Seaward RBB5-B Cropico Resistance Standards & Decades

Name: Seaward RBB5-B Cropico Resistance Standards & Decades
Brand: Seaward
SKU: SeawardRBB5-B
Price: 1195.00 USD
Availability: InStock

0 reviews | Catalog: 930171 | Model: Seaward RBB5-B

Saeward RBB Series High Accurancy Decade Boxes with Versatile Wide OHM Range

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Resistance Decade Box RBB5-B

RBB5-B High Accuracy 0.05 Decade Box
5 and 6 decades available
Total Range 11.111 Mega ohm
Smallest Steps 0.001 milli ohm
Accuracy 0.05% for premium dials
Resistance coils wound in selected low TC wire
Special models for Pt100 simulation
Special Waidner Wolff decade minimises switch contact resistance
Special model for insulation simulation

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Items in This Series



Product	Seaward RBB5-B Resistance Decade Box RBB5-B	Seaward RBB5-D Resistance Decade Box RBB5-D	Seaward RBB6-E Resistance Decade Box RBB6-E	Seaward RBB5-C Resistance Decade Box RBB5-C	Seaward RBB5-E Resistance Decade Box RBB5-E	Seaward RBB6-B Resistance Decade Box RBB6-B	Seaward RBB6-F Resistance Decade Box RBB6-F	Seaward RBB6-D Resistance Decade Box RBB6-D	Seaward RBB6-C Resistance Decade Box RBB6-C
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Seaward RBB5-B - Cropico Resistance Standards & Decades

5 and 6 decades available
Total Range 11.111 Mega ohm
Smallest Steps 0.001 milli ohm
Accuracy 0.05% for premium dials

RBB High Accuracy Decade Boxes

A versatile range of resistance decade boxes, available in 5 & 6 decades. Both high accuracy and a wide range, 0.001 ohm to 11 mega ohm, are combined in a rugged case. The switches used are gold plated to ensure a low contact resistance and negligible thermal E.M.F. Some models employ the Waidner Wolf technique to eliminate the errors that may be caused by the variations in switch contact resistance. These models are particularly suited to applications such as Pt100 simulation where resolutions as low as 0.001 ohm (» 0.0025°C) are required.

THE RBB SERIES
Calibration	Calibration certificates including UKAS traceable are available on request
Switches	Contact material gold plated brass Contact resistance = 5 Mega ohm Insulation Resistance (all paths = 10 giga ohm ) Proof voltage 1kV
Resistors
Temperature Co-efficient:	±3ppm / +20°C to + 85°C ±5ppm maximum over –55°C to +125°C 0.1, 0.01, & 0.001 dials 10ppm/°C
Full Load Stability:	±35ppm/10,000 hours ±50ppm/26,000 hours
No Load Stability:	±25ppm/10,000 hours ±35ppm/26,000 hours
Over full temperature range:	-50°C to +125°C
Power Rating:	0.33 watt (+85°C) 0.25 watt (+110°C)
Maximum Continuous Working Voltage:	Up to 250 V dc
Noise:	Essentially non-measurable <1.5 mV/°C
Thermal E.M.F:	<0.4mV/°C typical
Encapsulation:	Moulded epoxy
Windings:	Exclusive 'air cushioned' technique provides virtually stressless elements for improved performance. Non inductively wound. Direction of winding reversed at half turns point
Weight
RBB5 - 0.5kg RBB6 - 0.6kg
Size
350mm x 100mm x 80mm (W H D) approx (all models)

Resistance Measurement:
RBB5				RBB6					Decade	Accuracy	Current Max mA
B	C	D	E	B	C	D	E	F	Decade	Accuracy	Current Max mA
				•					10 x 0.001 Ω	± 2%	2000
•				•	•				10 x 0.01 Ω	± 1%	2000
•	•			•	•	•			10 x 0.1 Ω	± 0.5%	2000
•	•	•		•	•	•	•		10 x 1 Ω	± 0.2%	600
•	•	•	•	•	•	•	•	•	10 x 10 Ω	± 0.05%	200
•	•	•	•	•	•	•	•	•	10 x 100 Ω	± 0.05%	60
	•	•	•		•	•	•	•	10 x 1k Ω	± 0.05%	20
		•	•			•	•	•	10 x 10k Ω	± 0.05%	6
			•				•	•	10 x 100k Ω	± 0.1%	2
								•	10 x 1M Ω	± 0.1%	0.3

Model	No. Decades	Total Resistance	Resolution	Sutable for Pt100 Simulation	Resolution °C when Simulating Pt100	Residual Resistance Ω
RBB5-B	5	1,112.1 Ω	0.01	•	0.025	1 Ω
RBB5-C	5	11,111 Ω	0.1	-	-	0.012 Ω
RBB5-D	5	111,110 Ω	1	-	-	0.012 Ω
RBB5-E	5	1.1111M Ω	10	-	-	0.012 Ω
RBB5-F	5	11,111 Ω	100	-	-	0.012 Ω
RBB6-B	6	1,112.11 Ω	0.001	•	0.0025	1 Ω
RBB6-C	6	11,112.1 Ω	0.01	-	0.025	1 Ω
RBB6-D	6	111,111 Ω	0.1	-	-	0.013 Ω
RBB6-E	6	1.11111M Ω	1	-	-	0.013 Ω
RBB6-F	6	11.1111M Ω	10	-	-	0.013 Ω

Test Equipment General Attributes
HTS/Schedule B Number	9030.33.3400
Country of Origin	United Kingdom

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Test Equipment General Attributes

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