Digital communication in sample gas processing

2022-08-13 09:54:49 By : Ms. Rain Lu

The TC-MINI sample gas cooler is typically intended for compact or portable gas conditioning systems that are designed for a sample gas with low dew points and flow and provide a 24 V DC supply.Cooler range from Bühler Technologies (Image: Bühler Technologies GmbH)With the option of the Modbus RTU digital interface, the user now has direct access to the process and diagnostic data, for example the current cooling block temperature or information about a possible temperature error if this is outside the target range.During the extraction of sample gas from the process, process-related impurities such as particles or moisture are inevitably also extracted.These can affect the measurement results or damage the measuring cells.The sample gas must therefore be prepared before it enters the analyzer.To remove moisture, the gas temperature in the sample gas cooler is lowered below the dew point.The resulting condensate is discharged.The cooler is controlled by a microprocessor.Falling below or exceeding the set warning range (e.g. after switching on) is signaled both by the flashing of the LEDs and by the status relay.The status output can e.g.B. can be used to control the sample gas pump to enable the gas flow to be switched on only when the permissible cooling range is reached.By connecting a humidity sensor, the controller can be expanded to monitor condensate breakthroughs.Until now, the measured cooling block temperature could be transmitted via an analogue 4 - 20 mA signal.As digitization continues to advance rapidly, Bühler Technologies GmbH will in future make the more advanced Modbus RTU communication protocol available as an option for all sample gas coolers with semiconductor cooling elements.This digital interface provides a higher authority such.B. the control system has extended information about the sample gas cooler.With the option of the Modbus RTU digital interface, the user now has direct access to the process and diagnostic data, for example the current cooling block temperature or information about a possible temperature error if this is outside the target range.If a humidity sensor is connected, e.g.B. a moisture breakthrough can be determined directly from the control station.All settings that could previously be made via the menu on the display of the sample gas cooler can now be made remotely from the control room and directly during operation.The condensate pumps can be activated and deactivated again as required, the setpoint of the cooling block temperature can be adjusted and the alarm thresholds can also be set remotely.New functions are also the output of the cooler's utilization (in %), which is helpful for evaluating the performance limit, and the output of the device runtime, which can be used to implement maintenance intervals.Modbus RTU is considered a very robust interface and enables remote access to the sample gas cooler to control and monitor the current status, robust and reliable communication between field devices and the control system and thus supports safe and continuous process and plant operation.The following sample gas coolers are available with Modbus RTU: All coolers of the TC series (Standard, Double, MIDI) as well as the RC 1.1 and 1.2+ modelsFor more information, visit the Bühler Technologies corporate websiteI agree to being informed by chemietechnik.de via email about magazines, online offers, products, events and downloads from the industry media network.I also agree to the evaluation of my use of the newsletter to optimize the product range.I can revoke this consent at any time with effect for the future by unsubscribing from the newsletter.I have read and acknowledged the data protection information.By registering, I accept the terms of use of the portals in the industry media network.I have taken note of the data protection declaration.RWE has already invested 2 billion euros in 2022, with which the energy group has expanded its portfolio around renewable energies.By the end of the year, this sum is expected to increase to 5 billion euros.Read more...Proleit's Plant iT Batch Orchestration System (BOS) is equipped for all batch management requirements.Read more...Due to the current energy crisis, diesel fuel will be used primarily for production and cleaning services for maintenance will be postponed.However, regular maintenance is the be-all and end-all for proper system operation.But it is also possible without diesel fuel and drinking water consumption.Read more...Afriso-Euro-Index presents the revised pressure transmitter DMU 13 Vario, a further development of its predecessor DMU 13, with, among other things, a significantly larger measuring range.Read more...Henkel's venture capital arm invests in Direct-C to expand its maintenance, repair and overhaul (MRO) business.The start-up has developed sensor technology for the early detection of leaks in liquid hydrocarbons.Read more...