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Vega VEGADIF 65 Operating Instructions Manual

Chemical seal csb
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Operating instructions

Chemical seal CSB
for VEGADIF 65
Document ID: 36133

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Summary of Contents for Vega VEGADIF 65

  • Page 1: Operating Instructions

    Operating instructions Chemical seal CSB for VEGADIF 65 Document ID: 36133...

  • Page 2: Table Of Contents

    5 Maintenance and fault rectification Maintenance ........................20 Supplement Technical data ........................ 21 Chemical seal with vacuum applications ................ 21 Dimensions and weight ....................25 Industrial property rights ....................33 Trademark ........................33 Editing status: 2017-03-17 Chemical seal CSB • for VEGADIF 65...

  • Page 3: For Your Safety

    Inappropriate or incorrect use of the instrument can give rise to application-specific hazards, e.g. vessel overfill or damage to system components through incorrect mounting or adjustment. General safety instructions The safety information in the operating instructions manual of the respective sensor must be noted. Chemical seal CSB • for VEGADIF 65...

  • Page 4: Product Description

    The CSB chemical seal consists of the following components: sepa- Constituent parts rating diaphragm, process fitting as well as transmission line (capillar- ies). The components are fully welded together with each other and with the associated differential pressure transmitter and represent a hermetically sealed system. Fig. 1: VEGADIF 65 with chemical seal CSB VEGADIF 65 Transmission line (capillaries) 3 Process fitting Separating diaphragm Principle of operation...
  • Page 5 Protected against solar radiation • Avoiding mechanical shock and vibration • Storage and transport Storage and transport temperature see chapter "Supplement - temperature Technical data - Ambient conditions" • Relative humidity 20 … 85 % Chemical seal CSB • for VEGADIF 65...

  • Page 6: Planning Instructions For Isolating Systems

    High temperatures KN32 14 … +572 °F) High temperature oil -10 … +400 °C 1.06 47.1 0.77 High temperatures KN32 (+14 … +752 °F) Halocarbon oil KN21 -40 … +150 °C (- 1.89 10.6 0.83 For chlorine appli- 40 … +302 °F) cations Chemical seal CSB • for VEGADIF 65...

  • Page 7: Influence Of Temperature Changes

    316L. For other filling oil, these temperature coefficients have to be multiplied with the correction factor for the TK of the respective filling oil. The control volume is the volume that must be shifted in order to utilise the entire measuring range. Chemical seal CSB • for VEGADIF 65...
  • Page 8 • Characteristics 5 – DRD DN 50 (65 mm), PN 25, 316L • Method of calculation Chemical seal: EN/DIN flange DN 80 PN 10-40 B1, AISI 316L • Capillary length: 5 m • Ambient temperature capillaries/transmitter: 45 °C • Filling oil: Silicone oil To calculate the indication, proceed as follows: Chemical seal CSB • for VEGADIF 65...
  • Page 9 • Group B – Cell 2" 150-2500 lbs, 316L – ASME flange 2" 150 lbs RF, 316/316L – ASME flange 2" 300 lbs RF, 316/316L – Cell DN 50 PN 16-400, 316L Group B permitted operating range –20 –40 Capillary length [m] Fig. 3: Permissible ambient temperature range depending on the capillary length for chemical seals of group B Chemical seal CSB • for VEGADIF 65...
  • Page 10 Capillary length [m] Fig. 4: Permissible ambient temperature range depending on the capillary length for chemical seals of group C • Group D – ASME flange 3" 150 lbs RF, 316/316L – ASME flange 3" 300 lbs RF, 316/316L – Cell 3" 150-2500 lbs, 316L Group D permitted operating range –20 –40 Capillary length [m] Fig. 5: Permissible ambient temperature range depending on the capillary length for chemical seals of group D • Group E – ASME flange 3" 150 lbs RF, 316/316L, extension: 2"/4"/6"/8" Chemical seal CSB • for VEGADIF 65...

  • Page 11: Dynamic Behaviour Of The Chemical Seals

    The following diagram shows the typical step response times (T90) of the different filling oils depending on the measuring cell and capil- lary inner diameter. The values are specified in seconds per meter capillary length and must be multiplied by the actual length of the capillaries. The step response time of the transmitter must also be taken into account. Chemical seal CSB • for VEGADIF 65...

  • Page 12: Installation Position

    For minimisation of the step response time, you have to following response time options: • Bigger capillary inner diameter • Shorter capillaries • Filling oil with lowest viscosity Installation position Standard applications When the pressure transmitter is mounted above the lower chemical seal, the max. height difference H1 according to the following illustra- Chemical seal CSB • for VEGADIF 65...
  • Page 13 + – – Fig. 10: Max. height when mounting above the lower chemical seal Vacuum applications In vacuum applications, the pressure transmitter should be mounted at the same height as or below the lower chemical seal. By doing this, an additional vacuum load from the filling oil in the capillaries is avoided. – + – Fig. 11: Preferred mounting below the lower chemical seal Chemical seal CSB • for VEGADIF 65...

  • Page 14: Selection Of The Measuring Range

    Fig. 12: Density measurement with VEGADIF 65, h = defined mounting dis- tance, Δp = differential pressure, ρ = density of the medium, g = acceleration of gravity VEGADIF 65 Interface measurement – Fig. 13: Interface measurement with VEGADIF 65 VEGADIF 65 2 Liquid with higher density 3 Liquid with lower density Selection of the measuring range For instruments with chemical seals and capillaries, the zero point shift due to the hydrostatic pressure of the fluid column in the capillar- ies must be taken into account when selecting the measuring cell. Chemical seal CSB • for VEGADIF 65...
  • Page 15 = 47.87 mbar - 197.77 mbar = -149.90 mbar Differential pressure on the transmitter with max. level: Δp +ΔH •(1.0 kg/dm³ • 9.81 m/s) Transmitter = -149.90 mbar + 98.1 mbar = -51.80 mbar Hence a 100 mbar measuring cell is required for this application example. Chemical seal CSB • for VEGADIF 65...

  • Page 16: Calculation Of The Temperature Error

    ΔT Process temperature-Reference temperature chemical seal = 100 °C - 20 °C = 80 K ΔT Ambient temperature-Reference temperature capillaries = 40 °C - 20 °C = 20 K Number of chemical seals = 2 Error calculation Δp = (1.34 mbar/10K) • 80K • 2 = 21.44 mbar chemical seal Corrective factor diaphragm material = 21.44 mbar • 1.5 = 32.16 mbar Δp = (0.3 mbar/10K) • 20K • 4 m • 2 = 4.8 mbar Capillaries Chemical seal CSB • for VEGADIF 65...
  • Page 17 3 Planning instructions for isolating systems Δp = 32.16 mbar + 4.8 mbar = 36.96 mbar Total The total temperature error of the double-sided chemical seal is 20 % of 36.96 mbar as listed above, i.e. 7.4 mbar. Chemical seal CSB • for VEGADIF 65...

  • Page 18: Mounting

    Instruments for oxygen applications must be unpacked just before mounting. After removing the protective cover of the process fitting, the label "O " will be visible on the process fitting. Penetration of oil, grease and dirt should be avoided. Danger of explosion! Instructions for handling • Instruments must be protected against soiling and strong fluctua- tions of the ambient temperature Chemical seal CSB • for VEGADIF 65...

  • Page 19: Mounting Instructions

    When using soft material or PTFE seals, take note of the regula- tions of the seal manuffacturer, particularly with respect to torque and settling cycles • Laying the capillaries Lay in vibration-free areas to avoid additional pressure fluctuations • Do not lay close to heating or cooling lines • Insulate in case of colder or warmer ambient temperatures • Bending radius of the capillaries ≥ 30 mm Chemical seal CSB • for VEGADIF 65...

  • Page 20: Maintenance And Fault Rectification

    Make sure that the materials are resistant to the cleaning process. The wide variety of applications of chemical seals makes special cleaning instructions necessary for each applica- tion. Please ask the agency serving you. Chemical seal CSB • for VEGADIF 65...

  • Page 21: Supplement

    For that reason, chemical seal systems can only be used to a limited extent in a vacuum, depending on the pressure transmission liquid, process temperature and pressure. To extend the area of ap- plication, we offer a so-called vacuum service as an option. The following graphics show the areas of application for the different pressure transmission liquids. Chemical seal CSB • for VEGADIF 65...
  • Page 22 6 Supplement mbar 1000 T °C Fig. 15: Area of application for high temperature oil KN 32 Standard chemical seal Chemical seal with vacuum service mbar 1000 T °C Fig. 16: Area of application for silicone oil KN 2.2 Standard chemical seal Chemical seal with vacuum service Chemical seal CSB • for VEGADIF 65...
  • Page 23 6 Supplement mbar 1000 T °C Fig. 17: Area of application for silicone oil KN 17 Standard chemical seal Chemical seal with vacuum service mbar 1000 T °C Fig. 18: Area of application for Halocarbon oil KN21 Standard chemical seal Chemical seal with vacuum service Chemical seal CSB • for VEGADIF 65...
  • Page 24 6 Supplement mbar 1000 T °C Fig. 19: Application area for Halocarbon oil KN21 for oxygen applications mbar 1000 T °C Fig. 20: Area of application for Neobee KN 59 Standard chemical seal Chemical seal with vacuum service Chemical seal CSB • for VEGADIF 65...

  • Page 25: Dimensions And Weight

    98 mm (3.94") (3.94") Fig. 22: left: Process fitting VEGADIF 65 prepared for chemical seal assembly. right: Position of the copper ring seal Chemical seal connection Copper ring seal Cup diaphragm In the following charts, the typical values for the temperature coefficient "TK Process" are listed apart from the dimensions. The values apply for silicone oil and the diaphragm material 316L. For Chemical seal CSB • for VEGADIF 65...
  • Page 26 The stated nominal pressure applies to the chemical seal. The max. pressure for the complete measuring system depends on the weakest element (with regard to pressure) of the selected com- ponents. The weights of the chemical seals are listed in the charts. For the weight of the transmitter see also "Dimensions and weights" in operating instructions VEGADIF 65. The following drawings are unifilar diagrams. The actual dimensions of the chemical seal can devi- ate from these dimensions. Chemical seal with EN/DIN flanges Fig. 23: Chemical seal with EN/DIN flanges, dimensions according to EN 1092-1/DIN 2501...
  • Page 27 Weight [kg] screw holes screw holes screw holes phragm [mbar/10K] g2 [in][mm] k [in][mm] diameter dM [in][mm] 0.75 4.75 2.32 +1.20 120.5 0.75 4.75 1.85 120.5 0.75 3.50 +0.4 152.5 0.75 2.83 +1.34 152.5 Chemical seal CSB • for VEGADIF 65...
  • Page 28 DN 40 PN 40 Version Number of Diameter, Hole circle, Diaphragm TK process Weight of screw holes screw holes screw holes diameter dM [mbar/10K] two chemical d2 [mm] k [mm] [mm] seals [kg] Chemical seal CSB • for VEGADIF 65...
  • Page 29 Chemical seal with LA connection 78 mm ") Fig. 27: Chemical seal with LA connection Version Nominal pressure TK process [mbar/10K] Weight of two chemical seals [kg] PN 40 ±0.44 Chemical seal with Tuchenhagen Varivent connection Fig. 28: Chemical seal with Tuchenhagen Varivent connection Chemical seal CSB • for VEGADIF 65...
  • Page 30 [mm] seals [kg] DN 50 PN 25 ±1.23 DN 80 PN 25 ±0.34 Chemical seal with DRD connection 4 x ø 1 1,5 M max. ø65 ø84 ø105 Fig. 30: Chemical seal with DRD connection Chemical seal CSB • for VEGADIF 65...
  • Page 31 L [in] eter d3 ical [mm] [mm] [in][mm] seals [kg] DN 50 PN 16- ±0.30 DN 80 PN 16- ±0.06 DN 80 PN 16- DN 100 PN 16- ±0.06 Chemical seal CSB • for VEGADIF 65...
  • Page 32 [in] [mm] diam- [mm] length L diam- chemi- eter [in][mm] eter d3 cal seals dM [in] [in][mm] [kg] [mm] 150- 3.91 2.32 0.792 ±0.30 2500 150- 5.28 3,50 0.792 ±0.06 2500 Chemical seal CSB • for VEGADIF 65...

  • Page 33: Industrial Property Rights

    Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellec- tuelle. Pour plus d'informations, on pourra se référer au site www.vega.com. VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad indus- trial. Para mayor información revise la pagina web www.vega.com.

  • Page 34: Chemical Seal Csb • For Vegadif

    Notes Chemical seal CSB • for VEGADIF 65...
  • Page 35 Notes Chemical seal CSB • for VEGADIF 65...
  • Page 36 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2017 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113...

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