Description:
The SR1 is a versatile, rugged resistance standard. After inheriting the SR1 series from esi, IET took the opportunity to significantly improve its long-term stability and temperature coefficient. The result is a resistance standard with stability of as low as ±10 ppm/year and a TC as low as 3 ppm/°C.
Model SR1 has been constructed to meet today’s high standards of performance. The resistance wire used is a modern alloy with excellent stability improved further by an extremely low temperature coeffi cient over a wide range of temperatures, and very low thermal EMF to copper -- features that have been further improved by IET Labs.
The durable aluminum case provides electrosta c shielding. Gold-plated, tellurium-copper, low-thermal-emf binding posts reduce connection errors.
Features:
• Versatile, rugged working standard
• Improved long-term accuracy: as low as ±10 ppm/year
• Improved temperature coefficient: as low as 3 ppm/°C
• Available in values from 0.01 Ω to 10 MΩ
Calibration conditions:
At 23°C, low power, traceable to SI
<1 MΩ: 5-terminal
≥1 MΩ: 3-terminal
Terminals:
Gold-plated, tellurium-copper, low-thermalemf binding posts on standard 3/4 inch spacing. A GROUND terminal is provided on all units
Mechanical:
Dimensions: 10.2 cm W x 8.9 cm H x 14.0 cm D (4.0" W x 3.5" H x 5.5" D)
Weight: 0.9 kg(2lbs)
