Recent content by thermoguard

>Not sure if this would be allowable under the relevant >codes, but might it be possible to put a short delay (maybe >just 1 sec.) between closing the upstream block valve and >closing the downstream valve, to allow the pressure to >dissipate into the appliance before opening the vent valve...

Hi all, Not sure if this would be allowable under the relevant codes, but might it be possible to put a short delay (maybe just 1 sec.) between closing the upstream block valve and closing the downstream valve, to allow the pressure to dissipate into the appliance before opening the vent...

I think there's enough guidance in ISA 5.1 to cover all these situations. Firstly, P&IDs don't have to include details of the particular technology used to perform the task - general LI, LIT, LSL, LSH etc. symbols can be used. However, if you wish to be more specific, the examples in Section...

Do you currently measure the volume of process gas used to supply instruments & valves? Of if not, could you add a temporary flowmeter/totaliser? With typical gas usage figures you should be able to convert to air using relative density figures?

Hi Chirag, >I want to measure a fluid flow whose range-ability is 20:1 >(max flow:min flow = 20:1) using ORIFICE. How many dP tx can >i use for the measurement? I'm a bit rusty with this stuff, so others may have more up to date information. Firstly are you asking for advice on actual...

Hi All, I agree with Dave - an interesting thread. Just found it (Feb 2015) and would be interested to hear if there has been any progress or resolution? Ian

>Ian, > >Did you have any joy in this pursuit? > >John Hi John, Yes, a former colleague came good with the info I needed, to use Hyper-terminal to receive the serial output and store it as .txt files. Do you need this too? If so, I'll dig out the info and post it here. Ian

C'mon guys, There must be some other old fossils like me out there who remember uXL and still have some disks & stuff lying around? Any help much appreciated. Ian

Hi Ariel, I'm not familiar with the 149 but I'll try to help. When you say idle running, do you mean running a generator synchronous rpm but no electrical load or running at a slow idle (say 700rpm)? Does the hunting stop when the generator is electrically loaded to about 50% capacity or...

Hello Ahmed, As far as I know there's no way to 'force' a contact input from the operator station in the CS3000 system. However, if you want to know how to solve your problem by changing the motor logic using the builder program "System View" I may be able to help. In the short term, to...

> Why not put a valve between the tank and pressure transmitter? Then you can replace it with the tank full (except initial installation). < My thinking in suggesting a flush-mount diaphragm transmitter was that this edible oil may be stored hot because it solidifies or 'gels' at ambient...

Hi, Not sure exactly where your question is leading but, my understanding is as follows. Ex-d (flameproof or explosion proof, depending on where you are in the world) equipment works like this: the equipment enclosure does not aim to completely exclude flammable vapours but rather, should...

I agree that ultrasonic would not be a good choice with hot vapours present. Radar could be OK. Other possibilities are hydrostatic pressure measurement and capacitance/RF admittance type probes. If there’s a handy flanged nozzle near the tank bottom (say 2" or larger) an extended diaphragm...