This test is more commonly known as a bump test. This test requires that the pump be stopped and impacted using a block of wood or a large hammer that has a soft tip (modal hammer). The bump test provides a response curve that will identify the
OSHA defines a bump test as "a qualitative function check in which a challenge gas is passed over the sensor(s) at a concentration and exposure time sufficient to activate all alarm settings."
In simple terms, a bump test is a functional test of the gas monitor to ensure that the sensors will respond to their target gas and that the alarms will function. This is performed by briefly exposing the sensors to their target gas. Bump testing should be performed before each day's use.
In this test, usually performed after an electric motor has been replaced and reconnected, the motor's motor starter is quickly started to observe the direction of rotation of the electric motor output shaft to be sure it is running in the proper direction.
This test is more commonly known as a bump test. This test requires that the pump be stopped and impacted using a block of wood or a large hammer that has a soft tip (modal hammer). The bump test provides a response curve that will identify the natural frequency and/or frequencies of the pump.
For example, during a bump test, a CO sensor is exposed to a known quantity of CO gas in order to make sure it responds by going into alarm. You're literally "bumping" the monitor with the target gas to make sure it does its job.
To clarify this issue, ISEA updated its position statement on instrument calibration in 2010, stating, "A bump test . . . or calibration check of portable gas monitors should be conducted before each day's use in accordance with the manufacturer's instructions." If an instrument fails a bump test or a calibration check ...
The test is "positive" if there is a bump of a certain size where the fluid was injected. This means you probably have TB germs in your body.
The Bump Method online program was designed with an expert Pelvic Health Physiotherapist to support health and fitness during pregnancy and postpartum recovery. We combine Pilates, functional movement and the latest in pelvic health research, all into a trimester-specific full body workout.
The bump rule or breakout rule will be applied to Gold, Silver and Bronze division racers that earn a handicap during the first day of competition that is outside of the handicap range of their qualifying division.
A bump test verifies the sensor and alarm functionality by briefly exposing the sensors to a known concentration of gas, ensuring they respond correctly. On the other hand, calibration adjusts the sensors to measure gas concentrations accurately, compensating for sensor degradation over time.
Calibration Frequency and Best Practices
While OSHA's guidelines may differ, most manufacturers recommend bump testing before each day's use and calibrating monthly. This helps ensure that your gas monitor performs accurately.
The bump strategy is when the number closest to ten ŐĞƚƐ ŝŵƉĂƟĞŶƚ to start the ƐƵďƚƌĂĐƟŽŶ process. The other number must adjust to compensate.
The bump-and-hole method is a tool in chemical genetics for studying a specific isoform in a protein family without perturbing the other members of the family.
A bump test is a simple process where you expose sensors in a gas detector to an expected concentration of gas that is greater than the alarm set points. If everything is working as expected, the gas detector will go into alarm.
Bump testing is where a detector is exposed to a target gas at an exposure time and concentration that is high enough to trigger all alarm indicators. The user then simply makes sure that the alarms have been activated. This verifies that all of the alarms are working and that the gas can reach the sensors.
If the bump test fails, a full calibration must be performed. All bump tests and calibration functions should be noted in a log book. The procedure for calibrating the sensors should be simple, repeatable and economical.
The phrase actually comes from the days when canaries were the most sophisticated gas detection systems out there. Miners would literally bump the small birds to make sure they were still alive since the canaries' only function was to die when gas levels in mines became unsafe.
The Bump Test or Impact Test, is a method for analysing the structural modal response of a machine or structure. When impacted, a machine or structure produces a broad frequency band of excitation components.