High performance, precision and stability at an affordable price - these are the key elements that characterize the wekomm resistors of the EVO9050A series. These standard resistors are the result of many years of research and development.
The resistive elements are based on the ARR modules' adjustable reference resistances, which allow a specific target value to be reached with sub-ppm precision along with reference stability. No compromises are made when it comes to quality or the components used. The terminals are made of copper tellurium for low thermal effects and gold plated for best electrical contact. A robust aluminum housing protects the standard resistor from harsh environmental conditions and offers maximum mechanical stability. Each resistance standard is supplied with a calibration certificate, an ISO 17025 accredited calibration is also available on request.
The EVO9050A series is divided into two ranges, the standard range covers the decade values, the extended range allows to cover a wide range of non-standard values. The EVO9050A series is the perfect workhorse for everyday use in laboratory and calibration applications.
Areas of application:
- Transmission standards
- Working standards
- Reference resistors
- calibration
Product features:
- Mechanically robust and stable
- No special requirements for operating temperatures
- No oil bath required
- Long term stability better 1ppm/year
- Little influence from temperature hysteresis
- Temperature stability typically better than 1 ppm/°C
- Operating range from 20°C to 30°C
- Low costs
- Made in Germany