Cure Time T90 manufacturer takes you to understand the importance of T90 measurement value
The Cure Time T90 manufacturer tells you that it takes time for the sensor to fully respond to the hazards of atmospheric gases. To understand why you need to wait, consider an electrochemical sensor used to detect toxic gases. These sensors consist of a working electrode, a counter electrode and a reference electrode. The manufacturer of Cure Time T90 tells you that when gas diffuses through the polytetrafluoroethylene (PTFE) membrane of the sensor and hits the working electrode, a reaction occurs, in which electrons flow from one electrode to the other, generating a current proportional to the gas concentration . The gas detector displays the output of this current based on the previous calibration, and you can treat it as a gas reading.
So how long does it take for these sensors to react to the gas? The manufacturer of Cure Time T90 tells you to use a value called T90. T90 is the amount of time required for the sensor to reach 90% of the target gas concentration. There are many variables to determine the length of time, but it depends mainly on the gas and sensor manufacturer. The T90 of the gas detection sensor can be 15, 17 or even 30 seconds. Because of this, some gas detector manufacturers use T90 with a total time of 30 seconds. This covers all sensors in the standard four-gas detector.
It is important to remember that the T90 measurement gives us 90% of the reading, not 100%. The manufacturer of Cure Time T90 tells you that this is good for checking pipelines and machines for leaks or for toxic gases in the exhaust. If the meter is placed around a pipe or machine within the duration of T90 (30 seconds), but there is no discernible reading, it can be said with certainty that there is no leakage at that location. The manufacturer of Cure Time T90 tells you that if you do get a reading while checking for leaks, you should wait for a 100% full reading from the sensor. This usually takes two minutes.
After two minutes, the sensor electrolyte is completely saturated with the target gas, and the final reading is given. Regardless of the response time, when any alarm set point is met, the instrument will alarm due to changes in conditions.
The Cure Time T90 manufacturer tells you that although we want to complete this work as soon as possible, we need to do it safely. This applies to a wide range of safety areas outside of gas detection. The manufacturer of Cure Time T90 tells you that if we can't take the time to accurately read the data with a gas detector, we can't do it safely. Giving your gas detector time to process gas readings can save your life.