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Age is not a factor in being an engineer.The real issue here in my mind is whether or not there is a future in this gutted profession in the USA. It used to be that when 1 industry went down,others picked up and you re-tooled yourself to the new business. That is not happening. With an upsurge...

I have a situation where a client wants to installa a flow meter horizontally at about a 20 degree angle. My suspicion is that it will not work because I was of the impression that the meter needed a laminar flow. The meter is measuring raw water flow in a waste water treatement plant. Please...

rbalex: 1st, thanks for your reply. Do you have to have seal-off fittings IN ADDITION to providing the intrinsically safe barriers?

JLSeagull: Thanks for your insight. I am aware of the fact that both the instrument and the barrier have to be IS rated and I am aware that wiring for IS has to be segregated from other forms of wiring. Does anyone happen to know if you can use Intrinsically safe wiring in LIEU of say...

Thank you very much for your comments. I will try to post some pics soon.

All: I have to determine what the correct area classification is for a sump near an oily trench area. From what I have read so far, NFPA 497 suggests that if you have the presence of liquid hydrocarbon detected, you would have Class 1 Division 1, classification. According to what else I found...

The chemical rod sends (I believe the correct term is "leaches")on a continuous basis. I have not done substation grounding so I can't comment on what you have to do there. I have only used it in SCADA applications and not in a ground mat but I see no reason why it cannot work. I do believe...

What types of instruments are used on mechanical seals used in pump systems? Are they worth the hassle of installing them and maintaining them? I would assume that pressure(?) is the parameter we measure? If so, what are we taking the pressure across?

I cannot answer the question specific to betonite but I will offer some following general principles: 1) Lowering resistivity is done in several ways: - 1st you can lower resistivity by installing more rods. This item will only work to a small extent as each rod exerts what I believe is called...

I deal with spread spectrum radio systems in SCADA. I was wondering: 1) How you can select which frequency is best for a specific application? 2) Does the same path loss equation apply regardless of the frequency used? Please advise if you have any experience in this area. Thanks in advance.