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Hi everyone, I was wondering if anyone knows how music box drums are made. From what I've seen in a video, one type is basically a metal sheet rolled into a hollow cylinder. Small holes are drilled on the cylinder. Then, wire is inserted into each hole and is trimmed. The cylinder is then...

Hi everyone! I've been tasked to select/design an optimal condition monitoring system for our factory's centrifugal ductile iron pipe casting machine(s). Here's some info on the machines: - There's 3 of them, machines #1 and #2 are for pipe sizes from DN100 to DN350 and #3 is for DN400 to...

Hi everyone. Are there any standards or books about pressure gauge Bourdon tubes and movements which explains criteria such as general design, dimensions, material, manufacturing procedure, heat treatments, etc.? If not, can anyone answer the following questions for me? * Is the mechanism and...

as i read articles and data sheet of masoneilan level transmitter displacer type i did understand that for interface application the displacer must always immersed in fluid with lower density. i need to know how can i sure that this will happened . and if it doesn't happen what would be wrong...

Hi everyone, I'm looking for top instrument calibration brands (temperature, pressure, etc.). More specifically, I'm looking for cheaper alternatives to Fluke! Your suggestions will be highly appreciated. Thanks.

Hi everyone. I was wondering if anyone could help me with the following questions regarding pad type tube skin TCs: - If I'm not mistaken, the material of pad and MI cable sheath for tube skin thermocouples must be the same, otherwise the couple might introduce an unwanted voltage in the...

Hi everyone. I'm a bit confused about an item our customer has required from us in a project. The item is a blind 2 inch API flange of 10K rating (I assume it should be a 6BX flange, right?). The problem is that the nominal size of blind 6BX flanges in API 6A standard starts from 5...

Hi everyone. I was wondering if there are any standards (preferably ASME) about level measurement and control techniques (switches, gauges, transmitters, etc.) like there are for flow and pressure measurement. I did a quick search on the web but couldn't find anything useful. Thanks a lot.

Hi everyone, We're having a problem with an incoloy 800 part overlaid with stellite 6. The part is a thermowell shaped roughly like a drilled partial cone with large diameter of 28mm, small diameter of 20mm, height of 90mm and drill diameter of 10 mm. The overlay thickness is 2mm and has been...

Hi everyone. Sorry if this looks like a duplicate subject; I know there are lots of other threads regarding NACE MR0175, welding and PWHT requirements, but I couldn't find a clear answer to my problem in any of them. Here's the deal: we are manufacturing 316L thermowells which are to be...

Hi folks! I was wondering if anyone can help me with a problem I'm having with the concept of thermocouples. If I understand correctly, there should necessarily exist a temperature gradient in one of the conductive couples in order for the emf to be generated. So how can you make sure that...

Hey guys... I have 2 questions about using CC for flow metering: - How can you be sure that an arbitrary cross section of a flow will produce an identical signal at the two sensors? (In the first place, have I grasped the concept of CC correctly? :D) - Is it possible to use this method for...

Hi everyone, I was wondering if anyone can provide me with a list of top companies that produce multiphase flow meters, particularly for Oil and Gas industry applications. Thanks!