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(Full specifications can be found on datasheet)
4 standard models with resistance values of 1 kΩ & 10 kΩ
Custom resistance values, like 8 kΩ or 100 kΩ are available
Precision resistors throughout
Solid silver-alloy switch contacts
Specifications for esi DP1211 Dekapot Decade Potentiometer
Terminal Linearity: Initial: ±15 ppm + 0.5 dial division Long-term: ±20 ppm + 0.5 dial division *Mid-scale rating. Improves near end-scale settings.
Coefficients of Linearity: Temperature: ±2 ppm/ºC Power: ±30 ppm/W for 1 kΩ, ±10 ppm/W for 10 kΩ
Calibration Conditions: 23 ºC, low input power
Number of Decades: Two, plus 100-division potentiometer
Resolution: 0.003 %
Input Resistance: 1, 10 kΩ (accuracy ±0.01%)
Maximum Input Power: 5 W continuous, 10 W intermittent
Breakdown Voltage: 750 V rms to case
Dimensions Diameter: 7.6 cm (3 in) Depth 18.3 cm (7.2 in) Depth (behind panel) 15 cm (5.9 in) Weight 772 gm (1.7 lb)
esi DP1311 Dekapot Decade Potentiometer
Specifications for the DP1311 are the same as for the DP1211 except for the following:
Number of Decades Three, plus 100-division potentiometer
Resolution 0.0003 %
Dimensions Diameter 3 in (7.6 cm) Depth 8.5 in (21.6 cm) Depth (behind panel) 6.9 in (17.6 cm) Weight 1 kg (2.1 lb)
The esi DP1211 & esi DP1311 potentiometers are precision decade resistive voltage dividers featuring the accuracy, high resolution and constant input impedance of the Kelvin-Varley circuit. They provide known voltage and current ratios for meter calibration, linearity checking, ratio measuring, synchro testing, computer standardization, and many other DC and audio frequency applications.
The stacked dial configuration conserves space without sacrificing operating ease. Each unit occupies less than 45.2 square centimeters of panel space. Convenient in-line reading is provided by the esi Dekadial coaxial dial
The esi DP1211 offers two decades plus a 100 division potentiometer. The esi DP1311 offers three decades plus a 100 division potentiometer.
Exceptional stability and reliability are assured by the use of precision resistive elements. The ceramic switch decks are silicone-treated to improve insulation resistance, and the multiple switch contacts are of solid silver-alloy for long life and low contact resistance
