Wall Thickness Measurement Gauge – MiniTest 7400FH

About Wall Thickness Measurement Gauge – MiniTest 7400FH

The MiniTest 7400FH is a professional, high-end wall thickness measurement gauge suitable for non-destructive testing of non-magnetic materials such as glass, plastics, stainless steel and composites of up to 24mm.  The thickness gauge is suitable for use on complex component geometries and offers repeatability, compensates for temperature influences of the measuring environment & the measurement object and is very highly wear-resistant.

The wall thickness is determined by measuring the distance of a steel reference ball to the sensor tip.  A powerful magnet attracts the reference ball which holds it exactly over the sensor tip.

Measurements are displayed on an easy to use menu driven operator interface and data filing system.  To maximise the accuracy of the instrument, two easily interchangeable sensors (probes) with a carbide metal probe tip and a variety of ball sizes are available to cover thickness ranges from 0 to 4 mm (FH4 probe) and 0 to 10 mm (FH10 probe).

Features & Benefits

  • Precision in wall thickness measurement of up to 24 mm
  • Greater accuracy and repeatability by the sensor-integrated digital signal processing (SIDSP®)
  • High resolution upwards of 0.1 µm
  • 20 readings per second
  • Wear-resistant sensors with hardened sensor tips
  • Recording and statistical evaluation of up to 240,000 readings
  • Display of minimum and maximum values
  • Menu-driven operator interface
  • Context-oriented online help
  • RS 232 TTL and IrDa 1.0 interfaces

Applications

The Minitest 7400FH is suitable for non-destructive wall thickness measurement of:

  • Non-magnetic materials like plastics, glass, ceramic, non-ferrous metals.
  • All kinds of hollow items like bottles, aluminium cans, glass and plastic containers with complex geometries.
  • Thermo-moulded parts like cups, cans, bowls.
  • Die-cast and moulded plastic parts, fibre compound materials, non-ferrous metals etc., for example in the automotive field (gear casing, body and interior components), in avionics (turbine components, combustion chambers, high-pressure pipes), in the medical field.

Specifications

Property Value
Measuring Range FH 4 probe:

  • 0 mm – 2.0 mm with 1.5 mm reference ball
  • 0 mm – 3.5 mm with 2.5 mm reference ball
  • 0 mm – 6.0 mm with 4.0 mm reference ball
  • 0 mm – 5.0 mm with 1.5 mm magnetic ball
  • 0 mm – 9.0 mm with 3.0 mm magnetic ball

FH 10 probe:

  • 0 mm – 4.0 mm with 2.5 mm reference ball
  • 0 mm – 7.0 mm with 4.0 mm reference ball
  • 0 mm – 10.0 mm with 6.0 mm reference ball
  • 0 mm – 13.0 mm with 9.0 mm reference ball
  • 0 mm – 16.0 mm with 4.0 mm magnetic ball
  • 0 mm – 24.0 mm with 6.0 mm magnetic ball
Measuring Tolerance FH 4 probe:

  • 0 mm – 2.0 mm± (3 μm + 1% of reading)
  • 0 mm – 3.5 mm± (5 μm + 1% of reading)
  • 0 mm – 6.0 mm± (10 μm + 1% of reading)
  • 0 mm – 5.0 mm± (20 μm + 2% of reading)

FH 10 probe:

  • 0 mm – 4.0 mm± (5 μm + 1% of reading)
  • 0 mm – 7.0 mm± (10 μm + 1% of reading)
  • 0 mm – 10.0 mm± (20 μm + 1% of reading)
  • 0 mm – 13.0 mm± (20 μm + 1% of reading)
  • 0 mm – 16.0 mm± (40 μm + 2% of reading)
  • 0 mm – 24.0 mm± (60 μm + 2% of reading)
Low range resolution 0.1 μm (FH 4)/
0.2 μm (FH10)
Repeatability Better than ± (1 μm + 0.5 % of reading)
Measuring principle Magnetostatic
Logging rate 1, 2, 5, 10, 20 readings per second (selectable)
Data memory 240,000 values (limited to 100,000 values on MiniTest 7200 FH)
Calibration Factory, Zero, Zero + up to 4 points
Measuring units metric (μm, mm), imperial (mils, inch)
Statistical charting Numeric, trend, and histogram (with MiniTest 7400 FH only)
Interfaces RS232 TTL + IrDA 1.0
Operating temperature -10 °C – 60 °C(Storage temperature: –20°C to +80°C)
Dimensions and weight 153 mm x 89 mm x 32 mm / 310 g (Gauge with Batteries only)
Power supply 4 x AA (LR06) batteries, or optional power unit (90 – 240 V~/48 – 62 Hz)

Ordering Information

Part Number Description
80-176-0300 MiniTest 7400 FH, includes:

  • MiniTest 7400FH Instrument
  • Data transfer software MSoft 7 Professional Edition
  • Operating instructions on CD Rom
  • Short operating instructions
  • 4 AA batteries, type LR06
  • Plastic carrying case
  • Protective rubber casing with positioning device and carry strap
  • 1 magnetic screwdriver
80-177-0300 MiniTest 7200 FH
80-174-0600 FH4 Probe 0 to 6mm, includes:

  • Sensor FH 4
  • 3 precision standards (approx. 0.25 mm, 1 mm and 3 mm)
  • Spring-loaded measuring stand for the FH 4 sensor
  • 1 packet of 100 1.5 mm balls
  • 1 packet of 100 2.5 mm balls
  • 1 packet of 50 4 mm balls
  • Zero calibration standard for the 1.5 mm, 2.5 mm and 4 mm balls respectively
80-175-0900 FH10 Probe 0 to 13mm, includes:

  • Sensor FH 10
  • 3 precision standards (approx. 1 mm, 3 mm and 8 mm)
  • Spring-loaded measuring stand for the FH 10 sensor
  • 1 packet of 100 2.5 mm balls
  • 1 packet of 100 4 mm balls
  • 1 packet of 50 6 mm balls
  • Zero calibration standard for the 2.5 mm, 4 mm and 6 mm balls respectively
  • Last updated: June 2024
  • Version: 1.0

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.