Electronics Forum | Thu May 08 21:13:59 EDT 2008 | davef
Glennbrook Technologies Cautionary Note on the Use of Geiger-Mueller Tube Devices: These are inexpensive radiation monitoring devices and it is possible, when they are calibrated to a Cesium-137 standard (at 600 keV), for the meter to read higher tha
Electronics Forum | Mon Jan 05 11:09:11 EST 2009 | davef
These are inexpensive radiation monitoring devices and it is possible, when they are calibrated to a Cesium-137 standard (at 600 keV), for the meter to read higher than the actual value at lower x-ray photon energies. [Glennbrook Technologies Caution
Electronics Forum | Fri May 18 10:43:32 EDT 2012 | davef
Umar Chapter 7 of IPC-HDBK-830, Guidelines for Design, Selection and Application of Conformal Coatings deals with compatibility of the different materials in the chain. Have you: * Tested your bare boards at incoming for cleanliness with your Omega
Electronics Forum | Thu Sep 11 18:44:31 EDT 2008 | smt_guy
We have an Ionic Contamination Testing system but short of having a monitoring record for the chemical concentration. What we have is a monthly maintenance check of the concentration and annual check and calibration of the chemicals. We seldom use th
Electronics Forum | Wed May 27 12:32:15 EDT 1998 | Earl Moon
| | | | | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | |
