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High-Precision Resistance Decade and Calibrator
Model 1408
Model 1409
Model 1406
Model 1407
Model 1405

 

Range . . . . . . . . . . . . . 1406 / 08 10  mOhm .... to 100  kOhm
1407 / 08 100  mOhm .... to MOhm
1405 10 

mOhm .... to > 3  kOhm
Accuracy . . . . . . . . . . . 1408 / 09 0.01 %
1405 / 06 / 07 0.02 %

Temperature coefficient . 1408 / 09 <= 2 ppm/K
1405 / 06 / 07 <= 10 ppm/K

Stability . . . . . . . . . . . . < 0.01 % resp. < 0.02 % over years
Application

The range of application for the high-precision resistance decades type 1408 and 1409 stretches from reference standard for precision measurements up to simulation of a host of measuring transducers.

The field of application of the precision decade type 1406/07 reaches from general precision measuring to simulation of a variety of measuring transducers, such as for example strain gauge transducers, resistance thermometers, hygrometers and others.

The type 1405 tests and calibrates quickly and easily displays, in control and process technology which is working on a resistance thermometer basis.

Description

The decade resistors are wire-wound resistors and consist of low-capacity and low-conductivity wire coiling made of ZERANIN® resp. MANGANIN® .

An especially developed precision stepping switch with high-quality contact materials and optimal brush construction guarantees very good reproducibility. The high-precision resistance decades types 1408/09 are designed to meet the highest demands with regard to precision, temperature and long-term stability.

As regards accuracy, stability and reliability, the decades type 1406/07 are designed to meet high-standard requirements.

The design of the decade type 1405 enables its use not only as precision decade resistor but also precision calibrator for all standard commercial thermometers. Two fixed series resistors of 1 k serve the simulation of Pt 1000 and Pt 2000 resistance thermometers. The four connection sockets provide the possibility of simple simulation of resistance thermometers operated in four-wire technology.

Contact: Otto Eckerle +49-7224-645-44 / e-mail: otto.eckerle@burster.de