Process Engineering Division – Instrumentation and Automation Section – Daily Topics – Topic No. 2021-02-04

Now, integrated solutions that minimize wiring and reduce errors are preferred

Integrated temperature control is used, with a wide range

Depending on the specific operating conditions, the integrated temperature control is limited by the ambient temperature and installation height.

Now, integrated solutions that minimize wiring and reduce errors are preferred

1) The integrated temperature transmitter can communicate with the host computer via a HART modem, and it also enables remote information management, configuration, variable monitoring, calibration, and maintenance of the transmitter’s model, scale number, and range using handheld devices and PCs； 2) The integrated temperature transmitter allows the display direction of the transmitter to be adjusted according to the actual needs of the user, and it displays the temperature of the medium measured by the transmitter, changes in sensor values, output current, and percentage values ； 3) The integrated temperature transmitter features a silicone rubber or epoxy resin sealing structure, making it shock-resistant and moisture-resistant, and suitable for installation in harsh field conditions. 4) It is installed on-site in junction boxes for thermocouples and thermal resistors, providing direct output signals of 4-20mA or 0-10mA. This not only saves on the costly cost of compensation wires but also enhances the resistance to interference during long-distance signal transmission ； 5) The thermocouple transmitter features automatic cold junction temperature compensation ； 6) High precision, low power consumption, wide operating temperature range, and stable and reliable performance ； 7) It has a wide range of applications: it can form an integrated on-site installation structure with thermocouples and thermal resistors, or it can be used as a functional module installed in testing equipment and on dashboards ； It operates on the principle of measuring hydrostatic pressure. This transmitter operates on the principle of measuring hydrostatic pressure. It generally uses a silicon pressure sensor to convert the measured pressure into an electrical signal; this signal is then amplified by an amplification circuit and corrected by a compensation circuit, before being output as a 4–20mA DC electrical signal. Generally, an integrated option is chosen

Personally, I think an independent temperature controller is better; it can be installed in a location with favorable conditions, which facilitates inspection and maintenance. On the other hand, an integrated temperature controller is affected by the conditions at the installation site, making it prone to failures, and it is also not easy to service in environments with poor conditions.

Depending on the specific operating conditions, the integrated temperature control is limited by the ambient temperature and installation height.

Existence implies rationality; each has its advantages – the former is convenient and advanced, while the latter is inexpensive.