Electro-mechanical switches, Manufacturing, Plant Safety, Safety Relays on Transmitters, Transmitters

The One Series Safety Transmitter for Increased Plant Safety

united electric safety transmitter

The power generation market is beginning to emphasize the importance of plant safety. This was made clear to all attendees during the keynote session at the Power-Gen International Show in Orlando held in early December. Ms. Kimberly S. Greene, executive VP and COO of Atlanta-based power generation Southern Company made a passionate plea for better safety standards within plants that fall under the Southern Company umbrella, and to begin thinking about plant safety and investing in safety automation technology to provide some solutions. According to Ms. Greene, Southern Company facilities sent 300 workers home with workplace injuries in 2014.

In one case this year, a 44-year employee died on the job, causing Ms. Greene to make an emotional plea to all attendees and plant managers to move safety to the top of their priority lists. For the power generation market, plant safety has not (yet) received the same level of attention when compared to the hydrocarbon processing market. Ms. Greene’s statistics reminded us all that functional safety must be considered across many industries that include harsh and hazardous operating conditions and processes.

The One Series Safety Transmitter is a pressure and temperature monitoring transmitter-switch that provides a NAMUR NE 43 standard 4-20 mA analog output. Its programmable high-capacity solid-state safety relay output enables the fastest emergency shutdowns in the industry.

The One Series Safety Transmitter was designed with features that simplify installation, improve productivity, and eliminate nuisance trips. The instrument is password protected to prevent unwanted parameter changes; eliminating the risk of tampering. The large backlit digital display provides process variable, status, self-diagnostics and field programming information.

Some of the advantages of using UE’s safety transmitter are:

  • ​4-20 mA analog output with field scaling capability
  • ​100% programmable high-capacity safety relay for switch mode, set point & deadband
  • ​Effectively replaces a gauge, transmitter, and a switch to reduce potential leak paths
  • ​Additional discrete outputs to facilitate voting logic schemes
  • ​The industries highest safe failure fraction (SFF) of 98.8% as certified for use in SIL 2 by exida

For more information on UE’s One Series Safety Transmitter, please visit our website at www.ueonlone.com or call our application engineers at +1 (617) 923-6977. You can also write us at TechSupport @ueonline.com.

Cyber Security for Instruments, Manufacturing, Plant Safety, Transmitters

The One Series UUC Feature: Keeping your Safety Secure

Most great ideas or inventions don’t reach perfection overnight; Rome wasn’t built in a day, as they say, and everything from the light bulb to the iPhone has seen improvements and innovations.

Oftentimes, improvements are made through trial and error—other times they come from customer feedback and changing needs. At United Electric Controls, we strive to make the best products of their kind, and often changes and improvements come from those who use them every day: our customers.One Series Safety Transmitter

This was the case for our One Series Safety Transmitter, a unique, groundbreaking product that goes beyond all other safety sensors, solving many of the problems related to the design, operation, maintenance, and modernization of a Safety Instrumented System (SIS).

The One Series Safety Transmitter was carefully designed to meet the requirements outlined in IEC 61508 and simplify SIS design. When first introduced, previous versions of the One Series didn’t include a passcode feature. While it was extremely easy to program and use, the One Series relied on a 2-minute timeout to safeguard critical settings. Many of our customers found the need for additional security in the form of a passcode. When we asked our customers how they managed their passcodes for safekeeping and quick access, a common practice they described was to record the number on the wall next to the instrument, negating the purpose. There certainly must be a better way…

We listened to our customers’ needs and answered accordingly, creating a feature that allows users to get into programming mode after inputting a four-digit passcode. We also designed the One Series Safety Transmitter so that if a user doesn’t know how to save the settings, there is a two minute timeout. Close, but not there yet.

We then found that issues would arise if users lost or forgot their passcode. Thus, the Unique Unlock Code (UUC) feature was created. With the UUC, customers visit a website, which asks specific questions. They must enter their unique Kanban number—similar to a serial number—and the UUC feature performs a mathematical operation delivering a unique four-digit code, which will only unlock their particular instrument; the UUC will always and only work on that one unit. As long as the device is in a secure area, this technology ensures their transmitter is as secure as it is safe.

After all, you can’t have safety without security, and with all of the features of the One Series Safety Transmitter, you have both.