Contact

Determination of depth and orientation of surface cracks

Our new crack depth gauge RMG 4015 measures crack depths on workpieces of iron, ferrous and austenitic steels and can also be used for cracks in copper, brass, aluminium and other non-ferrous metals. For the measurement of oblique cracks a special oblique cracks probe is available.

Measurement according to the potential probe principal

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, where the crack depth is derived from. The a.c. of the instrument utilizes the skin effect, which forces the current flow to 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. Incorrect handling or faulty measurements caused by wrong attachment or imperfect contacts therefore are out of question.

Measurement of oblique cracks

In addition to common cracks running in most cases perpendicularly to the surface, the real life often shows oblique cracks, where usually it is not the expansion of the cracks which is of interest, but the oblique orientation and the projection with reference to the surface. If you know these measures it can be decided whether the post-treatment of a workpiece with cracks is technically possibly and economically reasonable. Therefore the instrument was equipped with an additional measuring function for the determination of oblique cracks, which permits to determine the inclination of the crack with respect to the material surface. The measurement is executed by means of an special four-pin probe, which permits to connect an external current pole which can be positioned left and alternatively right to the crack. Via the differences of the readings and the crack depth measured as well, the meter reliably will determine the inclination and the projection perpendicularly to the surface. Measurement is possible on all common magnetic and non-magnetic steels, with certain restrictions also on many non-iron metals. Thus the new pocket-sized instrument for crack measurement may be used universally for all types of naturally occurring cracks.

Interface for printing and connection to a PC

Via the RS232 interface, test reports can be printed on small-sized printer (available as accessory) or the instrument can communicate with a PC. For this purpose, the PC program iCom is available, which not only acquires the measured values, but also offers data administration and graphical display. Furthermore, test reports or other documentations can be created.

Downloads

This website uses cookies

We use cookies to personalize content and advertisements, to be able to offer functions for social media and to analyze access to our website. We also share information about your use of our website with our social media, advertising and analytics partners. Our partners may combine this information with other data that you have provided to them or that they have collected as part of your use of the services.

Our cookies have changed, so you will need to give your consent again.

Your previous consent to our cookies has expired, so you will need to consent again.

Necessary cookies help to make the website usable for the user. They store basic information, such as a login to the website or the consent to the individual cookies.

Name Provider Purpose Duration Type
__hs_opt_out HubSpot notwendig

This cookie is used by HubSpot to ensure that a user after an opt-out does not have to ask for consent again.

13 months Cookie
__hs_do_not_track HubSpot notwendig

This cookie is used by HubSpot to disable the tracking of a user.

13 months Cookie
__hs_initial_opt_in HubSpot notwendig

This cookie is used by HubSpot to store the consent to tracking.

7 days Cookie
hs_ab_test HubSpot notwendig

This cookie is used by HubSpot to always assign a user to the same group during A/B tests.

Session Cookie
*_key HubSpot notwendig

This cookie is used by HubSpot to prevent a user from having to log in multiple times for the same content.

14 days Cookie
hs-messages-is-open HubSpot notwendig

This cookie is used by HubSpot to save chat widget settings.

30 minutes Cookie
hs-messages-hide-welcome-message HubSpot notwendig

This cookie is used by HubSpot to ensure that the welcome message of the chat is displayed once a day.

1 day Cookie
__hsmem HubSpot notwendig

This cookie is used by HubSpot to store the login process of a user.

1 year Cookie
hs-membership-csrf HubSpot notwendig

This cookie is used by HubSpot to prevent a login process from being corrupted.

Session Cookie
hs_langswitcher_choice HubSpot notwendig

This cookie is used by HubSpot to store the language selected by the user.

2 years Cookie
__cfduid HubSpot notwendig

This cookie is used by HubSpot to securely transfer data via CDN / Cloudfare.

Session / 30 days Cookie
__cfruid HubSpot notwendig

This cookie is used by HubSpot to securely transfer data via CDN / Cloudfare.

Session Cookie
gits_cookie_accepted_* digiwerk GmbH

Saves the cookie banner selection.

unlimited LocalStorage
DataTables_* TYPO3

Is stored by the CMS system TYPO3 vebSaves user settings for displaying data in the backend.

unlimited LocalStorage
t3-tabs-* TYPO3

Saves user settings for displaying data in the backend.

unlimited LocalStorage
be_typo_user TYPO3

Required by the CMS system TYPO3 to allow users to log on to the backend.

1 year LocalStorage
PHPSESSID TYPO3

Required by the CMS system TYPO3 to allow users to log on to the backend.

1 year Cookie

Marketing cookies help to recognize visitors to websites. This enables, among other things, to show them more accurate advertisements and search results.

Name Provider Purpose Duration Type
__hstc HubSpot

This cookie is used by HubSpot to register a unique ID that can be assigned to statistical data of the user.

13 months Cookie
hubspotutk HubSpot

This cookie is used by HubSpot to register a unique ID that can be assigned to statistical data of the user.

13 months Cookie
__hssc HubSpot

This cookie is used by HubSpot to detect the session of a user.

30 minutes Cookie
__hssrc HubSpot

This cookie is used by HubSpot to detect the session of a user.

Session Cookie

Statistical cookies help to understand how visitors interact with the site by collecting and reporting information anonymously.

Name Provider Purpose Duration Type
_pk_id.*.* Matomo

This cookie is used by Matomo to store some details about the user, such as the unique visitor ID.

13 months Cookie
_pk_ses.*.* Matomo

This cookie is used by Matomo, for short-lived cookies, which are used for temporary storage of data for the visit.

30 minutes Cookie
_pk_testcookie..undefined Matomo

This cookie is used by Matomo to check whether the visitor’s browser supports cookies

Session Cookie

Cookies are small text files that are used by websites to make the user experience more efficient.According to the law, we can store cookies on your device if they are absolutely necessary for the operation of this site. We need your permission for all other types of cookies.This site uses different types of cookies. Some cookies are placed by third parties that appear on our pages.