News Center
High-precision sulfur hexafluoride Measurement for gas measurement

High-precision sulfur hexafluoride Measurement for gas measurement

HTJL-H High Precision SF6 Gas Leak Detector. The leak detection of the equipment and container filled with sulfur hexafluoride can be done quickly and accurately qualitatively and quantitatively. High sensitivity, good stability, fast response, no toxic probe, no toxic gas Added alarm setting function

[email protected]
News Detail
  • Viscosity Measurements on Gaseous Sulfur Hexafluoride

    Abstract. A vibrating-wire viscometer of very high precision was used to measure the viscosity coefficient of gaseous sulfur hexafluoride. The experimental data were taken at subcritical temperatures of (300 and 316) K up to 90% of the saturated vapor pressure and at supercritical temperatures of (321, 333.15, 350, 375, 400, and 425) K at pressures up to 20 MPa.

    Get Price
  • Viscosity Measurements on Gaseous Sulfur Hexafluoride

    Some years ago Wilhelm et al. 5 designed a vibrating-wire viscometer and performed high-precision measurements on argon, krypton, and propane 6,7 and, recently, on sulfur hexafluoride. 8 A special...

    Get Price
  • Htjl-V High Precision Sulfur Hexafluoride Quantita - SF6 Expert

    HTJL-V high-precision SF6 gas leak detector uses imported sensors from Germany and infrared dual-wave measurement technology. The measurement results are more accurate and the stability is better. The instrument is portable, and the probe and the host are split. Htjl-H 0.01ppm-500ppm High Precision Sulfur Hexafluoride.Get Price!

    Get Price
  • Analysis of Sulfur Hexafluoride in Air

    The sulfur hexafluoride analysis system is described in Hall et al. (2007) and Hall et al. (2011). Briefly, gas samples are loaded into a fixed-volume, stainless steel sample loop by flushing the loop, and then injected onto a series of packed columns using a multi-port valve.

    Get Price
  • A rapid method for the measurement of sulfur hexafluoride

    Abstract. A rapid headspace method for the simultaneous laboratory determination of intentionally introduced hydrologic tracers, sulfur hexafluoride (SF 6 ), trifluoromethyl sulfur pentafluoride (SF 5 CF 3 ), Halon 1211 (CF 2 ClBr), and other halocarbons in water and gases is described. The high sensitivity of the procedure allows for introduction of minimal tracer mass (a few grams) into hydrologic systems with a large dynamic range of analytical detection (dilutions to 1:10 8 ).

    Get Price
  • Sulfur hexafluoride - Wikipedia

    Typical for a nonpolar gas, SF 6 is poorly soluble in water but quite soluble in nonpolar organic solvents. It has a density of 6.12 g/L at sea level conditions, considerably higher than the density of air. It is generally transported as a liquefied compressed gas. The concentration of SF 6 in Earthtroposphere reached 10 parts per trillion in year 2019, rising at 0.35 ppt/year. The increase over the prior 40 years was driven in large part by the expanding electric power sector, including fugi

    Get Price
  • Improving Atmospheric SF6 Measurements: Towards a Better

    The global burden of sulfur hexafluoride (SF6), a very long-lived greenhouse gas, has been increasing steadily over the last few decades. Current atmospheric measurements of SF6 are sufficient to infer global-scale emissions, and recent studies (Levin, et al., 2010; Rigby et al., 2010) have shown that global inventories agree well with top-down emissions estimates.

    Get Price
  • Thermodynamic Properties of Sulfur Hexafluoride | Request PDF

    A vibrating-wire viscometer of very high precision was used to measure the viscosity coefficient of gaseous sulfur hexafluoride.

    Get Price
  • Is the end coming for sulfur hexafluoride, the most powerful

    Oct 15, 2020 · But did you know that many of these devices—widely used in electric-utility transmission and distribution systems as well as commercial and industrial facilities—integrate the most powerful greenhouse gas, sulfur hexafluoride (SF 6)? Luckily, leakage rates are low and accidents extremely rare.

    Get Price
  • SAFETY DATA SHEET

    Sulfur hexafluoride OSHA PEL Z2 (United States, 2/2013). TWA: 2.5 mg/m³ 8 hours. Form: Dust ACGIH TLV (United States, 3/2019). TWA: 5970 mg/m³ 8 hours. TWA: 1000 ppm 8 hours. NIOSH REL (United States, 10/2016). TWA: 6000 mg/m³ 10 hours. TWA: 1000 ppm 10 hours. OSHA PEL (United States, 5/2018). TWA: 6000 mg/m³ 8 hours. TWA: 1000 ppm 8 hours.

    Get Price
  • High Precision SF6 Gas Leak Detector - Huatian Electric Power

    HTJL-V High Precision SF6 Gas Leak Detectorr : Method of Measurement: NDIR Single–beam Dual–wavelength Radiometric Survey Techniques: Gas Monitored: Measurement Range: Resolution: Resolution: Sulfur Hexafluoride Gas: 0~1000 ppm: 0.1 ppm ±(1.5%+5d) Repeatability < 2%: Pumping Speed: 0.4L/min: Continuous Working Time ≥5 hours: Dashboard Preheat Start–up Time

    Get Price
  • How Humidity Affects the Safety of SF6-Insulated - WIKA blog

    The GDHT-20 combines advanced technology with a robust design. It provides the reliable, high precision, continuous digital measurement of gas humidity content you want to ensure the integrity of the SF 6 insulator of your equipment and the safety of your plant.

    Get Price
  • Sulfur Hexafluoride - an overview | ScienceDirect Topics

    Sulfur hexafluoride melts at − 50.5 °C and sublimes at − 63.9 °C, critical pressure 3.759 mpa (37.2 atm), critical temperature, 45.55 °C, liquid density 2.863 g/cm 3, gas density 1.336 g/cm 3, dielectric constant 1.00204 (gas), 1.81 (liquid).

    Get Price
  • Portable sulfur hexafluoride gas detector

    Handheld sulfur hexafluoride gas detector. Model. GASTiger 2000. Detection gas. Sulfur hexafluoride(SF6) in air. Working principle. TCD. Detection range. 0~10ppm, 0~50ppm, 0~100ppm (optional) Resolution. 0.01ppm(0~100ppm), 0.1ppm(0~1000ppm) Sampling method. Active pump suction, built in air pump can open or close independently. Flow speed: 500mL/min. Accuracy ≤±3% F.S.

    Get Price
  • Fiber-optic evanescent wave sensor for gas detection.

    Aug 01, 1994 · The sensor, composed of a lead salt tunable infrared laser and a multimode uncladded silver halide infrared optic fiber, was used for rapid measurement of sulfur hexafluoride pressures at a few-percent detection limit. High-precision detection and identification of a large variety of gases are possible. PMID: 19844565 [PubMed]

    Get Price
  • China Sulfur Hexafluoride Multi-Function Tester for Sf6

    Product Description: The SF6 gas Integrated t est instrument can measure humidity (dew point) and purity in one unit, and concentrate the functions that need be realized by several instruments.In one time field measurement, tests two indicators, which greatly saves the gas in the equipment, reduces the userworkload and improves the work efficiency.

    Get Price
  • SULFUR HEXAFLUORIDE by portable GC 6602

    MEASUREMENT TECHNIQUE: GAS CHROMATOGRAPHY (PORTABLE) ANALYTE: sulfur hexafluoride COLUMN: 38 cm x 6-mm OD stainless steel, packed with 100-120 mesh activated alumina DETECTOR: electron capture CALIBRATION: bag standards or calibrated gas mixtures RANGE: 0.1 to 10,000 ppb ESTIMATED LOD:0.05 ppb PRECISION (S r): 0.022 ACCURACY RANGE STUDIED: 0.1 to 200 ppb

    Get Price
  • International Comparison CCQM-P51 – Emission level of CF4 and SF6

    given as 90 – 110 µmol/mol carbon tetrafluoride, 90 – 110 µmol/mol sulfur hexafluoride and nitrogen as balance. The laboratories were also requested to submit a summary of their uncertainty evaluation used for estimating the uncertainty of their result. Measurement equation The measurement model has been taken from the CCQM-K3 [1].

    Get Price
  • Sulfur hexafluoride | F6S - PubChem

    Lumason (sulfur hexafluoride lipid-type A microspheres) for injectable suspension is a 3-part kit comprised of: one Lumason vial containing 25 mg of lipid-type A sterile lyophilized powder with headspace filled with 60.7 mg of sulfur hexafluoride gas one prefilled syringe containing 5 mL Sodium Chloride 0.9% Injection, USP (Diluent) one Mini-Spike Following reconstitution with the provided diluent, Lumason suspension contains 1.5 to 5.6 x108 microspheres/mL with 45 mcg/mL of sulfur hexafluoride.

    Get Price
  • SULFUR HEXAFLUORIDE | CAMEO Chemicals | NOAA

    Excerpt from ERG Guide 126 [Gases - Compressed or Liquefied (Including Refrigerant Gases)]: As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions.

    Get Price
  • Field-Scale Sulfur Hexafluoride Tracer Experiment to

    require few soil gas measurements, and yield transport property information for a small, usually poorly deined, volume of soil near the well. Cross-well gas tracer tests (Kreamer et al., 1988; Nicot and Bennett, 1998) ofer a distinct advantage over single-well tests in that a larger volume of subsurface material is investigated, but

    Get Price
  • ESRL Global Monitoring Division - Data Visualization

    Sulfur Hexafluoride (SF 6) Ambient and standard air samples are injected into the gas chromatograph (GC). Nitrous oxide (N 2 O) and sulfur hexafluoride (SF 6) are separated from other sample constituents using porous polymer columns and detected using electron capture (ECD). This process is highly automated for field and laboratory operations.

    Get Price
  • Industrial SF6 Gas Pressure and Measurement Products - WIKA USA

    SF 6 Gas Handling Equipment, Pressure Gauges, and Sensors . Sulfur hexafluoride (SF 6) is the insulator of choice for a variety of applications. Its electrical and thermal properties make it ideal for use in gas-insulated switchgear, breakers, and gas-insulated lines found in the transmission and distribution (TD) industry.

    Get Price
  • The global SF6 source inferred from long-term high precision

    Emissions of sulphur hexafluoride (SF6), one of the strongest greenhouse gases on a per molecule basis, are targeted to be collectively reduced under the Kyoto Protocol. Because of its long atmospheric lifetime (estimated as 800 to 3200 years), the accumulation of SF6 in the atmosphere is a direct measure of its global emissions.

    Get Price
  • How to Minimize Emissions of Environment-Damaging SF6 - WIKA blog

    Oct 25, 2016 · Sulfur hexafluoride (SF6) has been used for decades as an insulator in power plants and electrical transmission and distribution. This gas has excellent dielectric properties, almost three times better than air and nitrogen, and it works well as arc quencher in circuit breakers and electrical switchgear.

    Get Price
  • Simultaneous analysis of noble gases, sulfur hexafluoride

    Aug 06, 2013 · Standard errors of the gas concentrations are approximately 8% for He and 2-5% for the remaining gas species. The method can be extended to also measure concentrations of chlorofluorocarbons (CFCs). Tests of the method in Lake Lucerne (Switzerland) showed that dissolved gas concentrations agree with measurements from other methods and

    Get Price
  • High Precision SF6 Gas Leak Detector - Huatian Electric Power

    HTJL-H High Precision SF6 Gas Leak Detector. The leak detection of the equipment and container filled with sulfur hexafluoride can be done quickly and accurately qualitatively and quantitatively. High sensitivity, good stability, fast response, no toxic probe, no toxic gas Added alarm setting function

    Get Price
  • Handling and Use of Sulfur Hexafluoride Gas

    Handling and Use of Sulfur Hexafluoride Gas Page 6 of 8 b) Record date, location, and equipment nomenclature on cylinder log. 9. Return all empty cylinders and appropriate logs to the central facility. D. Removal of Sulfur Hexafluoride Gas from In-Service Equipment . 1. Prior to removal of gas, check the gas compartment and associated devices for

    Get Price
  • Sulfur hexafluoride - MolView

    Sulfur hexafluoride is a sulfur coordination entity consisting of six fluorine atoms attached to a central sulfur atom. It is the most potent greenhouse gas currently known, with a global warming potential of 23,900 times that of CO2 over a 100 year period (SF6 has an estimated lifetime in the atmosphere of between 800 and 3,000 years).

    Get Price
edge-iconMaybe You Will Be Interested
toTop
Click avatar to contact us
Chat Online