The measuring device Franklin tester is designed to measure the insulation resistivity of coating according to the ASTM A717/ A717 M - 95 Standard.

Microprocessor controlled power supply with bi-directional servomotor and electronic regulator of adjustments rate allows setting the specific pressure forces of measuring head (which contains 10 electrodes) on the tested object. The tested object is placed on the hot plate of the measuring table, which is pressed down to the measuring head as well as warmed up according to the settled pressure and temperature values.
The device is fully automated including the procedure of the pressure and temperature setting, measurement, calculations and the recording of measurement results.

TECHNICAL DATA
> Number of electrodes 10
> The surface of one electrode 64,5 mm2
> Total surface of electrodes 6,45 cm2
> Pressure adjustment in MPa lub psi
> The range of pressure adjustment (2,0 ÷ 7,0) MPa
> Accuracy of pressure adjustment ±0,5%
> Temperature adjustment in Celsius or Fahrenheit degrees
> The range of adjustment from ambient temperature to 200 °C
> Accuracy of temperature adjustment ± 5 °C
> Voltage supply of the tested object (0,500 ÷ 0,001) V
> The range of current measurement 1,1A
> Accuracy of current measurement ± 0,001A
> Quality control of the contact with the base of the coat (electrotechnical sheet)automatic
> The control of measurement correctness continuous
> The number of saved results max. 350
> The possibility of data transmission to the external computer by series interface
> Measurement results presentation by means of: liquid-crystal display of the device,
monitor, after connection the device to the computer,

Power supply:

> Three-phase power supply 3*400V +5% -10%
> frequency 50 Hz
> power 2 kVA

The performance capabilities of the tester ensure the measuring precision acquired for the unequivocal evaluation of both insulating coat of the sheets and the quality of varnish procedure. Franklin tester is especially valuable as basic equipment for research laboratories and companies, which are engaged in technology, production and utilisation of electrotechnical steel.