Network function enhances digital indicator

The enhanced UM33A is an easy to install and cost effective solution that enables the monitoring of data from multiple field sensors.

In recent years, there has been a growing need to strengthen the monitoring of data from field sensors. For safety and other reasons, operators need the ability to remotely monitor data from sensors that are installed high up, in confined spaces, and other locations where it is difficult to visually check the readings on the sensor displays.

The UM33A digital indicator that Yokogawa offered until now accepts analogue data from sensors that measure parameters such as temperature, pressure, and flow rate, converts this data into digital signals, and displays the readings. It can also issue an alarm if an input signal falls outside a preset range. However, it is only able to accept data from a single sensor.

To check data from multiple sensors, it is necessary to install and configure other equipment such as a touch panel with an embedded controller or some other type of user interface used in combination with a programmable controller (PLC).

This equipment is both expensive and requires large amounts of engineering.

Yokogawa has strengthened the functions of the UM33A to satisfy the needs of customers who want to check measurement data from multiple sensors in the field. The enhanced UM33A can be installed easily and at a lower cost.

The enhanced digital indicator supports the master function and the data monitoring function of the Modbus/RTU communication protocol, and is able to connect up to eight sensors and sequentially display data from those devices.

It is thus able to monitor data from multiple field sensors without requiring the installation and engineering of a separate device with user interface and controller functionality. It can also function alongside already installed systems that employ such specially configured hardware.

With its ability to remotely connect with multiple sensors throughout a site, the enhanced UM33A makes it easier for plant personnel to check measurement data from these devices.

In plants, progress is being made in the introduction of field digital solutions that rely on digital communications between intelligent field devices and control systems.

Field digital solutions allow the transmission of significantly greater amounts of data, including not only data on process parameters but also instrument status information. The ability to monitor this information online improves maintenance efficiency.

Thanks to its functional enhancements, the enhanced UM33A can handle both digital and analog communications with sensors, and is well positioned to facilitate the introduction of field digital solutions at plants.

Target markets are companies that design and manufacture machinery, air conditioning systems, power equipment, tanks, and other items for use in industries such as electrical equipment, machinery, chemicals, foods, semiconductors, and automobiles.

Applications include display of temperature, pressure, and flow rate; alarming; and display of operating conditions in heating, cleaning, sterilisation, cryogenics, refrigeration, wastewater treatment, and other manufacturing and R&D processes.