6600A Dual Source High Resistance Bridge

• Based on proven NMI design
• Automatic and manual operation
• Not affected by temperature change
• Multiple operational modes
• Ratio: 1:1, 10:1, 100:1, 1000:1
• Range: 100 kΩ to 10 PΩ
• Voltages: 1 V to 1000 V (optional 10 000 V)
• Optional 10- and 20-channel coaxial matrix scanners
• Optional environmental and pressure monitoring

The model 6600A, the Automated Dual Source High Resistance Bridge from MI, is a game-changer in the world of resistance metrology. Based on the widely adopted Dual Source High Resistance Bridge principle, the 6600A delivers unmatched accuracy and stability in resistance measurements. This makes it the preferred choice for National Measurement Laboratories (NMIs) across the globe. With its multiple modes of operation, the 6600A offers versatile and flexible solutions to meet different resistance measurement needs.

Only true ratio bridge for direct comparison of high-resistance standards

• The very best in commercially-available technology.

Only high-resistance bridge with voltage between 0 and 1000 V

• No limitations in selected voltage through resistors.

Offers any ratio up to 1000:1

• No ratio limitations (up to 1000:1).

Extended voltage range

• Extend beyond 1000 V, and up to 10,000 V.

Based on NMI chosen technology

• Leading-edge precision measurement technology.

Bridge Mode

Using the Bridge mode, the UUT is measured live against a standard reference resistor where the ratio of the sources is equal to the ratio of resistances (E1/E2 = R1/R2). This is the most accurate and reliable type of measurement for high resistance. Lead set N-type to N-type cables are supplied.

Available for use with the 6600A is the MI line of Matrix Scanners. The MI model 4610A is a 10- channel Coaxial Matrix Scanner designed specifically for use in High Resistance measurements. Using a proprietary (completely) coaxial design, leakage paths are minimized allowing measurements up to 1 TΩ with zero added uncertainty. N-type high and low connections are utilized for their superior isolation properties and labelled high and low on the rear panel. Additional cables are available for connection to various other types of High Resistance terminals such as BPO and Triax.

The MI model 9331G has become the primary standard in high resistance measurements in many laboratories. It is available in standard values from 100 MΩ to 100 TΩ and custom values available at any resistance therein. High stability and supplied alpha and beta temperature coefficients of the 9331G make them ideal for easy transport and operation in any working environment within the range of 18 °C to 28 °C. The resistance standards require no controlled oil or air bath to meet specifications, however, for improved performance, they can be placed in an air bath such as the model 9300A.

The model 9300A Laboratory Air Bath is designed as a convenient way to maintain the temperature of standard resistors. Heating and cooling are provided by Peltier modules for low noise operation. The air bath can be set for a wide range of temperatures to establish temperature coefficients. The model 9300A is a shielded bath and is controllable via GPIB.

Optional Accessories

4610A 10-Channel High Resistance Coaxial Matrix Scanner
9300A - Ultra High Stability Programmable Air Bath
66001 - Voltage Range Extender
6600A-Cal - Accredited Calibration
6600A-SW - Control and Data Acquisition Software (Included)
9331G-XXX - 100 MΩ, 1 GΩ, 10 GΩ, 100 GΩ, 1 TΩ, 10 TΩ, 100 TΩ Standard Resistors

9331G-01 - Lead Set, N-Type to GR
9331G-02 - Lead Set, N-Type to N-Type
9331G-03 - Lead Set, N-Type to BNC
9331G-XX - Lead Set, N-Type to Special
HF556 - HygroFlex Humidity Temperature Transmitter