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  1. ALEXFV

    IP transducer on 48 VDC

    Thanks everybody for valuable discussion. It's incredible how difficult is to solve problem regarding european specs., but now I can see how to deal with problem. Kind regards.
  2. ALEXFV

    IP transducer on 48 VDC

    I'm still looking for the IP at 48 VDC, but all manufacturers that I reviewed has equipment with 40VDC as maximmum. As large as I could found, Conoflow has the maximum DC current (40 VDC). Fisher, Brandt, Fairchild, etc has 32 VDC as maximmum. Maybe best option would be to install a voltage...
  3. ALEXFV

    IP transducer on 48 VDC

    Hello all. I apreciate your valuable comments. Yes, I checked with vendors, and there's one positioner of Foxboro-Eckardt that handles 48 VDC as maximum, but it's only available with bus option. Plant is so old, then, there's no way to intoduce a field bus. I don't need a positioner but an IP...
  4. ALEXFV

    IP transducer on 48 VDC

    Hi everybody: I'm looking for a special electropneumatic IP tranducer on 48 VDC for a pneumatic positioner. Input signal: 4-20 mA Output signal: 3-15 PSI NEMA 4, IP65 or equivalent. If someone would advise for a manufacturer and its web page or Rep. I will really apreciate. Have an excellent...
  5. ALEXFV

    VOC concentration conversion (PID)

    Good night: Sorry for delay on response...I'm new in this forum. So, you can check for PID factors at BWT page (www.gasmonitors.com) or at RAE wab page...There's some interesting articules regarding PDI and FID. They aren't the same: Photoionization detector converts a signal that comes from...
  6. ALEXFV

    Motor_operated contor valve??? Is it proper??

    TAGE: There's a huge amount of control applications where motorized valves are used. It depends on quality of electric actuators, and Class of modulating service. As per valuable comments of everybody, you must review your application. You can have an easy approach at www.bernard-actuators.com...
  7. ALEXFV

    Water Treatment for Copper Pipes

    Hello: Have you tried with UV radiation? It would be useful with some kinds of life-forms. Good luck
  8. ALEXFV

    IR theory

    Hello: On my knowledge, best option to understand theory applied on IRT comes from "black book" of MIKRON INFRARED, www.mikroninst.com In its theory section you can check how IRTs works. Is nice as beggining. Good luck.
  9. ALEXFV

    Sulfur Aerosol - Formation and Elimination?

    You have to burn it in an special burner, at very high temperature (around 1200 °C) in presence of an oxigen flow. You will get solid Sulphur and H20. For refences, check Claus reaction. Other information about Claus and SRU are available at www.e2t.com
  10. ALEXFV

    Looking for a Constant Gauge pressure regulator

    Salimaye: You have a seriuos application because of great changes on barometric pressure!! You can check at Fisher Regulators, in order to select an approach: www.emersonprocess.com Hope this can help you
  11. ALEXFV

    looking for high-speed, high-temp pwm solenoid valve

    Bootup: You are right, but take care that you are talking about valves for FLUID POWER (pneumatic) application, not for FLUID CONTROL (W.O.G.S. for example) application...these are two quite different fields. All people with experience on solenoid valves keeps in minds the two distinctions...
  12. ALEXFV

    Power Plant Valves

    JohnBreen: As per your thread, there's some brands made in México such as Walworth, Keystone, Worcester and some models of DeZurik. Hope this would help you. Regards.
  13. ALEXFV

    looking for high-speed, high-temp pwm solenoid valve

    bootup: You are looking for an application that solenoide cant't handle. Let me explain you: There's no coils (not commercial) that can deal with 600 °F, because of force of magnetic field depends on temperature (among other factors), and protection needed is more than nuclear spec. Coil...
  14. ALEXFV

    "COS" feature on electric actuators. What is meaning?

    BJC: Thanks for valuable comments. I will write Limitorque in order to improve technical literature that I had.
  15. ALEXFV

    "COS" feature on electric actuators. What is meaning?

    BJC: Language is english, and valves are installed in México. Limitorque is prefered brand here. Thanks for your comments.
  16. ALEXFV

    "COS" feature on electric actuators. What is meaning?

    BJC: Thanks for your interest on my reply. Catalogues are for LIMITORQUE L120 Series (appears power factor in place of COS), BIFFI F01 series (same as Limitorque), ROTORK Series AQ (same as Limitorque), L.Bernard(COS in place of power factor) With the help of all repliers (thanks...
  17. ALEXFV

    looking for "constant volume" valve

    MaxMech: IMHO, selection of a valve depends on basically 8 parameter (there's more of course, but these could apply on the majority kind of valves): Type. 2,3 or 4 ways Operation: NC, NO, universal, on/off service, modulating service, etc. Medium: Oil?, water?, gas? other? Size. (Diameter...
  18. ALEXFV

    "COS" feature on electric actuators. What is meaning?

    Thanks to aolade, rbulsara, quark. Next I include some specs. as apears on Catalogue: S4 service - D.R. : 30% Nominal type torque (lb-ft): 44 Output speed (RPM): 11 Time/turn (sec/turn): 5.42 Power(Kw): 0.1 Sped (RPM): 750 Current rated A: 2.5 Current start A: 3.0 COS: 0.95 Eficiency: 18%...
  19. ALEXFV

    [b]Fusible Link / Fire Valve / thermal actuator[/b]

    Tthehammer: Intelligent actuators has the option, when temperature becomes so high, to override the thermal protection and goes to failsafe position (open or close), but only "INTELLIGENT" series. These are non-intrusive equipment. Maybe you can use to use an bimetalic thermometer (direc mount...
  20. ALEXFV

    "COS" feature on electric actuators. What is meaning?

    Thanks aolalde for your answer, now specs. has more sense.

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