6-decade resistance boxes - High accuracy: 0.01% ZX series of 6 decade boxes are very high accuracy and stable six-dial instruments. They are designed for accurate and reliable applications in laboratories or onsite use as resistance thermometer simulation. There are 6 models in the series with a maximum resistance of 111,111,100 Ω.

Description ZX series of 6 decade boxes are very high accuracy and stable six-dial instruments. They are designed for accurate and reliable applications in laboratories or onsite use as resistance thermometer simulation. There are 6 models in the series with a maximum resistance of 111,111,100 Ω. The resistive elements are non-inductively wound on high quality formers using a resistance wire of specially selected alloy. Each resistive element is heat treated and undergoes a controlled ageing process to produce the very highest stability and also a low temperature coefficient. Switches are of...

Specifications Resistance generation Type Total resist ance Dials available Direct reading of generated value Minimum value: - ZX74 model: 0.1 Ω - Other models: < 20 mΩ Accuracy at 20°C ±2ºC: - ZX74 / ZX75 / ZX76 models: (0.01% + 0.002 Ω) - ZX77 / ZX83 / ZX84 models: (0.05%+ 0.002 Ω) Insulation resistance: > 1000 MΩ at 1000 V Temperature coefficient: -5 to +10 ppm/ºC Maximum admissible voltage on terminals: 30 V~ RMS or 50 V- according to IEC 61010-1 Maximum power: 0.2 W General specifications Size

Environmental specifications Reference range Operating reference range

Models and accessories Instrument: RD6D-ZX74 COFRAC certificate of calibration Packing information: Shipping size