Fluke 732A DC Reference Standard 3 ppm Stability

Description

Fluke 732A DC Reference Standard. Condition is "Used".
Batteries replaced Nov 20.
Unit taken out of storage, Output well within specifications when checked with recently calibrated HP 3458A. (4 ppm uncertainty)
Measured output would even be within Fluke 732B specifications of +/- 2 ppm. — as shown in pictures
Warranty:  30-day ROR
accessories:  power cord
From Mfr, Specs':
Features:
10 V, 1 V, and 1.018 V outputs
Stability (1 year):
10V output: +/- 3 ppm (0.5 ppm/month)
1.018V, 1V output: +/- 12 ppm (1.5 ppm/month)
18°C to 28°C operation at full accuracy specs
Short circuit proof
Line and rechargeable battery powered
12-hour battery life for calibration transfer
The Fluke 732A is a solid state, DC reference standard which provides significant performance improvements in stability, ruggedness, and transportability. Its 10V output offers better resolution, lower noise, and simpler operation than standard cells. The 732A also includes outputs of 1.0 and 1.018 volts.
The accuracy and stability of the 732A allows direct substitution for saturated standard cells in many applications. Its stability of 0.5 ppm for 30 days provides the confidence necessary to calibrate high-performance instruments. In addition, the use of the 10V output as a primary reference standard means that the effects of thermal emfs and noise are reduced.
The 732A can be shorted, even for extended periods of time, without damage and recovers without loss of stability. The unit may be powered by line voltage or will operate 12 hours on its internal battery-even longer on external batteries. Either line power or the battery may be removed without affecting the output.
Saturated standard cells are fragile and susceptible to shock and vibration during traveling. The 732A was designed for air or ground shipment with no special handling.
The internal oven has high thermal gain allowing full accuracy to be specified over an operating range of 23°C ±5°C. Therefore, this reference standard may be used outside of the conventional standards laboratory environment in areas where saturated cells or other transfer standards would not be reliable.