SRR Series High Accuracy Standard Resistor

SRR High Accuracy Standard Resistors

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Photo represents example of series. See datasheet for more details on any specific model.

  • High accuracy four-terminal standard resistors
  • Resistance Value of: 0.0001 Ω, 0.001 Ω, 0.01 Ω, 0.1 Ω
Prices range from $3895 to $3895

Estimated Delivery is 4 to 12 weeks

Repair/Calibration Quote Technical Support Request

High accuracy four-terminal standard resistors for low values of 0.1 or less. These standards are used for accurate current measurements and for comparisons of low resistances.

  • 4 Values available 0.0001 Ω, 0.001 Ω, 0.01 Ω, 0.1 Ω

Specifications

 

Model

Nominal Value

(Ω)

Adjustment to Nominal Value

Maximum Current

(A)

Air                        Oil

Temperature

Coefficient

(ppm/°C)

Stability typical

(ppm/yr)

SRR-.0001

0.0001

0.02%

100

200

20

25

SRR-.001

0.001

100 ppm

32

60

25

25

SRR-.01

0.01

100 ppm

10

20

5

10

SRR-.1

0.1

30 ppm

3

6

5

10

 

Test Conditions - 25°C in Oil

Model

Nominal Value

(Ω)

Current

(A)

Power

(mW)

SRR-.0001

0.0001

30

90

SRR-.001

0.001

10

100

SRR-.01

0.01

3

90

SRR-.1

0.1

1

100

 

Resistance Elements: 0.1 Ω, bifilar winding on cylindrical brass formers with PTFE insulation. 0.01, 0.001, and 0.0001 ohm resistance material in the form of straight rods or loops supported on 12 mm brass conductors

 

Terminals: Potential - Copper 4 mm

Current - Brass

 

Top Panel: Bakelite marked with the value, class designation and serial number

 

Case: Light alloy, black anodized to give maximum heat radiation

 

Thermometer Tube: Slotted extending the length of the resistance element

 

Label: Each standard is fitted with a label that describes its characteristics and operating parameters

 

Dimensions: 16 cm H x 9 cm Dia (6.3” x 3.55”)

 

Weight: 0.9 kg (2 lbs)

 

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