MiniTest 725-735-745 - Senze-Instruments Benelux

Senze-Instruments BENELUX
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Process & Quality Control

MiniTest 725-735-745

Coatings & Industry > Physical properties > Thickness Dry Film
Digital signal processing
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      


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).
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.


Menu-driven operation via graphic interface. Instructions and help texts in 20 languages help you with the settings.
The pre-defined calibration procedures assist you in calibrating as per international standards (ISO, SSPC, etc.).
There is a separate user guidance for measurements on rough surfaces.
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
internal probe
saves up to 10,000 measurement values in 10 groups

MiniTest 735
external, interchangeable probes connected via cable
saves up to 10,000 measurement values in 10 groups

MiniTest 745
interchangeable probes
the probes can be connected internally as well as externally by cable and also without cable via Bluetooth
saves up to 100,000 measurement values in 100 groups
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
                                              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
Calibration                               Factory calibration
                                             1-pont calibration (Zero)
                                             2-point, 3-point calibration
                                             Special calibration method for rough substrates
                                             Adjustable offset    
Additional calibration                 ISO 19840:2004(E)
procedures according to            SSPC-PA2
international standards              SS 184160
                                             AS 3894.3
Data interface                         Bluetooth® 4.0
                                            Bluetooth Smart®
Printer                                   Standard ASCII printer
Wireless                                ElektroPhysik printer
Display                                 graphics display, adjustable lighting
Power supply                        2 batteries AA / LR-06 / Mignon or rechargeable NiMH cells AA / HR6
Operating temperature range -10 °C ... +60 °C
Storage temperature range    -20 °C ... +70 °C
International standards           DIN EN ISO 1461
                                            DIN EN ISO 2064
                                            DIN EN ISO 2178
                                            DIN EN ISO 2360
                                            DIN EN ISO 2808
                                            DIN EN ISO 3882
                                            ISO 19840
                                            ASTM B 244
                                            ASTM B 499
                                           ASTM D 7091
                                           ASTM E 376
                                           AS 3894.3
                                           SS 184160
                                           SSPC-PA 2
Dimensions                           157 mm x 75,5 mm x 49 mm
Weight                                 MiniTest 725 approx. 175 g
                                          MiniTest 735 approx. 210 g
                                          MiniTest 745 approx. 175 g

Minitest 70 F  & 70 FN        


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
Minitest 70 F :  
Non-destructive measurement of:
 non-magnetic coatings such as paint, enamel, chrome and zinc on ferromagnetic bases  (e.g. constructional steel, car bodies, etc. )

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

Scope of delivery
  Steel and aluminium test plates
  Calibration foils
  Operating instructions
  Gauge tether
  Storage case

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  

Measuring units                                            metric/imperial switchable
Calibration                                                   standard, 1-point and 2-point calibration
Statistics                                                      n, x, s, Min, Max
Operating temperature                                  -10 °C - 60 °C
Storing temperature                                      -20 °C - 70 °C
Power supply                                                1x AA (Mignon)-battery
International standards                                  DIN EN ISO 1461, 2064, 2178, 2360,
                                                                   2808, 3882, ASTM B 244, B 499,
                                                                   D7091, E 376
Dimensions                                                   approx. 157 mm length, Ø 27 mm
Weight                                                         ~ 80 grams
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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