2793 Decade Resistance Boxes

2793 Decade Resistance Boxes

Supplier
Yokogawa
Part Number
2793 Decade Resistance Boxes
Category
Other
Origin
China

The 2793 Decade Resistance Boxes are high-accuracy, stable DC variable resistors with six dials, available in two styles: 279301 for medium resistance and 279303 for high resistance. These devices are ideal for calibration of resistance thermometers, insulation resistance testers, and bridges.

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Overview

The 2793 Decade Resistance Boxes are high-accuracy, stable DC variable resistors with six dials, available in two styles: 279301 for medium resistance and 279303 for high resistance. These devices are ideal for calibration of resistance thermometers, insulation resistance testers, and bridges.

Specifications

ParameterValue
Model279301, 279303
Resistance Range 2793010.100Ω to 1,111,210Ω (Minimum resistance is 0.100Ω)
Resistance Range 2793030 to 111.110MΩ
Dial Composition 2793010.001Ω×10+0.01Ω×10+0.1Ω×10+1Ω×10+10Ω×10+100Ω×10
Dial Composition 279303100Ω×10+1kΩ×10+10kΩ×10+100kΩ×10+1MΩ×10+10MΩ×10
Resolution0.001Ω
Accuracy 279301±0.01%±2mΩ at temperature 23±2°C, humidity 45 to 75%, and 0.1W power application
Accuracy 279303100Ω to 1kΩ steps: ±0.02% 10kΩ to 100kΩ steps: ±0.05% 1MΩ and 10MΩ steps: ±0.1%
Max Allowable Input Power 2793010.25W/step, Within 1W for overall instrument
Max Allowable Input Power 279303100Ω step: 100mA 1kΩ step: 30mA 10kΩ step: 10mA 100kΩ step: 2mA 1MΩ step: 200μA 10MΩ step: 20μA
Temperature Coefficient 279301α23=-5 to +10×10^-6/°C β=-0.3 to -0.7×10^-6/°C
Temperature Coefficient 279303100Ω, 1kΩ steps: α23=-2 to +20×10^-6/°C β=-0.3 to -0.7×10^-6/°C 10kΩ, 100kΩ, 1MΩ, 10MΩ steps: α23=+30×10^-6/°C β=-0.1×10^-6/°C
Insulation ResistanceMore than 500MΩ at 500VDC between panel and circuit
Dielectric Strength 2793011,000VAC for one minute between panel and circuit
Dielectric Strength 2793032,500VAC for one minute between panel and circuit
External Dimensions116×497×140mm
Weight 2793014.8kg
Weight 2793035.0kg

Applications

1. Calibration of resistance thermometers 2. Calibration of insulation resistance testers 3. Calibration of bridges

Key Features

1. High accuracy and stability 2. High reproducibility 3. Excellent shock and vibration resistance 4. Easy-to-read in-line indication 5. Best suited for calibration of resistance thermometers and bridges

Datasheet

Product Datasheet
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Supplier Information

Yo
Yokogawa
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<p>Yokogawa was founded in 1915 and has more than 6,000 test and measurement instrument patents. It focuses on developing and providing the best test and measurement solutions. Yokogawa Measurement Technology (Shanghai) Co., Ltd. ensures the excellent quality of the brand and contributes to the growth of China's industry.</p>

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