Fluke 752A Reference Divider

  • Precision 10:1 and 100:1 dividers primarily designed for comparing direct voltage levels to a 10V voltage reference standard.
  • Internal switching allows for calibration of different voltage ranges with a 10V standard without the need to change connections.
  • Self-calibration procedures enable compensation for long-term changes in the value of the divider resistors by switching their positions in various Wheatstone bridge configurations

Description

The Fluke 752A is a pinnacle of precision in the world of DC voltage calibration. This high-accuracy reference divider plays a crucial role in establishing and maintaining the integrity of voltage measurements within metrology laboratories.

Key Features:

  • Precision 10:1 and 100:1 dividers primarily designed for comparing direct voltage levels to a 10V voltage reference standard.
  • Internal switching allows for calibration of different voltage ranges with a 10V standard without the need to change connections.
  • Self-calibration procedures enable compensation for long-term changes in the value of the divider resistors by switching their positions in various Wheatstone bridge configurations
  • Unparalleled Accuracy:
    • Delivers exceptional accuracy with division ratios of 10:1 and 100:1, ensuring highly precise voltage division.
    • These ratios are achieved with incredibly low uncertainties, minimizing errors in voltage comparisons.
  • Ease of Use and Versatility:
    • Designed with user-friendliness in mind, simplifying the calibration process and minimizing operator intervention.
    • Its versatility allows for its use in a wide range of calibration applications, making it an invaluable asset in metrology laboratories.

Applications:

  • Calibrating DC Voltage Sources and Standards:
  • Serves as a fundamental tool for calibrating high-accuracy DC voltage sources, ensuring the accuracy of their output voltages.
  • Verifying the Accuracy of Digital Voltmeters (DVMs):
  • Plays a critical role in verifying the accuracy of digital voltmeters, ensuring their reliable performance in various measurement scenarios.
  • Supporting Advanced Metrology Research:
  • Contributes significantly to research and development in metrology, enabling advancements in the field of electrical measurements.

The Fluke 752A is more than just a divider; it’s a cornerstone of accurate voltage measurements. By providing an exceptionally precise and reliable means of voltage division, it empowers metrology laboratories to achieve the highest levels of accuracy in their voltage calibrations, ultimately contributing to advancements in science and technology.

Additional information

Brand

Fluke Calibration

Specifications: 752A Reference Divider

Division Ratio
Division Ratio 10:1 ±0.2 ppm Input :0V to 100V
Division Ratio 100:1 ±0.5 ppm Input :0V to 1000V
General Specifications *
Ratio Ranges 10:1 and 100:1
Ratio Uncertainty Ratio accuracies that apply for a temperature variation of less than ± 1°C from the self-calibration temperature (between 18°C and 28°C) for up to 8 hours following self-calibration:
——–
Range 10:0: Input Voltage: 0 to 100V
Output Uncertainty: 0.2 ppm
Null Accuracy: ±0.5 mV**
——–
Range 100:1: Input Voltage: 0 to 1000V
Output Uncertainty: 0.5 ppm
Null Accuracy: ±1.0 mV**
Temperature Coefficient £ ± 1 ppm per °C over range of 18°C to 28°C (typically 0.1 ppm per °C from 15°C to 30°C
Input Resistance 10:1 Ratio:380 kΩ ± 1%
100:1 Ratio:Divider is 4 MΩ; Driven Guard is 4 MΩ; total is 2 MΩ ± 1%
Maximum Input Voltage 200V for the 10:1 ratio
1100V for the 100:1 ratio
Power Coefficient £ 0.05 ppm of output with 100V applied for 10:1 ratio and £ 0.3 ppm of output with 1000V applied for 100:1 ratio (included in the ratio accuracy specifications)
Temperature 0°C to 50°C, operating; -40°C to 75°C non-operating
Relative Humidity £ 75% to 40°C, £ 45% to 50°C, non-condensing, operating; £ 100% 10-50°C, non-operating
Altitude £ 3050m (10,000 ft) operating;£ 12,220m (40,000 ft) non-operating
Vibration Per MIL-T-28800C, Type III, Class 5, Style E
Safety IEC 348, 2nd edition, 1978; ANSI-C39.5, 1980, CSA 556B, and UL 1244
Calibration Documentation Statement of calibration practices included; performance check optional
Size 19.1 cm H x 22.1 cm W x 60.3 cm L (7.53 in H x 8.69 in W x 23.75 in L)
Weight  8.4 kg (18.5 lbs.)

*Specifications apply for the lifetime of the instrument over the temperature range of 18°C to 28°C.
**Null accuracy refers to the required accuracy of the null detector reading during self-calibration.

 

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