Frequently Asked Questions

Calibration is the process of comparing measurements or readings taken by a device or instrument to a known standard in order to ensure accuracy and reliability. It involves making adjustments or corrections to the instrument's settings or readings so that they align with the known standard. Calibration is typically performed regularly to maintain the accuracy and integrity of the instrument's measurements. 

A bump test is a quick and simple test performed on gas detection equipment, such as portable gas monitors or fixed gas detection systems. The purpose of a bump test is to verify that the sensors and alarms of the gas detectors are functioning correctly and providing accurate readings.

During a bump test, a small amount of gas is momentarily exposed to the sensors to ensure they respond and trigger the appropriate alarms. This test is usually done with a gas cylinder containing a known concentration of the target gas or a calibration gas specifically designed for bump testing. The gas is introduced near the sensors, and if the detectors respond as expected, it indicates they are functional and calibrated properly.

It is important to note that a bump test is not the same as a calibration. Calibration involves adjusting the gas detector to make it accurately measure the desired gas concentrations, while a bump test only confirms that the sensors are still responsive and triggering alarms when exposed to the target gas. A more comprehensive calibration may still be required periodically for accurate gas detection.

The calibration frequency for a gas detector may vary depending on the model and manufacturer's guidelines. However, as a general recommendation, it is advisable to calibrate gas detectors at least once every three to six months to ensure accurate readings. Additionally, it is important to follow any specific guidelines provided by the manufacturer to maintain the detector's performance and reliability.

Bump tests are typically recommended to be conducted on a daily basis before each day's use or at the beginning of each shift. Regular bump testing helps ensure that gas detectors are functioning properly and can accurately detect hazardous gases. However, it's always best to consult the manufacturer's guidelines or follow any applicable regulations for specific requirements regarding bump testing for your particular gas detection system.

Calibration gas is a type of gas used to calibrate and test gas detection equipment. It is typically a gas mixture with known concentrations of specific gases. Calibration gas is used to verify that gas detectors are functioning accurately and can accurately detect and measure the target gases.

To use calibration gas, you will need to follow the instructions provided by the gas manufacturer and your gas detection equipment's user manual. Generally, the gas is introduced into the detection system, and the readings from the detector are compared to the known concentration of the target gas in the calibration gas.

Calibration gas can be purchased from various suppliers and is available in different sizes and concentrations. Before purchasing, ensure that you select the correct gas mixture that matches the target gases you need to calibrate your equipment for.