so-calledTemperature TransmitterIt is the process of converting thermistor, thermocouple, resistance, and millivolt signals into standard two-wire 4-20mA and transmitting the signals to equipment in the control room. It is generally used in industrial sites.

When the range of a traditional temperature transmitter needs to be changed, it is generally adjusted by zeroing and filling two potentiometers, but these two potentiometers are the main culprits causing large temperature drift in the product. With the advancement of technology, due to the tedious debugging and poor comprehensive performance indicators of traditional analog temperature transmitters, they can no longer meet the needs of on-site users, factory spare parts requirements, and sensor production plant stocking needs.

Therefore, intelligent transmitters were born, one of which is to use CUP in the product to digitize the signal. During debugging, dedicated software is installed on the PC, and data cables and modems are used to change the range and division mark of the temperature transmitter; Another approach is to embed a HART communication board into the smart product itself, and use a HART protocol controller to change the temperature range and scale of the temperature transmitter; There are also two types of temperature transmitters, namely PA protocol and FF protocol, whose principles are similar to the HART protocol. The application of HART, PA, and FF communication protocols is more convenient for product programming (regardless of location), but it will increase the price of the product itself and impose a burden on the owner.

Traditional temperature transmitters, PC programmed temperature transmitters, and HART programmed temperature transmitters are the preferred methods for most factories. However, after using these methods on site for many years, users often complain that debugging is still too complicated. It is impossible for every worker to be equipped with a PC, and even if there is a PC, they may not be able to use it because the debugging software from different manufacturers is not unified and very complicated; Many factories are also not equipped with HART controllers, which often makes it inconvenient to adjust the range of the transmitter. Is there a product that can change this situation?

After nearly 30 months of visits, ideation, and trial production, the product finally passed the assessment of various indicators, especially the lightning protection and pulse train experiments, which were very good; It also meets the matching needs of on-site users and sensor manufacturers; It is an intelligent product that is easy to operate. It even requires only a screwdriver to change the range of the temperature transmitter by changing the position of the encoder, making it a micro innovation.