La description

Model 2793 resistance box is high-accuracy, stable DC variable resistor with 6 dials and is available in two styles: 279301 for medium resistance from 0.1 to 1,111.210 &Omega, in 1 m&Omega, steps (best suited for calibration of resistance thermometers or bridges), 279303 for high resistance from 0 to 111.1110 M&Omega, in 100 &Omega, steps (suitable for calibration of insulation resistance testers or bridges). High accuracy and stability High reproducibility Excellent reproducibility is obtainable because dial switches with low contact resistance are used. For example, changes in contact resistance is within ± 1.1m&Omega, at 0.1&Omega, setting. 1 m&Omega, resolution Simple, quick dial operation In-line display for city reading Ideal for calibration of resistance thermometers and brides Due to its high accuracy and a dial system, various types of resistance thermometers and bridges can be calibrated accurately and promptly. Excellent anti shock and -vibration properties
Specifications
Dielectric Strength 1,000 V AC for one minute between Panel and Circuit
Insulation Resistance More than 500M&Omega, at 500V DC between panel and circuit
Dimension 497(W)?116(H)?140(D)mm, excluding protrusions 19.57 x 4.57 x 5.51 in.
Weight Approx. 4.8kg 10.6 lbs
Resistance Range 0.1m&Omega, to 1,111.2100&Omega, (minimum resistance is 0.1&Omega,)
Dial Composition 0.001&Omega, x 10 + 0.01&Omega, x 10 + 0.1&Omega, x 11 + 1&Omega, x 10 + 10&Omega, x 10 + 100&Omega, x 10
Resolution 1m&Omega,
Accuracy ±(0.01&Omega, + 2m&Omega,) at temperature of 23 ±2°C, humidity of 45 to 85%, and 0.1W Power Application
Max. Allowable Input Power 0.2SW/slep. Within 1W for overall instrument.
Max. Allowable Input Current 50mA (100&Omega, steps), 150mA (10&Omega, steps), 500mA (10 &Omega, steps) and 1.5A (0.1&Omega, steps)
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