Table of Contents
Advertisement
Cooling a detector
If you have an MCT detector, you must cool it with liquid nitrogen before you can collect data.
Time needed: 40 minutes or less
Tools needed: Protective clothing and eyewear
A small plastic laboratory funnel
A one-liter, metal vacuum bottle
Liquid nitrogen
Note: A detector dewar should maintain its insulating vacuum for several years. If the
vacuum leaks, the insulation will lose effectiveness.
Note: Your MCT detector, when cooled according to the following procedure, should remain
cool for approximately six hours.
Warning:
Liquid nitrogen is extremely cold and can be hazardous. When you use liquid
nitrogen, always follow standard laboratory safety practices, and make sure your dewar is
made to use with liquid nitrogen. Wear protective clothing and eyewear, and avoid letting
liquid nitrogen come into contact with your skin.
1.—Open the detector dewar cover and remove the plastic stopper from the dewar.
Warning:
Make sure you pour the liquid nitrogen slowly when you fill the vacuum bottle or
the detector dewar. Pouring too quickly can cause liquid nitrogen spray out. Wear protective
clothing and eyewear, and follow standard laboratory safety practices to prevent injury.
2.—Fill the metal vacuum bottle with liquid nitrogen.
Thermo Fisher Scientific
Using Your Nicolet iZ10 Module
11
Advertisement
Table of Contents
