Barletta Apparecchi Scientifici Srl
MTS
Milliohmmeter 4 Terminal Test Standards

CROPICO MTS




MTS Data Sheet
Click to view in PDF format  (54KB)
  • True 4 Terminal Standards

  • Switch Selectable Values

  • Polarity Reversal Switch

  • Four Terminal Zero

  • High Current Capability

  • Two Models Available:

    MTS1A: 1mΩ to 100kΩ
    MTS2: 400 Ω to 400 kΩ

  • Supplied Complete with Calibration Certificate



The Milliohmmeter Test Standards are designed for the simple and easy calibration of low resistance ohmmeters and Kelvin / Thomson bridges. The true four terminal resistance values are switch selected and provision is made for + and - full scale values. A four terminal zero value may also be selected, thus making zero and full scale calibration of instruments simplicity itself.
Two models are available, the MTS1A which has 11 values from 1 mohm to 100 kohm and the MTS2 which has 10 values from 400 micro-ohm to 400 kohm, making it ideally suited for the calibration of digital instruments with a long scale length of 4000 or 6000 count.

The Test Standards are housed in a rugged bench portable aluminium case with tilt handle. The internal standards are manufactured from premium quality resistance wire with low temperature and load coefficient. For the selection of the standards, a special switch of our own construction is used ensuring a long and trouble free operating life. The units are supplied complete with a calibration certificate.


MTS1/A

Resistance Value ( Ω )

Uncertainty of adjustment at 20 C

Dissipation Max Watts

Current Max A

Typical Temp. Coeff. 15 to 20 C

100KΩ

0.01%

0.1

1 mA

<10 ppm

10kΩ

0.01%

0.1

3 mA

<10 ppm

1kΩ

0.01%

0.6

25 mA

<10 ppm

100Ω

0.01%

0.6

75 mA

<10 ppm

19Ω

0.01%

0.43

150 mA

<10 ppm

10Ω

0.01%

0.45

212 mA

<10 ppm

1.9Ω

0.01%

0.475

500 mA

<10 ppm

0.01%

0.56

750 mA

<10 ppm

100mΩ

0.01%

0.625

2.5 A

<10 ppm

10mΩ

0.05%

0.25

5 A

<10 ppm

1mΩ

0.05%

0.1

10 A

<10 ppm


MTS2

Resistance Value ( Ω )

Uncertainty of adjustment at 20 C

Dissipation Max Watts

Current Max A

Typical Temp. Coeff. 15 to 20 C

400KΩ

0.01%

0.1

0.45 mA

<10 ppm

40kΩ

0.01%

0.1

1.5 mA

<10 ppm

4kΩ

0.01%

0.1

5 mA

<10 ppm

400Ω

0.01%

0.1

15 mA

<10 ppm

40Ω

0.01%

0.1

50 mA

<10 ppm

0.01%

0.1

150 mA

<10 ppm

400mΩ

0.01%

0.1

500 mA

<10 ppm

40mΩ

0.01%

0.1

1.5 A

<10 ppm

4mΩ

0.1%

0.4

10 A

<10 ppm

400 Ω

0.1%

0.04

10 A

<10 ppm


MTS Technical Specifications

Terminals

4 mm binding posts will accept spade tags and 4mm banana plugs. Low thermal emf types are used for the potential connections.

Working Temperature

5...40 C

Storage Temperature

+5...+40 C

Switches

Special Combination switch with low thermal gold/silver contacts for the potential selection and low resistance contacts for the current selection

Dimensions

215 x 88 x250mm (W D H) 1/2 19'' rack 2U high

Weight

2.8kg approx.