Instrument for on-line measurement of concentration of TMC (trimesoyl chloride) in organic solution

The utility model discloses an instrument for online measurement, and in particular relates to an instrument for online measurement of the concentration of TMC (trimesoyl chloride) in an organic solution. The instrument comprises a computer, a power supply and a fiber-optic probe, wherein the instrument is provided with a main circuit which is connected with the power supply and is also connected with an attached circuit of a mainframe of a spectrograph; meanwhile, the main circuit is connected with a flashing xenon lamp which is connected with the fiber-optic probe through optical fibers; the fiber-optic probe is connected with a slit in the mainframe of the spectrograph by energizing a flow cell; the spectrograph is connected with the computer. The instrument can be conveniently used for the on-line measurement of the concentration of the TMC in the organic solution, and is convenient to operate and relatively accurate. Thus, the human cost is saved.