Metrológia elektriny

Fluke 7010N - Transref 10-Volt DC VoltageTransfer System

Fluke 7010N - Transref 10-Volt DC VoltageTransfer System

Transref 10-Volt DC VoltageTransfer System

While Fluke"s Nanoscan Volt Maintenance Systems are designed to sit permanently in your standards lab, the Model 7004T Transref provides a simple means of importing traceability from higher order standards laboratories. It can equally be used to export your 10-volt traceability to other labs.
While Fluke"s Nanoscan Volt Maintenance Systems are designed to sit permanently in your standards lab, the Model 7004T Transref provides a simple means of importing traceability from higher order standards laboratories. It can equally be used to export your 10-volt traceability to other labs.

More details

Dostupnosť: Na objednávku
 
Informácie

During transportation, each reference module remains powered either from its internal battery pack or from a 12-Volt DC supply (e.g. vehicle cigar lighter socket).

  • The Most Stable DC Voltage Transfer System Available
  • Predictability to 0.15 ppm
  • Better than 1 part in 108 Noise Performance
  • Accepts 4 or 10 Model 7000 References
  • 10-Volt Average Output for Traceability Import/Export
  • Suitable for Unpowered Transportation

 

Between 4 and 10 reference modules

Each Nanoscan system consists of one or more Model 7000 solid-state zener reference modules that plug into a mainframe chassis. The 10-Volt ouputs from these modules are routed via an analog signal backplane to the Nanoscan module where they are averaged to produce an ultra low-noise hardware Average 10 Volt output.

High sensitivity null detector

The Nanoscan module also contains a high-sensitivity (0.01ppm resolution) null detector that compares individual 10-Volt reference outputs with the Average output, enabling you to verify the stability of each reference to a very high confidence level. Individual references can also be switched in and out of the hardware average to evaluate their overall contribution.

Simple integration of external reference standards

In addition to intercomparing individual internalreferences to the system average, the null detector can also be used to measure external reference standard, providing an easy method of importing or exporting traceability from the Nanoscan system.

10-Volt Average, Buffered 10-Volt Average and Average 1.018-Volt Outputs

The Nanoscan module also generates a buffered 10V output to drive resistive loads such as Kelvin Varley dividers, and a 1.018V output for comparison with Weston cells.

Automatic intercomparison using 7050 volt maintenance software

Although the Nanoscan can be driven manually via its front panel controls, the full benefits of process automation is achieved when you use it with the 7050 Volt Maintenance Software. This software, which runs under WindowsTM95 or NT, enables you to initiate scan sequences and log all the results into an ExcelTM spreadsheet for later analysis.

Calibration Instruments   >   DC/LF Electrical Calibration   >   Standards   >  
7004N/7010N
10V Output
Stability
7004N:90 days: 0.8ppm
1 year: 1.2ppm
7010N:90 days: 0.7ppm
1 year: 1.0ppm
Predictability
7004N:±0.2 ppm/year typicalAfter 5 points, 3 mo. apart
7010N±0.1 ppm/year typical
After 5 points, 3 months apart
Temperature Coefficient (15 - 35°C)
7004N:< 0.03 ppm/°
7010N:< 0.02 ppm/°
Noise (rms)
7004N:0.05 to 10Hz: < 0.05 ppm RMS
Standard deviation of 90 day regression: < 0.06 ppm
7010N:0.01 to 10Hz: < 0.03 ppm RMS
Standard deviation of 90 day regression: < 0.04 ppm
Hysteresis recovery
7004N:< 0.1 ppm (after conditioning cycle and battery discharge)
7010N:< 0.07 ppm
(after battery discharge)
Output Resistance
7004N/7010N: 500/n Ohm
Where n = number of modules fitted

10V 4 wire Output (relative to Average)
Offset
< ±1µV
Output Current
12mA max.
Load Regulation
Zero to 2mA:< 0.1 ppm
2mA to 12mA:< 0.5 ppm
External Standard Input
Range:+9.990 to +10.010V
Input Impedance:100 Mohm + 10pF (typic

Null Detector
Range
-9999.9 µV to +9999.9 µV
Measurement Errors
Chan. to Average:± 0.3% of difference
Chan.to out of Average:± 0.1% of difference
External Standard:± 0.001%
Chan. to Chan.:± 0.1 µV
Oven Temperature Monitor
Accuracy:± 3°C
Stability/Repeatability:: ± 0.1°C/year

Battery
Type
NiMH
Backup Period
16 hrs from fully charged
Recharge time (typical)
2 hours
Half Life
5 yrs

Environment
Temperature
Operating:+15°C to 35°C
Transit:-18°C to 45°C
Warm-up period:20 min to ±0.2 ppm 2 hours to final value

General Specifications
Power, battery life
7004N:< 6W
7010N:< 12W
12V DC Connection
Yes
Dimensions
7004N:133 x 449 x 355 mm
(5.24 x 17.68 x 13.19 inch)
7010N265 x 449 x 355 mm
(10.43 x 17.68 x 13.19 inch)
Weight
7004N:9.6kg (21.2Ibs)
7010N:20kg (44.1Ibs)
Safety
UL3111, CE marked
EN61010-1-1:1993/A2:1995
CETL

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