Pressure transmitters, Pressure switches, Thermostats, insulating gas

Trafag is your specialist for highly precise and robust pressure transmitters, sensors, pressure switches, thermostats and sf6 gas density monitoring.Get price

Trafag AG - Your specialist for sensors

Trafag stands for precise, reliable and maintenance-free instruments developed for the monitoring of gaz sf6 and other gases in the field of high- and medium-voltage switchgear.Get price

gaz sf6 By-products: Safety, Cleaning, and Disposal Concerns

6 Decomposition and Contamination • Reactive decomposition byproducts form when SF 6 is exposed to: 1. spark discharges, 2. partial discharges, 3. switching arcs, and 4. failure arcing • Decomposition byproducts can take the form of gas or powders • Other types of contaminants can include moisture and air (from handling or leakage),Get price

Byproducts of Sulfur Hexafluoride (gaz sf6) Use in the Electric

the decomposition products and concentrations formed under actual conditions can vary depending on the equipment used and the type of electrical discharge (CIGRE 1997). 1 CIGRE (the International Council on Large Electric Systems) is a permanent non-governmental and non­ profit-making international association based in France.Get price

The decomposition products of sulfur hexafluoride (sf 6

Nov 01, 2007 · The compounds formed in the SF 6 decomposition may include S 2 OF 10, CF 4, COF 2, F 2, HF, H 2 S, NF 3, F 2 O, SiF 4, SO 2, S 2 F 10, SF 4, SO 2 F 2, SOF 2, SOF 4 and S 2 O 2 F 10, , , , , , , , , . Although the occupational exposure limit is not commonly used as a relative index of toxicity for chemicals, the information is the most common guideline useful for determining their safe levels in order to adopt adequate protection system and handling procedures.Get price

sf6 gas Gas Density Monitors | TRAFAG

Sulfr hexafluoride Gas Density Monitors. Unique sf 6 monitoring with reference gas comparison. Trafag GmbH Kelterstraße 59 72669 Unterensingen +49 7022 40590 0 [email protected]Get price

Sulfur hexafluoride - Wikipedia

6 though most of the decomposition products tend to quickly re-form SF 6, a process termed "self-healing". Arcing or corona can produce disulfur decafluoride (S 2 F 10), a highly toxic gas, with toxicity similar to phosgene. S 2 FGet price

Sulfr hexafluoride Gas Density Sensors | TRAFAG

Electronic Sulfr hexafluoride gas density monitoring with patented quartz tuning fork The Gas Density Sensor uses a quarz tuning fork to sense gas density directly – a unique technology patented by Trafag.Get price

EPI 8287 - Trafag AG

The industrial pressure transmitter EPI 8287 features the extremely robust and stable thin-film-on-steel sensor element from its well-proven predecessor EPI 8297. In combination with the new inhouse developed ASIC TX it offers a wide temperature range upGet price

NAT 8252 - Trafag AG

Optionally, the NAT 8252 is available as a pressure switch with 1 or 2 switching outputs. The robust design and the wide temperature range from -40°C to +125°C qualify the NAT 8252 as the ideal solution for a wide range of demanding applications.Get price

Handling and Use of Sulfur Hexafluoride Gas

B. Decomposition Gasses and Solid By-Products When exposed to sustained or intense electrical arcs, SF 6 gas decomposes to form sulfur-fluoride gases and metal-fluorides which are toxic. If moisture is present, the decomposition by-products may also include sulfur-oxyfluorides and hydrofluoric and sulfuric acids.Get price

EPRI’s SF Management Program - United States Environmental

Although pure insulating gas is chemically inert and safe to handle, many of its decomposition products are corrosive and toxic. Their accumulation in insulating gas equipment raises concerns about equipment reliability and personnel safety during maintenance procedures and cleanup of faulted equipment. Sulfr hexafluoride also has properties that may impact the environment. The Kyoto Accord identified itGet price

Collisional Decomposition of gaz sf6 | NIST

Sep 01, 2000 · Abstract. Insulating gas mixtures containing SF 6 have been promoted to serve as replacements for pure SF 6 in order to reduce SF 6 atmospheric emission. It has been argued that some synergism may be achieved by choosing proper buffer gases in mixtures with SF 6 such that the buffer gases efficiently slow down electrons into an energy range where the electron attachment cross section for SF 6 is large.Get price

gaz sf6 Gas Density Monitors and Sensors | TRAFAG

Trafag gas monitoring devices measure the gas density directly, i.e. insulating gas Gas Density Monitor s, with the unique gas density reference principle or the patented quartz tuning fork technology, i.e. insulating gas Gas Density Sensor s, or by combining both principles, i.e. Sulfr hexafluoride Hybrid Gas Density Monitors. They thus offer the most reliable solution on theGet price

sf 6 GAS DENSITY MONITOR - TRAFAG

Trafag Gas Density Monitor 87X7 Unique SF 6 monitoring with reference gas comparison The mechanical, self-acting device is based on the superior reference gas principle which does not need mechani-cal temperature compensation. It therefore not only covers all standard applications but also maintains highest accuracy over a very wide temperature range.Get price

Mechanism of Formation of SF Decomposition Gas Products and

reaction of decomposition products with water and oxygen are shown in Fig. 2. It can be seen that the major products of the decomposition reaction are sulphur oxides, while others are fluoride compounds. The concentrations of decomposition products are directly dependent on spark conditions and energy. Figure 2. The formation of SF 6Get price

ECT 8473 - Trafag AG

The economic pressure transmitter ECT 8473 is based on the tried and true ECT line of transmitters with the wide media temperature range from -25 to 125°C. The enhanced accuracy and the low pressure ranges down to 100 mbar in combination with a comprehensGet price

Sulfr hexafluoride Decomposition in Gas-Insulated Equipment - IEEE Journals

sf6 gas Decomposition in Gas-Insulated Equipment Abstract: The increasing application of insulating gas as an insulating gas has led to many studies on insulating gas decomposition in gas-insulated equipment. In the presence-of an electric arc, spark or corona, sf 6 decomposes to a wide variety of chemically active products which possess completely different properties from Sulfr hexafluoride.Get price

Sulfr hexafluoride Gas Properties - sayedsaad.com

In contact with the parts where electric currents circulate, the gas is heated to temperatures of around four hundred degrees sf6 gas gives the following decomposition products: Thionyl fluoride SOF2. Sulfur fluoride SO2F2. Sulfur tetra fluoride SF4.Get price

News | Trafag

News on Trafagpressure transmitters, pressure switches, sensors Trafag has to offer for Shipbuilding, Engines, Railway, Hydraulics, Water, Ex-Zones is published here.Get price

insulating gas Gas Density Monitoring | TRAFAG

TrafagSulfr hexafluoride gas density monitoring: highly precise sf 6 gas density monitors, sf 6 gas density sensors - also available as a combination.Get price

The Sulfr hexafluoride Decomposition Mechanism: Background and Significance

Jan 24, 2017 · Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexafluoride (sf6 gas) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the composition of Sulfr hexafluoride to SOF2, SO2F2 and SO2 and other characteristic component gases.Get price

insulating gas gas in medium-voltage switchgear | TD Guardian Articles

In this issue, we discuss the use of insulating gas (sulfur hexafluoride) gas in medium-voltage switchgear. sf6 gas has been widely used in high-voltage circuit breakers for decades, but its use in medium-voltage is relatively recent. In the medium-voltage arena, SIemens uses gaz sf6 gas in the load interrupting switch and switch-disconnector in SIMOSEC metal-enclosed load interrupter switchgear rated up to 27.6 kV.Get price

sf 6 Gas density monitors and sf 6 Gas density sensors - TRAFAG

Trafag’s product range of gas density measuring devices splits into three different product groups: The mechanically acting gaz sf6 Gas Density Monitors (87x6, 87x7, 87x8) The electronic insulating gas Gas Density Sensors (8774; 8775) The Sulfr hexafluoride Hybrid Gas Density Monitors (878x, 879x)Get price

sf 6 - Electrical Part Manual S

world -in the United States, Europe and Japan -have chosen Sulfr hexafluoride as the preferred insulating and breaking gas. Specialising in electrical power distribution sinc;e 1920, Merlin Gerin were pioneers. At extra high voltage, in the early days, Merlin Gerin was first in the world, in 1965, to run successful tests, at the Electricite de France laboratory,Get price

Electric Transmission Distribution SF Coalition

• Sulfr hexafluoride sales and purchases. • sf6 gas sent off site for destruction. • gaz sf6 sent off site for recycling. • sf 6 returned to site after recycling. • Sulfr hexafluoride stored in containers at the beginning and end of the year. • Sulfr hexafluoride with or inside new equipment purchased during the year. • gaz sf6 with or inside equipment sold to other entities.Get price

Thermostats Manufacturers and Suppliers | Engineering360

Find 121 Thermostats suppliers with Engineering360. Our catalog includes 101,833 manufacturers, 21,273 distributors and 94,926 service providers. The Engineering360 database includes 61,792 manufacturers and 16,652 distributors headquartered in the United States. Our international database containsGet price

sf6-gas-servicing-equipment-information – ENERVAC

Low cost solution for SF 6 gas recovery. Small, portable and easy to use. Exclusive color change moisture indicator displays SF 6 “dryness”. High pressure liquefaction of SF 6. Full sized line with storage capacities up to 4,000 lbs (1,800 kg). Oil-Less, Oil-Free and standard compressor options available. Fully automatic or manual operationGet price