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
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).
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.
Operation
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.
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
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
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
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®
Mini-USB
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
SIDSP®-Technology
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