MiniTest 725-735-745

Coatings & Industry > Physical properties > Thickness Dry Film

Digital signal processing

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The highlights of this family of devices are:

Sensor integrated digital signal processing (SIDSP) of measurement values

All sensors can be connected without cables to the MiniTest 745 device

Wear resistant sensors

Bluetooth and USB interfaces

Graphical menu control

Instructions in 20 languages

Coating thickness gauge

MiniTest 700

SIDSP®-Technology

The coating thickness gauges by ElektroPhysik from the MiniTest 700 series rank among the most accurate and versatile coating thickness measuring devices.

The device is available in 3 versions:

MiniTest 725: Measuring device with integrated sensor.

MiniTest 735: Sensor connected by cable to the measuring device.

MiniTest 745: The sensor can be optionally plugged into the device (equivalent of an integrated sensor), connected by cable to the device, or connected wireless via Bluetooth to the device.

The MiniTest 700 series devices facilitate non-destructive coating measurement of non-magnetic coatings (paint, synthetic material, chromium etc.) on ferromagnetic substrates (steel) and of insulating coatings (varnish, enamel, synthetic material, anodising aluminium etc.) on conductive substrates (aluminium, copper, austenitic stainless steel).

Modes Operation

Measurement Modes

Single Mode

In the single mode up to 70 measuring values per minute can be recorded and saved.

Continuous Mode

In the continuous mode up to 20 coating thickness values are calculated per second. In this mode you can for e.g. determine the thinnest or thickest spot and then save the readings in a series of measurements.

Sensors

We have reasserted our position of leadership in the coating thickness gauge market with the SIDSP sensors, an outcome of decades of experience in developing special sensors and the use of state of the art technology. SIDSP stands for "Sensor Integrated Digital Signal Processing", meaning that a special micro processor (DSP) collects, filters and processes measurement values in the sensor head.

Above average precision and repeat accuracy

Temperature compensation across the entire range

Wear-protected, polished sensor poles

High immunity to electromagnetic (EMC) interference

Internal characteristic curve with up to 50 data points

Automatic compensation of the conductive value in the case of non-ferrous metals

Versatile sensors for varied measuring jobs.

We would be happy to provide you with advice to select the right sensor; avail of our offer and call us or send us an email. Together we will determine what is the optimal configuration for you and even gladly assist you subsequently in operating the device. We owe it to our customers to provide consultation and it follows that it is offered free of cost.

Data Transfer

The measurement data saved in the MiniTest 725 / 735 / 745 devices can be transferred by USB or Bluetooth to PCs, tablets or smart phones. You can save up to 10,000 measurement values in the MiniTest 725 and 735, and up to 100,000 measurement values in the MiniTest 745.

This enables you to record measurement values on site and to evaluate and archive them at a later point in time.

The delivery of the device includes the data transfer software MSoft 7 basic. The advanced software MSoft 7 Professional will help you can manage and evaluate the measurement values.

Fields of Application

On account of the compact design and multi-functionality of the connectable sensors the device can be used for the most varied measuring jobs:

Measurements to be taken on small parts, on thin metal bars or grooves call for our miniature sensors with the world's tiniest measuring tip of 2.5 mm / 0.1".

We offer special sensors for auto body measurements with reduced sensitivity to factors relating to the geometry of the component and/or the thickness of the auto body sheet.

In aircraft construction, there are different alloys used based on aluminum or titanium -

our coating thickness gauge automatically compensates for the different conductivities and can measure without recalibration on various non-ferrous substrates.

There are special tube sensors to measure grooves, drill holes and spots not easily accessible.

In the area of heavy corrosion protection, e.g. in large steel structures (bridges and shipbuilding), large amount of readings are taken on site and evaluated later. Here these instruments often known as paint thickness gauge.

The robust heavy duty sensors are meant for use in environs prone to dust and moisture (construction sites, shipyards).

When in need of measuring thicker coatings like fireproof coatings or special coatings in pipeline constructions, the F 15 sensors help measure up to 15 mm / 0.59" of coating thickness on steel.

A special sensor is available for measurement on heavily abrasive surfaces with high surface roughness.

In quality control labs the devices can be connected by USB or Bluetooth to your PC for further processing of measurement data, for e.g. with the CAQ software QUIPSY.

MiniTest 725 MiniTest 735 MiniTest 745

MiniTest 725

internal probe

saves up to 10,000 measurement values in 10 groups

Specifications 1 Specifications 2 Specifications 3

Sensor embodiment MiniTest 725 fixed internal, non-changeable

MiniTest 735 external, connected via cable

MiniTest 745 internal / external changeable

No. of measurement series MiniTest 725 10

MiniTest 735 10

MiniTest 745 100

Measurement memory MiniTest 725 10

MiniTest 735 10

MiniTest 745 100

Statistical functions Number of readings

Minimum

Maximum

Mean value

Standard deviation

Coefficient of variation

Single value statistics

Block statistics (Standard or free configurable)

Limit monitoring Optical and acoustical signaling

Measurement units metric : µm - mm - cm

imperial mils : inch - thou

Minitest 70 F & 70 FN

SIDSP®-Technology

Application 70 FN 70 F Application

Minitest 70 FN :

Non-destructive measurement of:

non-magnetic coatings such as paint, enamel, chrome and zinc on ferromagnetic bases insulating coatings such as paint, anodic coatings on non-ferrous metal bases

Performance Scope of delivery

Performance features
Dual sensor for automatic identification of the substrate (FN model). According to the substrate, it adjusts to the appropriate measuring principle: magnetic induction or eddy currents principle.
Quick statistics mode to calculate the number of readings, average, standard deviation and min., max. value lightweight: 80 grams only

Specifications 1 Specifications 2

Measuring range                                          N: 0 mm - 2.5 mm/ 100 mils
                                                                  F: 0 mm - 3 mm/ 120 mils
Measuring principle                                      magnetic-induction/eddy currents
Signal processing                                         Sensor integrated 32-bit signal

processing (SIDSP®)
Accuracy (according to DIN 55350 Part 13) ± (1.5 μm + 3% of reading) with

1-point calibration

± (1.5 μm + 2% of reading) with

2-points calibration

Repeatability (according to DIN 55350 Part 13) ± (1 μm + 1% of reading)

Low range resolution                                    0.5 µm
Minimum curvature radius convex                  5 mm
Minimum curvature radius concave                40 mm
Minimum substrate thickness                         F: 0.5 mm       N: 0.04 mm

Calibration foils

Calibration foils with thicknesses ranging from 10 μm up to 8 mm

Option: Manufacturer’s certificates M according to DIN 55350 part 18 proving the accuracy of calibration foils and/or gauge

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