The UE 12 Series - SIL 2, 316 SS, Pressure, Differential Pressure & Temperature Switches

The United Electric 12 Series hazardous location switches are excellent for use in demanding settings where space is limited. In most models, a snap-action Belleville spring assembly offers vibration resistance and extended switch life. In addition, the 316 stainless steel shell and hermetically sealed switch provide rugged environmental protection. 

UE 12 SERIES FEATURES

• UL, cUL, ATEX and IECEx approved for Div. 1 or Zone 1 hazardous locations; CE compliant
• Dual seal compliant to ANSI/ISA 12.27.01 & NEC 501.17
• Many models compliant to NACE MR0175.
• Snap-acting Belleville spring for long life, vibration resistance and stability
• Optional Hastelloy and Monel  sensor material for corrosive media
• Mounting bracket available for retrofit applications
• 72" leadwires
• 3-year warranty

For more information, contact Ives Equipment.
877-768-1600
https://ivesequipment.com

Refinery Gas Analyses Using Compact Gas Chromatographs and Gas Detectors

The analysis of trace permanent gases has many different fields of application in the petrochemical industry. One of the most important is for controlling the manufacturing process and the product quality. For example, some contaminants as carbon monoxide and carbon dioxide tend to deteriorate the catalysts in the propylene and ethylene polymer grade production.

An instrument for monitoring trace impurities is then required. Many different GC techniques are available on the market. Most of the techniques use a combination of TCD, FID and methanizer for the trace analysis of H2-O2-N2-CH4-CO-CO2 in propylene and ethylene. More precisely, an FID and a methanizer are used to trace CH4-CO and CO2. A TCD with Hydrogen or Helium carrier gas is used to trace O2-N2 detection. Finally, a second TCD with Argon or Nitrogen carrier gas must be added to trace H2 detection. These solutions require complex GC solutions with multiple detectors and multiple gas sources for carrier, fuel and air. On top of that, an FPD must be added in some cases when the trace analysis of H2S is required.

Read the application note below for more information. Contact Ives Equipment at (877) 768-1600 or visit http://www.ivesequipment.com for a consultation.

Refinery Gas Analyses with Multidetek2 Compact Gas Chromatograph and Plasmadetek2 Gas Detector from Ives Equipment