In that statement, the organization was careful to flesh out the differences between a bump test, calibration check, and full calibration as well as advise how and when to test with each method. Defining Differencesĭirect-reading portable gas monitors fall under the responsibilities of safety equipment trade organization the International Safety Equipment Association (ISEA), which released a 2010 statement to improve consistency in how people use, test, and maintain DRPGMs. The main difference between a bump test and calibration is that a bump test determines whether a DRPGM can detect if a possibly hazardous gas is present, while calibration checks that equipment is accurate.īut it’s a little more complicated than that, and getting to know more about bump tests, the two types of calibration, and related best practices can help you keep these distinctions top of mind-and use them correctly. ![]() But if you were given an on-the-spot pop quiz on the subject, could you tell the difference between these terms? ![]() ![]() If you work with direct-reading portable gas monitors (DRPGMs) to check oxygen levels and look for toxic or combustible gases, you’re likely familiar with the concepts of bump testing and calibration.
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