The working principle of the patrol instrument is to measure each input channel sequentially, and the measured results are put in the data buffer for display and communication.
The advantage is that it can minimize the size of the measuring device and reduce the integration cost.
The measuring speed of the Temperature Inspection Instrument is 0.2 seconds per channel (the CHL series thermocouple input channel is 0.2 seconds, other signal input channel is 0.1 seconds, which is faster than other series).For example, in the case of 16 channels, the tour is once in 3.2 seconds, that is, for each channel, it is measured once every 3.2 seconds.
● When working in the fixed-point mode, the method of recurrent interval measurement is adopted to take into account the fast measurement of fixed-point channel and the normal detection of other channels.
At this point, the fixed-point channel is measured once every 0.4 seconds, and the measurement speed of other channels is 1 times slower than the non-fixed-point method.
The interval of tour display is set independently, from 0.5 seconds to 10 seconds. The data displayed is from the buffer of measured values, which is not synchronized with the measurement.
The measured value read from the communication interface comes from the measured value buffer and is not synchronized with the measured value.
● Alarm processing is every measurement 1 channel processing 1 time, and the measurement is synchronous.