minimal setup time. With the ability to set capacitance values ranging from 100 pF to 1.111 µF in convenient 100 pF steps, the GenRad 1423A ensures reliability with an impressive accuracy of ±0.05%. The terminal capacitance values can be meticulously set to their nominal values and easily readjusted at calibration intervals, ensuring consistent performance without disturbing the main capacitors.
Key Features:
The GenRad 1423A is engineered with four decades of high-quality silvered-mica capacitors, mirroring the quality found in GR1409 Standard Capacitors. Its assembly includes the following key aspects:
- The capacitors and associated switches are housed in an insulated metal compartment, further enclosed within a complete metal cabinet. This double-shielded design guarantees that terminal capacitance remains consistent whether employing the three-terminal or two-terminal connection methods, with only a slight, constant difference of about one picofarad.
- For calibration via the two-terminal method, a single trimmer adjustment can effectively incorporate this external capacitance.
Specifications:
- Nominal Value: 100 pF to 1.111 µF in 100 pF increments.
- Accuracy: ±(0.05% + 0.05 pF) at 1 kHz, calibrated in three-terminal connections. Two-terminal connections (with Type 777-Q3 Adaptor) may add approximately 1.3 pF.
- Stability: ±(0.01% + 0.05 pF) per year for sustained performance.
- Dissipation Factor: Maximum of 0.001, 0.0005, and 0.0003 for capacitance ranges of 100 to 1000 pF, 1100 to 2000 pF, and 2100 pF to 1.111 µF, respectively.
- Temperature Coefficient of Capacitance: Approximately 20 ppm per degree Celsius from 10°C to 50°C, ensuring dependable measurements across various conditions.
- Maximum Voltage: 500 V peak at frequencies up to 10 kHz, lending itself to a variety of testing environments.
The GenRad 1423A is the definitive choice for those requiring precision, stability, and versatility in their capacitance measurement needs.
