4304 Four Element – Traveling Standard

  • Battery Backup
  • 1 Ω, 10 kΩ, 1 MΩ & 100 MΩ Values
  • Custom Values Available
  • Stability < 2 x 10-6/year
  • Temperature coefficient < 0.005 x 10-6
  • Temperature regulation ±0.01 °C/year
  • Other values available upon request
  • Eliminates oil bath requirement
Features & Benefits

The Model 4304, a four-element resistance standard is the latest development from Measurements Internationals’ series of DC resistors and shunts. After many years of research in resistance materials, the Model 4304 insures that you get the best performance on the market today. Combined with MI’s experience in automated resistance measurements the 4304 is used as a mobile temperature controlled, 4-element working resistance reference.

The four-resistance elements; 1, 10K, 1M, & 100M ohms have excellent stability and extremely low temperature coefficients and are all packaged in a portable unit. Each output resistance element is accessible from front of the unit with four terminal binding posts suitable for easy termination with spade lugs or wires. The resistor elements are maintained at 30 degrees Celsius, with an operating environment temperature range extending from 20 to 26 degrees Celsius. An internal battery backup will maintain the temperature for up to 140 hours under normal transportation conditions.

Specifications
Nominal
Resistance
(ohms)
Nominal
Resistance
tolerance
(+/- ppm)
Calibration
Uncertainty
(+/- ppm)
24 Hour
Stability
(+/- ppm)
12 Month
Stability
(+/- ppm)
Temperature
Coefficient
(+/- ppm/°C)
Max.
Voltage
(Volts)
100 MΩ 50 18 3.2 25 0.025 1000
1 MΩ 25 5 0.8 5 0.005 320
10 kΩ 10 0.2 0.25 5 0.005 32
1 Ω 10 0.2 0.25 5 0.005 0.32
Temperature Regulation +/- 0.01 °C over a 1 year period
Ambient Temperature Range 23 °C +/-3 °C
Ambient Humidity Range 20 to 50% RH
Warranty Standard 1 year Parts & Labor

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