There are many different types of analyzers that could be considered portable devices, so I'll provide some examples:
Gas Analyzers - These portable devices are used to measure the concentration of various gases in a given environment. They can be used in industrial settings, laboratories, or for environmental monitoring purposes.
Moisture Analyzers - These portable devices are used to measure the moisture content of a given material. They are commonly used in the food industry, as well as in pharmaceutical and chemical manufacturing.
pH Meters - These portable devices are used to measure the acidity or basicity of a solution. They are commonly used in laboratories, as well as in the environmental monitoring of bodies of water.
Spectrometers - These portable devices are used to analyze the composition of a given substance. They can be used to identify the presence of specific elements or compounds in a sample, and are commonly used in the field of forensics.
Particle Counters - These portable devices are used to measure the number and size of particles in a given environment. They are commonly used in cleanroom environments, as well as in industrial settings where air quality is important.
Portable analyzers are useful for on-site testing and analysis and are often used in field work where samples cannot be easily transported to a laboratory. They are also useful for applications where real-time data is needed, such as monitoring air quality in industrial settings.