66252 AUTO SWITCH

• Allows System Resistance Standard to be used as Resistance Source
• Available in Bench Configurations (No Modification to 6625AF System)
• Usable Resistance Range 1Ω to 100 MΩ
• Input Impedance >1014
• Includes Scanner Low Thermal Short
• Includes Lead Compensation Procedures for Low Resistance Connection to Long Scale DMM’s.
• Wide Operating Range 18°C to 28°C

• The 66252 Auto Switch is a unique, field installable option for Guildline's Resistance Measurement Systems. Allows the use of your 6625 system resistance standards for both measurement and source applications without having to disconnect and reconnect wires. This option allows operators new flexibility when using the 6625A Measurement System. For example, the Guildline Model 6634A Temperature Stabilized Resistance Standard, with up to 10 available Resistance Standards, is typically hard-wired on 10 channels of the 6664 Series Scanners. It is normally difficult or time consuming to remove all the cabling and wires if an operator simply wants to use the Resistance Standards as a source for items such as artifact calibrations, high accuracy DMM’s and other metrology calibrations.

Calibration Laboratories,
National Measurement Institutes
Power Generation
Instrument Manufacturers

• 66252 datasheet (458K)