<< Yokogawa Decade Resistance Boxes Index

Yokogawa 278610 and 298620
Decade Resistance Boxes

Accuracy: ±0.01% rdg or more
Low temperature coefficient

Yokogawa 2786 Series
Shown

Product Information
Datasheet	2.4 MB
Ordering Info
PDF Help

Models 278610 and 278620 six-dial decade resistance boxes allow quick and easy setting of a wide range of resistance. These resistance boxes are used in combination with voltage or current standards to adjust voltage or current, as dummy load resistances or as an arm of AC bridges.

Specifications	278610	278620
Resistance Range (Six decade dials)	0.1 to 111,111Ω	1 to 111,111Ω
Residual Residence	Less then 23mΩ
Power Rating	0.3W/Step, Within 3W for overall instrument
Maximum Allowed Input	0.5W/Step, 5W for Overall Instrument
Maximum Circuit Voltage	250V
Operating Temperature Range	0 to 40°C ( 32 to 104°C)
Storage Temperature Range	-10 to 50°C (14 to 122°F)
Humidity Range	25 to 85% relative humidity
Insulation Resistance	More than 500MΩ at 500V DC between panel and circuit
Dielectric Strength	1,500 V AC for one minute
Dimensions	116 x 497 x 120mm (4 5/8 x 19 5/8 x 4 3/4")
Weight	7.76lbs (3.5kg)

	Accuracy	Temperature Coefficient		Reference Data
Step	Accuracy	α₂₀ (x10^-6/°C²)	β(x10^-6/°C²)	Current Rating	Max. Allowable Input Current
0.1Ω	±2	±250	-0.4 to -0.8	1.7A	2.2A
1Ω	±0.5	±100		550mA	710mA
10Ω	±0.1	±20		170mA	220mA
100Ω	±0.05	±10		55mA	71mA
1kΩ	±0.05	±10		17mA	22mA
10kΩ	±0.1	±50	±0.1	5.5nA	7.1mA (10kΩ to 30kΩ)
10kΩ				5.5nA	250V(40kΩ to 100kΩ)
100kΩ				250V (200kΩ to 1MΩ)	250V
100kΩ				1.7mA (100kΩ)	250V

Ordering Information
Model	Description	Buy Online	Price
279301	Yokogawa 279301 Decade Resistance Box, 1 M ohm		$3,770.00
279303	Yokogawa 279303 Decade Resistance Box, 100 M ohm		$5,240.00
Included Accessories
	1 - Test Certificate	Included

Yokogawa 278610 and 298620 Decade Resistance Boxes

Yokogawa 278610 and 298620
Decade Resistance Boxes