Barletta Apparecchi Scientifici Srl
RBB
Resistance Decade 0.05%

CROPICO RBB Resistance Decade



RBB Data Sheet
Click to view in PDF format  (49KB)
  • 4, 5 and 6 Decades Available

  • Total Range 11.111 MΩ

  • Smallest Steps 0.001Ω

  • Special Waidner Wolff Decade Minimises Switch Contact Resistance

  • Accuracy 0.05% for premium dials

  • Resistance Coils Wound in Selected Low TC Wire

  • Special Models for Pt100 Simulation

  • Special Model for Insulation Simulation



Combining high quality, long life and permanence of calibration, the RBB Series offers an unbeatable selection of models. The reliability is built in as we use our own designed and manufactured switches combined with high quality wire wound resistors. All units are supplied complete with certificate of conformity and all measurements are of course traceable to International Standards.

Special models are available for temperature (Pt100) and insulation resistance simulation.


RBB Technical Specifications

 Model 

Number
of Decades

Total Resistance

Resolution

Residual Resistance

Size

Weight

RBB4-A

4

1,111 Ω

0.1 Ω

0.01 Ω

310x100x140

2.7 kg

RBB4-B

4

11,110 Ω

1 Ω

0.01 Ω

"

"

RBB4-C

4

111,100 Ω

10 Ω

0.01 Ω

"

"

RBB5-B

5

1,112.1 Ω

0.01 Ω

1 Ω

384x100x140

3.4 kg

RBB5-C

5

11,111 Ω

0.1 Ω

0.012 Ω

"

"

RBB5-D

5

111,110 Ω

1 Ω

0.012 Ω

"

"

RBB5-E

5

1.1111 MΩ

10 Ω

0.012 Ω

"

"

RBB5-F

5

11.111 MΩ

100 Ω

0.012 Ω

"

"

RBB6-B

6

1,112.11 Ω

0.001 Ω

1 Ω

450x100x140

3.85 kg

RBB6-C

6

11,112.1 Ω

0.01 Ω

1 Ω

"

"

RBB6-D

6

111,111 Ω

0.1 Ω

0.013 Ω

"

"

RBB6-E

6

1.11111 MΩ

1 Ω

0.013 Ω

"

"

RBB6-F

6

11.1111 MΩ

10 Ω

0.013 Ω

"

"



ACCURACY

Decade (Ohms)

Accuracy of Adjustment Incremental Steps

Power Rating

Temperature Coefficient

10 x 1 MΩ

0.1%

0.5 W

10 ppm/C

10 x 100 kΩ

0.1%

0.5 W

10 ppm/C

10 x 10 kΩ

0.05%

0.33 W

3 ppm/C

10 x 1 kΩ

0.05%

0.33 W

3 ppm/C

10 x 100 Ω

0.05%

0.33 W

3 ppm/C

10 x 10 Ω

0.05%

0.33 W

3 ppm/C

10 x 1 Ω

0.2%

0.33 W

3 ppm/C

10 x 0.1 Ω

0.5%

0.75 W

10 ppm/C

10 x 0.01 Ω

1%

0.75 W

10 ppm/C

10 x 0.001 Ω

2%

0.75 W

10 ppm/C

10 x 0.0001 Ω

10%

0.75 W

10 ppm/C