734A Voltage Reference & DC Voltage Standard

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Product overview: 734A Voltage Reference & DC Voltage Standard

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Independence

The 734A is the only standard of its type offering complete mechanical and electrical independence of each of its four standards.

Small, portable, and rugged

Each standard is small, light and rugged, ideal for shipment. The long 72-hour battery life allows the 732B to be shipped over long distances under power. An optional external battery and charger extends battery life still further, to more than 130 hours.

The 732B can stand up to a lot of abuse. The inputs can be shorted indefinitely and are protected up to 1100V dc, 25 mA, without damaging the cell or affecting its output.

Confidence

The 732B is based on the proven technology of the 732A, the first standards lab quality electronic reference to gain acceptance as a replacement for saturated standard cells. Originally designed for internal transfers of the Fluke Calibration corporate volt to the production floor, thousands are now in service world-wide in a variety of applications -- from maintaining an institutional reference to transferring values from national labs or privately-operated 10V Josephson Arrays.

Stability

Stability for each output is ±2 ppm per year (10V) and ±0.8 ppm per month (1.018V). Each 10V output can drive up to 12 mA of current to simplify use with instrumentation - like the 5700A - with low output impedance.

With the 734A, it is remarkably easy to establish a fractional part-per-million voltage reference in your laboratory. Over time, with frequent intercomparisons of the four cells, and regular calibrations of one or more cells, you can reduce the uncertainty of your 734A by a factor of 3 or more.

Support for artifact calibration

Combined with the 742A-1 and 742A-10k Resistance Standards, a single 732B makes a tough and compact artifact calibration support package for instruments like the 5700A/5720A Calibrators from Fluke Calibration or the 3458A Multimeter from Hewlett-Packard.

Specifications: 734A Voltage Reference & DC Voltage Standard

Output
10V30 Day Specification:    ± 0.3 ppm
1 Year Specification:    ± 2.0 ppm
1.018V30 Day Specification:    ± 0.8 ppm
1 Year Specification:    n/a
General Specifications
Temperature15°C to 35°C, operating; -51°C to 71°C, non-operating (with internal battery pack switched off)
Relative Humidity<95% to 30°C, <75% to 35°C, non-condensing
Altitude<3049m (10,000 ft) operating, <12,195m (40,000 ft) non-operating
VibrationPer MIL-T-28800; Type III, Class 5, Style E
SafetyDesigned to IEC 348, 2nd edition; 1978 and ANSI/ISA-S82; and UL1244, 2nd edition 1980, CSA C22.2 No 231, and IEC 1010
Calibration DocumentationReports of Calibration are optional
Size734A DC Reference Standard:  17.8 cm H x 43.2 cm W x 50.3 cm D (7 in H x 17 in W x 19.8 in D) (with handles)
732B DC Standard:    13.4 cm H x 9.8 cm W x 40.6 cm D (5.28 in H x 3.86 in W x 15.98 in D)
732B-7001 External Battery and Charger:  13.4 cm H x 9.8 cm W x 40.6 cm D (5.28 in H x 3.86 in W x 15.98 in D)
Weight734A DC Reference Standard:  29 kg (65 lbs.)
732B DC Standard:    5.91 kg (13 lbs.)
732B-7001 External Battery and Charger:  5.45 kg (12 lbs.)
Power, battery life732B DC Standard:    100V, 120V, 220V, 240V ac ± 10%; 50 Hz to 60 Hz; 66W max. Internal 12V lead acid, gelled electrolyte battery operates for 70 hours at 23°C when fully charged. Trickle-charged continually when external ac power is applied.
732B-7001 External Battery and Charger:  100V, 120V, 220V, 240V ac ± 10%; 50 Hz to 60 Hz; 66W max. Internal 12V lead acid, gelled electrolyte battery operates for 70 hours at 23°C when fully charged. Trickle-charged continually when external ac power is applied.

Models: 734A Voltage Reference & DC Voltage Standard

734A
Reference Standard. Includes four 732Bs in a rack-width enclosure. Calibration of each 732B output optional. See Direct Voltage Maintenance Program.

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