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RESISTOR STANDARDS |
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RR
Standard reference Resistors. Accuracy
+/- 0.01% or better. |
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RR Standard
Resistors.
RR Standard Resistors series of 4 wire reference resistors offer high
accuracy and stability at an economic cost.
Designed specifically for
use as a comparison standard for resistance thermometry on the ASL range
of AC resistance bridges, the RR series may also be used in electrical
standards laboratories.
In addition to standard fixed values, resistors can be supplied in any
value between 1 and 1000 Ohms. Typical applications for the RR series
are as transfer standards or reference source in temperature calibration
or electrical standards laboratories
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High Accuracy, ± 0.01% or better
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Excellent long term stability
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Low temperature coefficient
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Rugged stainless steel construction
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4mm insulated terminals with optional
BNC adaptors
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Specification |
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| Tolerance |
1 to 10 Ohms
±0.005% (50ppm)
>10 to 100 Ohms
±0.0025% (25ppm)
>100 to 1000 Ohms
±0.001% (10ppm) |
| Test certificate |
±5ppm |
| Optional calibration |
Up to ±0.1ppm |
| Stability |
<±5ppm per year |
| Temperature coefficient |
<1ppm per °C |
| Frequency dependence |
Typically <1ppm (<0.25mK), up to
400Hz |
| Working temperature |
20°C, but within the range of 15°C
to 40°C |
| Connection type |
Full 4 wire to 4mm insulated
terminals, plus earth connection to case. |
| Dimensions / weight |
Diameter: 76.2mm, Height: 90mm,
Weight: 1kg. |
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ORDER CODES
RRx where x is 1, 10, 25, 100, 300 or 1000 ohms. Other values
available.
BNC/ADAP Adaptor for converting 4mm insulated terminals to BNC
socket (2 req'd)
CAL-RES-A Optional UKAS calibration d.c. @ 20°C
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