Capacitance and Inductivity Decades

IET Decade Capacitance Selection

IET Labs manufactures a full line of capacitance decade boxes that will
meet any need.  Whatever your application, IET Labs has a decade box
solution. Our capacitance decade boxes can be custom built to your
specifications, so you do not have to pay for what you don't need.

Low Cost, Field Grade Capacitance Decade Boxes

>> CS, General / Field grade
0.5% - 4%, 0 - 1000 μF, 1 pF
General purpose; economical; thumbwheel switches.
>> RCS, Field grade Capacitance and Resistance Box
0.5% - 4%, 0 - 1000 μF, 1 pF
A combination of a CS, Capacitance Box, and a RS, Resistance Box

High-Accuracy Capacitance Decade Boxes

>> HACS-Z, High accuracy; low zero capacitance Decade
0.05% - 0.1%, 0 - 10,000 μF, 1 pF
Laboratory grade; high stability; low TC
>> GenRad 1412, Stable polystyrene
0.5%, 50 pF, 1 pF
Precision decade with variable fine adjustment
>> GenRad 1413, High accuracy: low zero
0.05%, 0 - 1.11111 uF, 1 pF
Laboratory grade; high stability; low TC
>> GenRad 1417, High Capacitance Standard
0.02%,1 μF - 1 F, 1 mF
High value precision capacitance
>> GenRad 1422, Precision variable air capacitor
0.1 pF - 1.5 pF, 10 - 1100 pF, 0.02 pF
High resolution and stability;low loss.
>> GenRad 1423, Precision Decade Capacitor
0.05%, 100pF to >1μF, 100 pF
Two- or Three- terminal connection
>> GenRad 1419, High Accuracy Capacitance
0.05%, 100pF-1.1μF, 100pF
Choice of models with two- or three terminal connection.

Programmable Capacitance Decade Boxes

>> PC, Programmable Decade
0.5% - 4%, 0 - 1000 μF, 1 pF, EEE-488 or RS-232

További információk a gyártó honlapján:
www.ietlabs.com/decadecap.html

Low Cost/Field Grade Capacitance Decade Boxes

C-box CS Series Digital Capacitance Box

The CS Series Digital Capacitance Box is an economical, indispensable
collection of tools with a variety of uses in engineering, design,
troubleshooting, or service fields.

Best Substituter Value Available > Accurate .01% to 1% > Available from 0 to 999.9999 µF > Broad choice of standard and optional models with many powerful features > Compact, convenient, and rugged > Panel Mounting, Shielded Case and Fuse Protection options available

Manual Multi-function Decade Box
RCS-box Series Digital Substituter

The RC-box combines the features and specifications of both the R-box
and the C-box in one convenient package. Ideal for setting timers,
oscillators, and filters, the resistance and capacitance may be used
independently, in series, or in parallel. A shorting link allows them to be
coupled or separated.

Best Substituter Value Available > Accurate .01% to 1% > Available from 1 pF to 999.9999 µF > Broad choice of standard and optional models with many powerful features > Compact, convenient, and rugged > Panel Mounting, Shielded Case and Fuse Protection options available

For more information, see the manufacturer's site:
www.ietlabs.com/IET/RCSbox.html

High-Accuracy Capacitance Decade Boxes

Cost Effective Laboratory Grade Decade Box
HACS-Z Series

The HACS-Z provides a wide range of capacitance in increments as low
as 1 pF and a total capacitance of up to 10,000 μF. With its high quality,
tight tolerance capacitors, it is an ideal part of a test or calibration system.

> 3-Terminal, double shielded contstruction
> High accuracy: 0.05% or 0.1%
> Low zero capacitance < 0.1 pF
> Trimmable capacitors for lower decades
> Excellent stability - 100 ppm/yr
> Rack mounting available
> Excellent TC - as low as 20 ppm/°C
> Optional GR874 Hermaphroditic connectors
> BCD Programmable version available

For more information, see the manufacturer's site:
www.ietlabs.com/IET/HACS-Z.html

Stable Polystyrene Decade Capacitor, 1412 Series
Model 1412-BC

The wide capacitance range and high resolution of this decade
capacitance box make it exceptionally useful in both laboratory and test
shop. Owing to its fine adjustment of capacitance, it is a convenient
variable capacitor to use with an impedance comparator. The polystyrene
dielectric used in the decade steps is necessary for applications requiring
low dielectric absorption and constancy of both capacitance and
dissipation factor with frequency.

> 50pF to >1 uF > Better than l pF resolution > Accuracy of +/-(0.5% +5pF) > Low loss, leakage, dielectric absorption

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1412.html

Precision Decade Capacitor, 1413 Series

IET continues to produce the 1413 Series Decade Capacitor to the same
exacting specs as GenRad. The 1413 is not only a precision standard,
it is a systems component as well - connections are made at the rear for
this purpose.
Six precision decades are employed to provide a range of 0 to 1.11111µF
in increments as small as 1 pF and with an accuracy of 0.05% +0.5pF.
Air capacitors are used for the two lower decades and precision
silvered-mica capacitors are used for the remainder. The lower four
decades contain adjustments that are factory set but accessible for
readjustment later if desired.

> 0 to >l µF > 0.05% basic accuracy > 6-digit resolution > 3-terminal connections > Optional rear-mounted GR-874 locking connectors.

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1413.html

Capacitance Standard up to 1F, 1417 Series

The 1417 Four-Terminal Capacitance Standard consists of a 1µF
standard capacitor and two precise inductive voltage dividers used to
scale the value of the 1µF capacitor up to 1F in decade steps.
This arrangement provides accuracy and stability unattainable with very
high-value true capacitors.

> 0 to >l µF > 0.05% basic accuracy > 6-digit resolution > 3-terminal connections > Optional rear-mounted GR-874 locking connectors.   For more information, see the manufacturer's site: www.ietlabs.com/Genrad/1417.html

Low-loss Variable Air Capacitors, 1422 Series

The 1422 is a stable and precise variable air capacitor intended for use
as a continuously adjustable standard of capacitance. One of the most
important applications is in AC bridge measurements, either as a built-in
standard or as an external standard for substitution measurements.
It is available in a variety of ranges, terminal configurations, and scale
arrangements to permit selection of precisely the required characteristics.

> Stability: better than 0.02% full scale per year > Settable to 40ppm > Low Temperature coefficient, low losses > Wide selection to suit needs > 3 different models

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1422.html

Type 1423 – A Precision Decade Capacitor

This decade capacitor is a versatile tool for calibration laboratories and
production-line testing. With it a bridge can be standardized to an
accuracy exceeded only by that of the highest quality, individually certified
laboratory standards such as the GR 1404 Reference Standard
Capacitors. Used with a limit bridge, such as the GR 1605-A Impedance
Comparator, the 1423 Decade Capacitor facilities fast and accurate
production-line measurements of arbitrary capacitance values with
minimum setup time.
Any value of capacitance from 100 pF to 1.111mF, in steps of 100 pF,
can be set on the four decades and will be known to an accuracy of
0.05%. The terminal capacitance values are set precisely to the nominal
value and can be readjusted later at calibration intervals, if necessary,
without disturbance of the main capacitors.

The GenRad 1423 Decade Capacitor consists of four decades of
high-quality silvered-mica capacitors similar to those used in the GenRad
1409 Standard Capacitors. The capacitors and associated switches are
mounted in an insulated metal compartment, which in turn is mounted in
a complete metal cabinet. This double-shielded construction ensures that
capacitance at the terminals is the same for either the three-terminal or
the two-terminal method of connection (except for a constant difference
of about one picofarad). This external capacitance can be included in the
two-terminal calibration by the adjustment of a single trimmer

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1423.html

GenRad 1419 Decade Capacitors

> 100 pF to 1.1 mF > choice of models > two- or three terminal connection Type 1419 Decade Capacitors are offered in three models using two different dielectric materials to satisfy a variety of needs.

Type 1419-A and –B (Polystyrene)
Capacitance and dissipation factor constant with frequency, essentially
noninductive, very low dielectric absorption. The dielectric is specially
prepared of purified high-molecular-weight polystyrene, having very high
resistance and freedom from interfacial polarization. Moisture sealing
with Teflon* feed-through insulators assures high performance under
adverse humidity conditions.
Type 1419-K (Silvered Mica)
Higher accuracy, low dissipation factor, and +35 + 10 ppm/° C
temperature coefficient (10-50° C) for use in higher ambient temperatures.

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1419GenRad.html

For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1419GenRad.html

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