6600A Dual Source High Resistance Bridge

  • Based on Proven NMI Design
  • Range: 100 kΩ to 10 PΩ
  • Voltages: 1 V to 1000 V (10 000 V Optional)
  • Automatic and Manual Operation
  • Not Affected by Temperature Change
  • 10- and 20-Channel Coaxial Matrix Scanners (Optional)
  • Environmental & Pressure Monitoring (Optional)
  • Ratio 1:1, 10:1, 100:1, 1000:1
  • Multiple Modes of Operation
Features & Benefits

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.

Feature Benefit
Only true ratio bridge mode for direct comparison of high resistance standards. Customers get the very best in commercially available technology.
Offers only high resistance bridge with any voltage between 0 and 1000 V. Customers are no longer limited in selected voltage through resistors.
Offers any ratio up to 1000:1. Users can fully use any ratio up to 1000:1 and are not limited in ratio.
Voltages can be extended to 10 000 V. Allows users to extend voltage range beyond 1000 V up to 10 000 V.
Based on NMI chosen technology. Gives users the ability to use leading edge highest 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.

 

Related Products

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

Specifications
6600A Specifications1, 4
Resistance Measurement Live Ratio Mode
Uncertainty2 (ppm)
Direct
Measurement3
Range Applied Voltage 1:1 & 10:1 Ratios 100:1 Ratio
100 kΩ to 1 MΩ 1 V to 100 V < 7 < 20 100
1 MΩ to 10 MΩ 1 V to 100 V < 7 < 20 50
10 MΩ to 100 MΩ 10 V to 1000 V < 7 < 20 50
100 MΩ to 1 GΩ 10 V to 1000 V < 7 < 20 50
1 GΩ to 10 GΩ 10 V to 1000 V < 7 < 20 100
10 GΩ to 100 GΩ 100 V to 1000 V < 12 < 40 100
100 GΩ to 1 TΩ 100 V to 1000 V < 20 < 50 500
1 TΩ to 10 TΩ 100 V to 1000 V < 100 < 250 1,000
10 TΩ to 100 TΩ 100 V to 1000 V < 500 < 1,000 1,500
100 TΩ to 1 PΩ 1000 V < 1,000 < 10,000 10,000
1 PΩ to 10 PΩ 1000 V < 15,000 < 50,000 100,000

1. Uncertainty Confidence Level: 95 %
2. Ratio mode uncertainty does not include uncertainty of reference resistor (Results of calibration with model 8000B).
3. 12 month uncertainties relative to calibration standards used.
4. Specifications do not include settle time, dielectric or voltage coefficient etc. for the resistor being measured.

Additional Capabilities

Voltage Generation Current Measurement
Range Resolution 24 hour
ppm
1 Year
ppm
Amps
Range
Resolution Accuracy
±,%,rdg
18°–28 °C,
1 Year
Temperature Coefficient
±,%,rdg/°C
2 – 20.2 V 10 μV 2 10 20 pA 100 aA 1 0.1
0 – 202 V 100 μV 2 10 200 pA 1 fA 1 0.1
200 – 1025 V 1 mV 2 10 2 nA 10 fA 0.2 0.1
20 nA 100 fA 0.2 0.03
200 nA 1 pA 0.2 0.03
200 μA 1000 pA 0.1 0.005

General Specifications

Resistance
Mode
Current Mode Power Temperature Relative Humidity Warm-Up Connection
105 to 1015 Ω 20 pA to 20 mA 450 W Operating:
23 °C ± 5 °C
Storage:
-5 °C to +60 °C
Operation:
< 80 % to 30 °C
< 70 % to 40 °C
< 40 % to 50 °C
10 minutes N-Type
Connectors

 

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