- Values 0.001 µF (1 nF) to 1000 µF
- Stability as good as ±0.01 %/year
- Two-to-five terminal configuration, depending on model
- Calibration accredited to ISO-17025 included
- 3 year warranty included
The GenRad 1409 Standard Capacitor is series of highly stable, cost-effective capacitance standards. With low temperature coefficient, low losses and these standard capacitors come in a wide range of capacitance values from 1 nF - 1,000 µF. Up to 1 µF, the standard capacitors are constructed of fixed mica capacitors of very high stability for use as two- or three-terminal reference or working standards in the laboratory. From 1 µF to 10 µF the units are made of hermetically sealed polystyrene for 10 μF. Above 10 μF the capacitor is hermetically sealed polycarbonate,
Typical capacitors, observed over decades, have shown random fluctuations of less than + 0.01% in measured capacitance with no evidence of systemic drift.
The capacitors are made out of ≤1 µF silvered-mica and foil, spring-held in a heavy metal camp for mechanical stability. The units are selected for low dissipation factor and are stabilized by heat cycling. They are housed in cast aluminum cases, along with silica gel which provides continuous desiccation. These cases are sealed with high-temperature wax. A well is provided in the wall of the case for insertion of a dial-type thermometer. Three jack-top binding posts are provided on the top of the case, and removable banana plugs on the bottom, for convenient parallel connection without error
A well is provided in the wall of the case for inserting a dial-type thermometer. For convenient parallel connection without error, three jack-top binding posts are provided on the top case, with removable plugs on the bottom.
Calibrazione: un certificato di calibrazione accreditato da A2LA a ISO-17025 è fornito con ogni unità,
Condizioni di calibrazione e test: tarato a 23 ° C, <50% RH, tracciabile a SI 1 nF - 1 μF: le unità sono calibrate sia come condensatori a 2 terminali che a 3 terminali. Per le misurazioni a 2 terminali, il terminale LO viene cortocircuitato sul terminale GND . Le regolazioni al nominale specificate nella tabella sopra si applicano alle misurazioni a 2 terminali. 10 μF - 1000 μF: Le unità sono calibrate come condensatori a 5 terminali, "modello di serie"
Valore nominale | Modello | Regolazione a nominale | Coefficiente di temperatura (ppm / ° C) | Frequenza di calibrazione | Dissipazione (tipico) | Stabilità (per anno) | terminali | Tipo di condensatore |
1 nF | 1409-F | ± 0,02% | 20 | 1 kHz | 0,0003 | ± 100 ppm | 2 bp's + gnd | Mica argentata meccanicamente stabilizzata ermeticamente sigillata |
10 nF | 1409-L | ± 0,02% | 20 | 1 kHz | 0,0003 | ± 100 ppm | ||
100 nF | 1409-T | ± 0,02% | 20 | 1 kHz | 0,0003 | ± 100 ppm | ||
1 μF | 1409-Y | ± 0,02% | 20 | 1 kHz | 0.0002 | ± 100 ppm | ||
10 μF | 1409-10μF | ± 0,04% | ± 50 | 100 Hz | 0,0005 | ± 200 ppm | 4 bp's + gnd | Solfuro di polipropilene metallizzato (MPPS) sigillato ermeticamente |
100 μF | 1409-100μF | ± 0,05% | ± 50 | 100 Hz | 0.001 | ± 500 ppm | ||
1.000 μF | 1409-1000μF | ± 0,4% | -150 | 100 Hz | 0.001 | ± 500 ppm |