FID Detector cost to leave on all the time

I remember hearing about a big cost saving in air / hydrogen when the 6890 came out.. There was no way to shut off the 5890 gc gaases at the end of a run. I think it was about 5000 a year if you shut off the air / h2 / makeup gas at the end of the run.

Is there some info on this? I think that if my coworkers can see a cost benifit they will be more likely to put an "off" method at the end of the run.

I just know it takes me about 15 min to change a tank. So ...

Thanks!

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0 jsharun over 2 years ago

Some volume values if you are choosing gas cylinders to supply your instruments with gas.

T size cylinders at 2400 PSIG contain 310 cubic feet of gas or 8778 litres

Zero Air T size cylinders at 2600 PSIG contain 9509L of gas

K Size cylinders at 2000 PSIG contain 232 cubic feet or 6569L of gas.

If your FID is at 400ml/min and constantly on, you will probably be changing tanks every 13 days if you swap it out at 300 PSIG left in the tank.
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0 jsharun over 2 years ago

Some volume values if you are choosing gas cylinders to supply your instruments with gas.

T size cylinders at 2400 PSIG contain 310 cubic feet of gas or 8778 litres

Zero Air T size cylinders at 2600 PSIG contain 9509L of gas

K Size cylinders at 2000 PSIG contain 232 cubic feet or 6569L of gas.

If your FID is at 400ml/min and constantly on, you will probably be changing tanks every 13 days if you swap it out at 300 PSIG left in the tank.
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