Accubridge® 6020T Series

NEW From MI

Best Accuracy +/- 0.015 ppm From 1 Ω to 10 kΩ
• NEW Quick Measure Mode under 20 Seconds to First
Reading
• NEW Current Reversal Rate of 2 Seconds
• Measurement Rates as Fast as 0.1 seconds
• New ADCC Technology
• Proprietary Comparator Design
• Self-Calibrating Ratio Bridge
• 0.1 Ω to 100 kΩ range
• Linearity < 0.005 ppm
• IEEE488 and Manual Operation
• Accu-T-Cal™ Software For Calibrating PRTs Designed by
NMI
• 6 Channel Front Panel With Keep Warm Currents!
• • New Smaller Design for Improved Quality and Performance

Features & Benefits

The NEW AccuBridge® 6020T Thermometry Bridge (Furthermore 6020T) is the Metrologist’s choice for primary lab level thermometry measurements. With its innovative technology, the 6020T’s speed, measurement accuracy, and data handling capabilities make it the preferred primary thermometry measurement system in National Measurement Institutes (NMIs) and other primary labs worldwide. The 6020T designed for flexibility and ease of use. The 6020T features increased ampere-turn (AT) sensitivity with more turns on both the
master and slave windings and a new voltage feedback circuit to improve on the linearity error of the nanovolt amplifier. Also improved is the ratio from previous 1.5:1 ratios to the NEW Ratio range covering from 0.1 up to a maximum ratio of 4.05 allowing customers to meet all of their requirements. MI customers now have unmatched features and functionality to support its world-class measurement uncertainty capability.
Quick Measure Mode Provides Customers with the ability to have the first reading within 20 seconds from pressing Start; Current Reversal Rates improved for 2 seconds with measurement sample times as low as 0.1 seconds!

Only MI offers a DC Bridge with these improvements that can meet specification!

NEW Features
For years customers have been asked for MI to extend the measurement features of the DC Comparator Bridge to replace existing AC Technology. MI has finally not only answered these requests with the release of the 6020T but taken them to the next level.

The 6020T features a new QUICK MEASURE mode which allows the bridge to balance faster thus improving the first measurement reading is displayed within less than 20 seconds from pressing START!
Next, we focused on current reversal time. Customers have been requesting that a DC Comparator Bridge meets that again of AC Bridges. We accomplished this with the improved reversal rate function of 2 seconds!

MI is the only DC Comparator Bridge that has improved with these features and still meets stated specification!

We at MI understand budget limitations for customers and take that into account when designing new products. That is why the 6020T-Standard and 6020T-Premium models both equipped with a six-channel front panel design which incorporates a 1mA keep warm current. Why spend the money on two separate products from other manufacturers if your requirement completed with 1 product! No other DCC Bridge manufacturer offers both bridge and scanner in one unit!

If you required connection of more than 6, Optional 10—, 16—or 20—channel scanners could be used individually or together to connect to up to 40 channels of ratio measurement for up to 40 different test resistors/PRT’s calibrated. Please see the model 4210T and 4220T for options. The 4210T, 4220T series of scanners from MI come standard with the keep warm current option.

Ratio Range and Accuracy

The AccuBridge® Direct Current Comparator (DCC) with its binary wound current comparator technology balances current with an effective resolution of 25 bits. It provides ratio measurements with an accuracy to better than 15 ppb (Premium Model) It covers a ratio range of 0.1 to a maximum ratio of 4.05, with a linearity of better than 5 ppb.

The 6020T is perfectly suited for front panel operation, or you can team it with MI’s Accu-T-CalTM Operating Software for fully automated measurements, history logging, graphing, and regression analysis. Stand–alone operation with the touch sensitive display panel provides full bridge capabilities to the operator. Multiple measurements over time can be numerically displayed or graphically displayed to fit your needs best.

Overview

The 6020T designed in two separate models for user’s specification requirements or budget. The 6020T is available in two models Standard and Premium. The standard version is upgradeable at any time to Premium!
The operation of the 6020T bridges is simple and easy to use. You select functions using the menu on the large touch screen display. For absolute measurements enter the value and related uncertainty of the standard resistor using the display’s keypad. You enter the measurement functions such as current through the unknown resistor, settle time, the number of measurements, and the number of statistics the same way. The 6020T’s low-noise, touch screen display is interactive with the measurements. When a reading is complete, the average value and uncertainty (based on the number of statistics) are displayed. All uncertainty calculations are 2 sigma level. At MI, it’s not only about the equipment and science; it’s about what you can do and the ease with which you can do it.

Quick Measure Mode

The 6020T features a new QUICK MEASURE mode which allows the bridge to balance faster thus improving the first measurement reading is displayed within less than 20 seconds from pressing START!
Next, we focused on current reversal time. Customers have been requesting that a DC Comparator Bridge meets that again of AC Bridges. We accomplished this with the improved reversal rate function of 2 seconds!
MI is the only DC Comparator Bridge that has improved with these features and still meets stated specification!

Actual Measurement Shown Above!

Things To Note:

Total Measurement Time for 35 Measurements = 2 Minutes 2 Seconds!

Final Standard Deviation of Run = 0.0054ppm!

Rx = 100Ω  Rs = 25Ω

Ix Current = 1mA!

 

2 Models To Choose From

We at MI understand budget limitations for customers and take that into account when designing new products. That is why the 6020T-Standard and 6020T-Premium models both equipped with a six-channel front panel design which incorporates a 1mA keep warm current. Why spend the money on two separate products from other manufacturers if your requirement completed with 1 product! No other DCC Bridge manufacturer offers both bridge and scanner in one unit!

How to Select

Model 6020T – Standard 6020T – Premium
Maximum Ratio 14:1 1:14 4.05:1 1:4.05
Current Reversal Minimum 2 Seconds 2 Seconds
Sample Rate Minimum 0.1 Seconds 0.1 Seconds
0.1 to 1 0.07 0.07 0.015 0.02
1 to 10 0.07 0.07 0.015 0.02
10 to 100 0.07 0.07 0.015 0.02
100 to 1k 0.07 0.07 0.015 0.02
1k to 10k 0.07 0.07 0.015 0.02
10k to 100k 0.15 0.15 0.1 0.15
Specifications in Parts Per Million (PPM)

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