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TM7900 Precision Volt-second Generator for Flux Meter Calibration

TM7900 is a high-precision Calibrator for Flux Meter , which generates magnetic flux by a built-in high-precision Volt-second Generator (1Vs=1Wb). It calibrates flux-meters by comparing indicating value of the flux-meter with the value it generates. Compared with Mutual Inductance method, Volt-second method is featured with easier to use, better precision and traceability, it is applied for calibrate digital flux-meter and electrical integrator.

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  • TM7900

  • TUNKIA

TM7900 Precision Volt-second Generator 

for Flux Meter Calibration   

TM7900 Precision Volt-second Generator For Flux Meter Calibration

1. Summary

TM7900 is a high-precision Calibrator for Flux Meter , which generates magnetic flux by a built-in high-precision Volt-second Generator (1Vs=1Wb). It calibrates flux-meters by comparing indicating value of the flux-meter with the value it generates. Compared with Mutual Inductance method, Volt-second method is featured with easier to use, better precision and traceability, it is applied for calibrate digital flux-meter and electrical integrator.


2. Features

Accuracy: 0.005%, 0.01%, 0.02% or 0.05%.

Built-in high-precision voltage source and timer.

Generate magnetic flux by integrating voltage and time.

Calculate and output voltage and time by setting magnetic flux value.

Quick calibration in several seconds.

Unit switch: mWb, Wb, Vs, mVs, Mx.

Support setting interior resistance and wire resistance.

Eliminate interior resistance’s influence by compensation.

Large LCD screen and press-key.


3. Application

Fast Calibration of Digital Fluxmeter

TM7900 Precision Volt-second Generator For Flux Meter Calibration Fast Calibration of Digital Fluxmeter





4. Specifications

4.1 DCV Output

Range

Accuracy

± (ppm of reading + ppm of range) [1]

0.05 %

0.02 %

0.01 %

0.005 %

2 mV

200 + 200

100 + 100

50 + 100

20 + 100

20 mV

200 + 200

100 + 50

50 + 30

20 + 10

200 mV

200 + 200

100 + 50

50 + 30

20 + 10

2V

200 + 200

100 + 50

50 + 30

20 + 10

Note [1] : (ppm = parts per million) (e.g., 10ppm = 0.001%).

Regulating fineness: 0.005*Range, 0.001%*Range (0.005 %).

Protective function: Short-circuit protection, Overload protection.


4.2 Adjustable Timer

Time output

Measurement Uncertainty (k=2), μs

0.05 %

0.05 %

0.05 %

0.05 %

0.1 s

0.5

0.5

0.2

0.2

0.5 s

0.5

0.5

0.2

0.2

1 s

0.5

0.5

0.2

0.2

5 s

0.5

0.5

0.2

0.2

Pulse width output range: 0.1s ~ 5s


4.3 Standard Flux Output

Range

Measurement Uncertainty (k=2), ppm*RD + μWb

0.05 %

0.05 %

0.05 %

0.05 %

Combination of voltage and time

500 +0.1

200 +0.1

100 +0.1

50 +0.1

Flux output range: 0.1mWb ~10Wb, 7-dights display.


5. General Specifications

Power Supply

AC (220±22) V,(50±2) Hz

Temperature Performance

Operating temperature: 0°C~50

Storage temperature: -20°C~70°C

Humidity Performance

Operating humidity: 40%~80% R·H, no condensation

Storage humidity : < 95% R·H, no condensation

Weight

About 4 kg

Communication Interface

RS232 interface

Dimensions


180mm(width) ×270mm (depth)×230mm (height)


6. Ordering Information

TM7900 Precision Volt-second Generator For Flux Meter Calibration Ordering Information


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