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D
Control valve use in different fluids
as long as adequate pressure rating, pipe size, and flow/deltaP requirements are met, it can be considered..
Dave
Post #2
Yesterday at 10:08 AM
Forum:
Control Valves
D
pH analyzer operating at high pressure
pressure reduction required, otherwise you might consider tracking conductivity, or corrosion monitoring
Dave
Post #2
Monday at 2:32 PM
Forum:
Sensors & Calibration
D
Acidity measurement in molten sulphur
None that could be used in actual service. You'll need to consider the equilibrium constants of the various ionic species at those temperatures as free H2SO4 probably does not exist as a separate component.
Dave
Post #2
Sunday at 4:20 PM
Forum:
Instrumentation & Measurement
D
Orifice plate flowmeter
What accuracy are you after?
Dave
Post #2
Nov 16, 2021
Forum:
Sensors & Calibration
D
Thermocouple type
simply, the bearing sensor
Dave
Post #2
Nov 11, 2021
Forum:
Instrumentation & Measurement
D
Anyone have some experiences with Flowmeters?
Typically you are only given normal process flows from the material-energy balance calculations. The instrument range is typical chosen at factor of 120-140% larger than normal flow for d/p meters to account for variations in the pump capacity and valve swings, and so on.
Dave
Post #6
Nov 3, 2021
Forum:
Instrumentation & Measurement
D
Which one is better, a water level meter V.S a submersible level sensor for well level, 200m deep
in the old days, the water level was detected when the bucket brought up water
Dave
Post #3
Oct 26, 2021
Forum:
Instrumentation & Measurement
D
Radar level transmitter problem
Foaming presents problems in some services. If you get good reading with reduced filling rate, then you'll have to reduce the rate of filling.
Dave
Post #5
Oct 7, 2021
Forum:
General Automation Chat
D
Explosion Proof Vs. Non-Sparking Motors in Class 1 Div 2 Areas
Basically, if the motor doesn't satisfy the rating requirement, it is dangerous.
Dave
Post #3
Oct 5, 2021
Forum:
Electrical Engineering
D
Radar level transmitter problem
This is a common problem. The measurement is only suited to ideal fluids with splashing, foaming, or changing reflectivities. You need an alternate measurement.
Dave
Post #2
Oct 5, 2021
Forum:
General Automation Chat
D
what are the checks required if the Control valve have Hunting Issue ?
if the air leak is pushing the liquid away you are okay. ORings do not use rubber as a rule.
Dave
Post #8
Oct 4, 2021
Forum:
Control Valves
D
Emerson magnetic flow meters 8700 peoblem
That is a typically a pipe mounted device, flow through, not "imersive." As the electronics drive the magnetic coil used, you'll need to contact your supplier, for basic trouble shooting advice.
Dave
Post #2
Sep 28, 2021
Forum:
Instrumentation & Measurement
D
Thesis title
Ultra sound flow measurement in blood vessels https://pubmed.ncbi.nlm.nih.gov/2931884/
Dave
Post #2
Sep 22, 2021
Forum:
Instrumentation & Measurement
D
fisher pcv installed in petrol road loading line
The samson valves were pneumatic(air) operated, the Fisher self contained, with actuation by the process fluid. In liquids the 6351 regulator must be used, but the risk is possible leakage of diesel from the actuator. High temp seals must be used if you have temperatures>50C
Dave
Post #9
Sep 10, 2021
Forum:
Instrumentation & Measurement
D
fisher pcv installed in petrol road loading line
Here is CO's pdf with an arrow showing the direction of flow. Make sure the flow is aligned with the arrow tag on the valve
Dave
Post #5
Sep 10, 2021
Forum:
Instrumentation & Measurement
D
Australian restricted electrical licence (for instrument process control technician) advice
Apply for the restricted licence, it covers instrument wiring.
Dave
Post #2
Sep 10, 2021
Forum:
Jobs & Career Advising
D
fisher pcv installed in petrol road loading line
22.jpg is not accessible
Dave
Post #3
Sep 10, 2021
Forum:
Instrumentation & Measurement
D
RTD failure
you may be dealing with a winding failure, check your motor shop, and do the winding insulation testing when you get a chance.
Dave
Post #11
Sep 9, 2021
Forum:
Power Generation
D
Electro magnetic flow meter fluctuations
Brine in a closed loop? Are you measuring sea water or some other fluid. Also, since the fluctuations begin at higher valve openiings, are you dealing with multi phase flose (air pockets, etc.).
Dave
Post #3
Aug 27, 2021
Forum:
Instrumentation & Measurement
D
Control valve
the short answer is yes,
Dave
Post #4
Aug 16, 2021
Forum:
Process Control
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