Capacitance and Inductivity Standards
IET Capacitance Standard Selection
ET Labs manufactures a full line of capacitance standards that will meet
any need. Whatever your application, IET Labs has your capacitance
solution. Our capacitance standards can be custom built to your
specifications; we can provide you with any capacitance value at any
accuracy you require.
IET Labs and GenRad capacitance standards employ a variety of
time-tested materials and technologies that are tailored to specific
applications and environments
Accurate, Cost Effective Capacitance Standards
>> SCA, Capacitance, high accuracy
0.01% - 0.04%, 1 pF - 1900 μF, Accurate, portable, economical.
>> GenRad 1409, Capacitance, high accuracy
0.01%, 10 pF - 1000 μF, Accurate, stable, economical
>> GenRad 505, Capacitance, low cost
0.5% or +/-3pF, 100 pF - 0.5 μF, Small, convenient, stable and accurate
>> GenRad 1403, Low -Value Capacitance
0.01%, 0.001 pF - 1000 pF, Values of 0.001 pF, 0.01 pF, 0.1 pF
Primary Capacitance Standards
>> GenRad 1404, Capacitance, Nat’l std lab type
5 - 11 ppm, 10 - 1000 pF, Very accurate and stable; very low TC
>> GenRad 1408, Capacitance w/oven
5 - 11 ppm, 10 - 1000 pF, Dual unit with virtually zero TC
For more information, see the manufacturer's site:
www.ietlabs.com/stdcap.html
IET Inductance Standards Selection
Our inductance standards products cover a full range of applications
including field, laboratory and Automated Test Equipment.
Remember, IET Labs builds it's own products, so you can custom
specify options including special schedules (per decade fixed and
% accuracy) as well as specific power dissipation or terminal
configurations.
>> SLC, Inductance
0.8%, 100 μH - 10 H, Toroidal inductors, economy.
>> GenRad 1482, Inductance
0.025%, 100 μH - 10 H, Toroidal inductors,
National Standard Laboratory grade.
For more information, see the manufacturer's site:
www.ietlabs.com/stdinduct.html
Accurate, Cost Effective Capacitance Standards
SC Series Capacitance Standards
High stability cost effective capacitance standards with low temperature
coefficient, low losses and a wide range of values.
 | > Wide range of values - 1 pF to 2000 µF > Excellent stability - 0.01% (100 ppm)/yr > Excellent TC - as low as 10 ppm/°C > Low loss - D as low as 0.0002 |
Terminals: Two BNC connectors for 190 pF and under; two 5-way
binding posts for 1 nF to 190 nF; four 5-way binding posts for 1 µF and
over. Case ground is also provided.
Stability: <(0.01% + 0.1 pF) shelf life per year.
Dimensions: 8.6 cm H x 10.5 cm W x 12.7 cm D (3.4" x 4.15" x 5") or
1000 µF: 8.6 cm H x 30.5 cm W x 8.92 cm D (3.4" x 12" x 3.5").
Transit Case: Optional Model SRC-100 lightweight transit case with
handle, suitable for transporting and storing two units. The case provides
insulation from temperature changes during transportation or Calibration
Report: NIST traceable initial calibration data provided with unit.
Capacitor Type: Air capacitors for 1 pF and 10 pF; hermetically sealed
silvered mica for 100 pF to 100 nF; hermetically sealed polystyrene for
10 µF; hermetically sealed polycarbonate for ≥10 µF.
Operating Temperature: 10°C to 50°C.
For more information, see the manufacturer's site:
www.ietlabs.com/IET/SC.html
GenRad 1409 Series Standard Capacitor
Highly stable cost-effective capacitance standards with low temperature
coefficient, low losses and a wide range of values.
 | Features: > 0.001 µF to 1000 µF > ±0.01 %/year stability > Verify meter and instrumentation calibration > Two-to-five terminal configuration, depending on model > Calibration Certificate Traceable to NIST |
The GenRad 1409 Standard Capacitor are fixed mica capacitors of very
high stability for use as two- or three-terminal reference or working
standards in the laboratory.
Typical capacitors, observed over more than 12 years, have shown
random fluctuations of less than + 0.01% in measured capacitance with
no evidence of systemic drift.
These GenRad 1409 standard capacitor units consist of a silvered-mica
and foil pile, spring-held in a heavy metal clamping structure for
mechanical stability. The units are selected for low dissipation factor and
are stabilized by heat cycling. They are housed, with silica gel to provide
continuous desiccation, in cast aluminum cases, sealed with
high-temperature potting wax. A well is provided in the wall of the case for
the insertion of a dial-type thermometer. Three jack-top binding posts are
provided on the top on the case and removable plugs on the bottom, for
convenient parallel connection without error.
For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1409.html
Primary Capacitance Standards
1404 Series Standard Capacitors
These capacitors have been designed as primary reference standards
of capacitance with which working standards can be compared.
The 1404 Series are the standard of choice in metrology labs, and still
used today by standards bodies around the world.
 | Features:
For more information, see |
1408 Series Standard Capacitors
The continuously improving accuracy of capacitor calibrations by NIST
brings a better knowledge of capacitance to standards laboratories
provided, of course, the laboratories have adequate reference standards.
The 1408 Reference Standard Capacitors, with their high stability,
are suitable for calibration in parts in 107. The 1616 Precision
Capacitance Bridge is highly recommended for accurate calibration of a
wide range of working standards from such a reference.
Features:
> 10 pF and 100 pF combination
> High stability
> Low voltage coefficient
Terminals:
> Two GR-874 locking connectors or BNC connectors; various patch
cords available.
For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1408.html
IET Inductance Standards Selection
SL Series
The SL Series models are highly stable and cost effective inductance
standards with low temperature coefficient, low dc resistance, low losses,
and a wide range of values.
 | > Wide range of values
For more information, see |
Standard Inductor
> stable within ±0.01% per year
> low, known temperature coefficient
> minimized connection errors
> toroidal - free from external fields
1482 Standard Inductor Series
IET continues to produce the 1482 Standard Inductor Series to the same
exacting specs as GenRad. These inductors are accurate, highly stable
standards of self inductance for use as a low frequency reference of
working standard in the laboratory. Records extending over 25 years,
including those of inductors that traveled to national laboratories in
several countries for calibration, show long-term stability well
within ±0.01%.
 | Each inductor is a uniformly wound resiliently supported in a mixture of |
Sizes of 500 µH and above have three terminals, two for the inductor
leads and the third connected to the case, to provide either a two- or three
terminal standard. The 50-, 100-, and 200 µH sizes have three additional
terminals for the switching used to minimize connection errors.
For comparing other inductors with these standards, the 1632-A
Inductance Bridge is recommended.
For more information, see the manufacturer's site:
www.ietlabs.com/Genrad/1482.html
View other products:
www.ietlabs.com
Andeen-Hagerling
AH 2700A
Ultra-precision
Capacitance Bridge
The World’s Most Accurate
50Hz-20kHz Capacitance /
Loss1 Bridge
The AH 2700A offers unparalleled
stability, resolution, linearity and
accuracy in a multi-frequency
capacitance/loss1 bridge (whether
manual or automatic). Its numerous
state-of-the-art features make it an
exceptionally user-friendly
instrument. The precision of the
AH 2700A is creating new
applications in calibration, science,
and production in a wide range
of fields.
Frequencies: 50, 60, 80, 100, 120,
160, 200, 240, 320, 400, 500, 600,
800 Hz and 1.0, 1.2, 1.6, 2.0, 2.4,
3.2, 4.0, 5.0, 6.0, 8.0, 10, 12, 16
and 20 kHz
For more information,
see the manufacturer's site:
www.andeen-hagerling.com/
ah2700a.htm
The World’s Most Stable
Capacitance Standard
AH 1100
The AH 1100 capacitance standard
frame containing from one to four
AH 11A fused-silica capacitance
standards provides reference
capacitors of unexcelled stability.
The inherent stability of this system
when subjected to mechanical or
thermal shock makes it the ideal
transfer standard for capacitance.
The built-in precision temperature
controllers make it a simple, reliable
system to use. These are the only
standards currently sold that are
sufficiently accurate to calibrate
the AH 2500A capacitance bridge
to the limits of its specifications.
Outstanding Features
> Any capacitance value in the
range from 0.1 pF to 115 pF may
be ordered.
> Stability of larger capacitors is
better than 0.3 ppm/year.
> Temperature coefficient of the
capacitance with respect to changes
in ambient temperature is less than
0.01 ppm/°C.
> Hysteresis resulting from
temperature cycling is less than
0.05 ppm.
> Hysteresis resulting from
mechanical shock is less than
0.05 ppm.
> AC voltage coefficient is less than
0.003 ppm/volt.
> DC voltage coefficient is less than
0.0001 ppm/volt.
> Power line sensitivity is less than
0.0003 ppm per 1% change in power
line voltage.
> Dissipation factor is less than
0.000 003 tan delta.
> Three year warranty
> The user-selected capacitance
value is set at the factory to a NIST
traceable accuracy of 2 ppm at 1 kHz.
> The built-in precision oven in each
AH 11A uses a dual temperature
sensor system which provides
increased reliability and confidence.
> The AH 1100 frame provides
monitoring of critical temperature
control parameters such as the
differences within the dual
temperature sensors in each
standard.
> Each AH 11A standard can be
easily removed from the AH 1100
frame. Their small size and light
weight make them easy to ship for
calibration.
> Shipping is simple since
continuous temperature control of
the ovens is not needed to maintain
the stability specification.
> The fused-silica element is
hermetically sealed in dry nitrogen.
> Three-terminal BNC connections
minimize connector costs and
number of cables.
The AH 11A standard
Features:
User-Selected Values
AH 11A capacitance standards can
be ordered with any value from
below 1 pF up to 115 pF.
Furthermore, if the application for
which the original value was
purchased becomes obsolete, the
AH 11A can be returned to the
factory and set to a totally new value
for a nominal cost.
Traditionally, capacitance values for
transfer of higher echelon
calibration values have been chosen
to be several parts per million above
10, 100 and 1000 pF. The AH 11A
can be ordered with values such as
these for 10 and 100 pF. For
applications requiring calibration of
an AH 2500A capacitance bridge,
values near 100 pF are preferred to
those near 10 pF. In fact, for
calibration of an AH 2500A at a
single value, Andeen-Hagerling
recommends using an AH 11A
standard having a value of
99.99950 pF. This is 5 ppm below
100 pF. Values slightly below 10,
100, or 1000 are preferred to those
above since this allows the
capacitance bridge to most
conveniently display an additional
digit. Otherwise, the exact choice
of values should be based on
convention, personal preference,
and standardization among groups
that are exchanging calibration
values.
For more information,
see the manufacturer's site:
www.andeen-hagerling.com/ ah11a.htm
View other products:
www.andeen-hagerling.com
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