Karl Deutsch RMG 4015 Crack Depth Meter

Karl Deutsch RMG 4015 Crack Depth Meter

Accurately Measures Surface Crack Depth

Portable Crack Depth Measurement

Whether you want to evaluate the extension, orientation or inclination angle of a crack, or if you want to monitor the growth of a crack without increasing operation time, the Karl Deutsch RMG 4015 Crack Depth Meter has what you're looking for. The RMG 4015 is designed to measure crack depths on workpieces made of steel, iron and austenite, but can also be used to measure cracks on copper, brass, aluminum and most non-ferrous metals as well. Special probes are available for the measurement of inclined cracks. It is battery-operated and compact, making it highly portable, and with a wide variety of accompanying probes to choose from, the RMG 4015 has a solution, whatever your application.

 

Applications

The RMG 4015 uses the electrical potential principle: A probe with four spring-loaded and gilded contact pins is positioned across the crack to be measured on the workpiece. A constant alternating current is passed via two of the pins into the workpiece; the two other pins measure the voltage drop across the crack from which the depth of the crack is derived. The alternating current of the instrument utilizes the skin effect, which forces the current to follow the surface of the conductor and therefore, follows the contour of the crack. The operation and measured value formation are monitored by the microprocessor of the gauge.

Shown here with RMSL Probe used for measuring oblique cracks

 

For Oblique cracks, the instrument is equipped with an additional measuring function for the determination of oblique cracks, which helps determine the inclination of the crack with respect to the material surface. The measurement is executed by means of a special four-pin probe, which allows you to connect an external current pole to be positioned to the left or right of the crack. Via the differences of the readings and the crack depth measured, the meter will determine the inclination and the projection perpendicularly to the surface.

 

Features

  • Small, battery operated mobile instrument
  • Displays the crack depth in mm or inches
  • Menu-guided operation
  • Crack depth measurement for inclined cracks in ferromagnetic materials
  • Orientation of inclined cracks determinable with special probe setup
  • Robust probe design
  • Three standard probes are available for most workpieces
  • Special probes are available for surfaces of complex shape and difficult accessibility crack locations
  • Sturdy, exchangeable and gold plated contact pins
  • Interface for printer and PC
  • Memory for measured crack depths
  • Fast evaluation (1 measurement per second)
  • Single and continuous measurement operation
  • Wide range of accessories: control blocks, polishing fleece and self twisting or needle contact pins

Probes Guide

(All dimensions shown in mm)

 

 

Standard Probe RMSQ 0°

#4418.001
Square arrangement of the pins for measurement of normal cracks at difficult to reach locations.
Includes 1 spare contact pin (standard pin).

Standard Probe RMSL 90°

#4417.001
90° right angled probe with linear arrangement of contact pins for measurement of normal cracks (e.g. inside of bore holes or inside of tubes). Includes 1 set of spare contact pins (standard pins).

Standard Probe RMSL-S 0°

#4421.001
Linear arrangement of contact pins for measurement of inclined and normal cracks. The design of the probe allows for measurement of difficult to reach locations. Includes external magnet as 2nd current pole, cable and 1 spare set of contact pins (standard pins).

Standard Probe RMSL-S 90°

#4420.001
90° right angled probe with linear arrangement of contact pins for measurement of inclined and normal cracks (e.g. inside bore holes or inside of tubes). Includes external magnet as 2nd current pole cable and 1 set of spare contact pins (standard pins).

 

 

 

Standard Probe RMSL 0°

#4416.001
Linear arrangement of contact pins for measurement of normal cracks. The design of the probe allows for measurements of difficult to reach locations. Includes 1 set of spare contact pins (standard pins).

Special Probe RMSL 90°

#4498.004
90° right-angled probe with linear arrangement of contact pins for measurement of normal cracks. With a special arrangement of the pins it is possible to measure cracks with a width more than 2.54 mm (0.1 inch).

Special Probe RMSQ 90°

#4498.007
90° right angled probe with square arrangement of the pins to measure particularly small narrow cracks in very narrow gaps.

Special Probe RMSQ 0°

#4498.010
Square arrangement of the pins to measure normal cracks at very difficult to reach locations (e.g. inside deep bore holes or grooves).

Technical Specifications

RMG Crack Depth Meter Specifications

Application Depth measurement of surface cracks in electrically conducting materials
Principle of Measurement AC electrical potential drop method
Dimensions 83 mm x 151 mm x 35 mm / 3.3 inch x 5.9 inch x 1.4 inch
Weight 225 g / 8 oz
Power Supply 2 x 1.5 V Alkali-Manganese dry cells, size AA (mignon), alternatively 2 x 1.2 V NiCd or NiMH rechargeable batteries, size AA. Optical alarm in case of empty batteries.
Operating Time At least 11.5 hrs with Alkali-Manganese cells.
Data Storage A total number of approx. 3850 values can be stored in up to 300 batches. For each batch, a statistical evaluation can be printed out. This evaluation determines the minimum value, the maximum value, the average value and the standard deviation.
Measuring Range 0 mm to 99.9 mm / 0 inch to 3.9 inch for ferrous material, 0 mm to 12 mm / 0 inch to 0.5 inch for aluminum, copper, brass.
Measurement Accuracy Depending on material and measuring range. Typical figure for two-point material correction:
Ferromagnetic material 3 to 15 %, austenitic material 3 to 25 %.
Serial Interface RS232C to KARL DEUTSCH printer or PC: 4800 bauds, 8 data bits, 1 stop bit, no parity bit. USB-adapter available.
Environmental Conditions Operating temperature: From 0° C to 45° C, storage temperature: -20° C to 60° C with removed batteries, From 0° C to 45° C with inserted batteries (depending on battery type and brand).

Recommended Kit:

Minimum Purchasing Requirements: Instrument, Calibration Block, Probe (select from above list). We recommend the following:

  • RMG4015 Crack Depth Meter (#4015.003)
  • RMG Reference Calibration Block (#4720.002)
  • Standard Crack Depth Probe RMSQ 0° (#4418.001)
  • Fitting Tool for RMG Probe Pins (#4816.001)
  • Set of 8 Standard Contact Pins (#4815.001)

Additional Details:

  • The instrument is supplied standard with hard case (#7309.028) and user manual (#7443.401).
  • Probe and calibration block are required for factory calibration. When instrument is purchased with calibration block and probe, calibration certificate is included at no additional cost.
  • Spare pins and pin removal are recommended for ongoing maintenance.

Product Literature

Description Part # Saved Price Select Option Add to

Basic Kit
Karl Deutsch RMG 4015 Crack Depth Meter ET-KD-4015.003
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Karl Deutsch RMG Reference Block ET-KD-4720.002
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Karl Deutsch RMSQ 0° Crack Depth Probe ET-KD-4418.001
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Karl Deutsch Fitting Tool for RMG Probe Pins - 48015.00x ET-KD-4816.001
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Karl Deutsch Consumption Material Set of 8 Contact Pins (Standard) ET-KD-4815.001
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Additional Probes
Karl Deutsch Crack Depth Probe RMSL - 0° ET-KD-4416.001
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Karl Deutsch Crack Depth Probe RMSL - 90° ET-KD-4417.001
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Karl Deutsch Crack Depth Probe RMSL 90° Including Contact Magnet and Cable ET-KD-4420.001
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Karl Deutsch Crack Depth Probe RMSL 0° Including Contact Magnet and Cable ET-KD-4421.001
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Karl Deutsch Special Wide Probe, for Max. Crack Depth Width 7mm ET-KD-4498.004
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Karl Deutsch Special Crack Depth Probe RMSQ 0° Extended Shaft (100m) Includes:.1 Set of Contact Pins - 8 Pins (4815.001) with square arrangement of contact pins for measurement of normal cracks at very difficult to access locations. ET-KD-4498.010
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Karl Deutsch Special Crack Depth Probe RMSQ 90° 350mm, axial crack detection 90° right-angled probe with square arrangement of contact pins to measure particularly small, normal cracks in very narrow gaps. ET-KD-4498.007
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Accessories
Karl Deutsch PC and Printer Cable for 4015, RS232 ET-KD-1657.307
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Karl Deutsch Fitting Tool for RMG Probe Pins - 48015.00x ET-KD-4816.001
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Karl Deutsch Adapter USB (PC), RS232 Including Driver CD ET-KD-2691.001
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Karl Deutsch PC Software "iCom" for Data Administration ET-KD-2906.001
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Consumption Material
Karl Deutsch Consumption Material Set of 8 Contact Pins (Standard) ET-KD-4815.001
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Karl Deutsch Consumption Material Set of 4 Contact Pins (Needle) ET-KD-4815.002
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Karl Deutsch Consumption Material Set of 4 Contact Pins (Twister) ET-KD-4815.003
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Karl Deutsch Set of 8 Standard Pins for Probe 4498.007 ET-KD-4898.001
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Karl Deutsch Polishing Fleece for Reference Block (Set of 5 pcs.) ET-KD-4820.001
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