Electric resistance standard AR-1270A/B

The Model AR-1270 builds upon the AR-1250 by incorporating an integrated temperature control (constant temperature) device. It is equipped with a low-noise, DC 12-volt power supply capable of simultaneously powering up to eight standard resistors and indicating their operational status. The temperature control unit itself utilizes a low-noise fan for heat dissipation and features a 4 mm diameter temperature measurement port for convenient monitoring of the internal oil temperature and the status of the temperature control via an indicator light. The binding posts are machined from low-thermal-emf tellurium copper and offer standard 4mm plug/pressure connection terminals for leads. - Nominal Value: 1Ω, 10Ω, 25Ω, 100Ω, 1KΩ, 10KΩ, 100KΩ, 1MΩ - Operating Temperature: 28°C - Storage Temperature: 0°C ~ 45°C - Calibration Temperature: 28°C (Constant Temperature) ±0.5°C - Annual Stability: 1Ω, 10Ω: ±3ppm(A)/±6ppm(B); 25Ω, 10KΩ: ±1.5ppm(A)/±3ppm(B); 100KΩ, 1MΩ: ±3ppm(A)/±6ppm(B) - Temperature Coefficient: ±0ppm/°C, 28°C (Constant Temperature) - Max. Power Consumption: 1W - Power Supply: DC12V, 1.2A (Low Noise) - Dimensions: 130mm (5.1") x 105mm (4.1") x 82mm (3.2") - Net Weight: Approximately 1 kg (2.2 lb)