How to calibrate the response time of the SF6 leak detector?
The concentration of the person is about 60% of the standard gas at full scale. After the value to be stabilized is stabilized, the stable indication value is read. Remove the standard gas, wait for the instrument to return to zero, then pass the standard gas of the above concentration, and start the stopwatch at the same time. Stop the stopwatch when the instrument indicates that the value reaches 90% of the stable indication. The measurement was repeated 3 times, and the arithmetic mean of 3 times was taken as the instrument response time. The response time of the instrument is less than 30s.
The 85W Macbook Charger MagSafe 1 or MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection.
When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel.
Designed to be the perfect traveling companion, the adapter has a clever design which allows the DC cable to be wound neatly around itself for easy cable storage.
This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery.
Compatible with MacBook Pro with Retina display.
Not sure if this is the right power adapter for your Mac?
See this article for more details about choosing the right one.
Knowing which specific Mac model you have is important.
Please contact with me, that I can tell you about your Mac model and generation will be displayed.
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