Brockhaus Messtechnik Franklin Tester FT 510 层间电阻测量仪
Determination of surface resistance of individual samples of electrical steel and
punched parts
Quality control of insulation coating
Manual or fully automatic version
Preparation and execution of the measuring process according to
ASTM-Standard A 717-01 and IEC 60404-11
Measuring categories
Surface resistance
Resistance distribution
Operating principle
Measuring the total current which flows through the insulation coating of the sample
when pressure is applied via several contacts. Conversion of the measured value to an
equivalent surface resistance.
Especially suitable for quality control of insulation coating.
Constructed from 3 main components:
Voltage supply unit Testing device Hydraulic pump
The test head consists of two longitudinal rows of five vertically mounted steel rods
which are free to move axially against the surrounding spiral springs. A stainless steel
measuring contact is positioned at each end of each rod. It is possible to move the test
head hydraulically perpendicular to a surface.
The testing contacts are pressed onto the insulation coating with a pressure of 129 N
per electrode. An electrical contact to the steel sheet is created with a spiral drill. If the
resistance is finite a current inversely proportional to the resistance flows through the
insulation coating.
Alternative operating modes:
Measuring the insulation via all 10 electrodes
Measuring the insulation as a single resistance per electrode
Inline version for operation in existing production lines.
Fully automatic measurement including comprehensive monitoring via FMA Expert software
and integration into quality management systems, configuration of measuring station
and customer-specific software.
Technical Data
Testing voltage ：0.5 V, 0.1 mV resolution
Accuracy of settings： better than ± 0.5 %
System accuracy ：better than ± 0.5 %
System resolution ：1 mV (0.1 % at 1 V )
Measuring unit for hydraulic pressure ：0 to 70 bar ± 0.5 %
Hydraulic cylinder ：length of stroke: 15.3 cm
cylinder surface： 14 cm²
force：550 bar
Test head： electr. contact: 10 contact pins
total area： 6.45 cm² ± 0.5 %
Maximum testing pressure ：25 bar (displayed value)
Weight (manual version) ：voltage supply unit approx. 9 kg
device and pump approx：44 kg
Supply voltage ：220 V AC, 50 / 60 Hz
Brockhaus Messtechnik Franklin Tester FT 510 层间电阻测量仪
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