Do you require a pressure regulator or a flow regulator? All high-pressure regulators are designed to accept incoming pressure of 150bar from the cylinder. This makes them a high-pressure regulator. But what do you want on the outlet of the regulator. What does your instrument/analyser/GC require? Pressure or flow?
Usually, a gas recognition instrument will demand flow (.5l/min) when a gas analyser may require stress at 1 or 2 club. The instrument, analyser or GC will determine what is needed.
Once this can be determined then we can keep on.
Step Two: What is the outlet stream rate or stress necessity?
Specific flow rates or pressures may be necessary for a specific instrument or analyser.
Determining that level will let us select a regulator using the proper electric outlet requirements or even a adjustable range including the worth required.
Flow: Numerous regulators have particular stream rates which can be fixed, while others have a selection of stream rates. A continuous flow regulator will give you the desired stream rate required by the instrument. In situations where the analyser has an internal pump then an on-need flow regulator will give you the stream once a vacuum is placed around the regulator.
(To learn more read our blog on Best Practice for Gas Detection Equipment with Inner Pumping systems)
Pressure: All stress regulators have electric outlet ranges including -1.5bar, -3.5bar or -10bar. Select the range which matches your necessity. In case your analyser demands 2 club then choose the -3.5bar range.
Step Three: Gasoline kind and focus: The gas mixture or gas type will determine the content necessity in the regulator. It is additionally essential when choosing other materials including tubing.
(For additional information read our weblog Selecting Suitable Materials for Calibrating Gasoline Recognition Equipment.)
Highly corrosive gases such as chlorine, ammonia, nitrogen dioxide, hydrogen cyanide require stainless regulators.
Hydrogen sulphide and sulphur dioxide can use nickel coated brass in the event the focus is below 50ppm. Higher concentrations of H2S and SO2 need stainless-steel.
Low corrosive gas mixtures such as CO, Carbon dioxide, O2 and most hydrocarbons would need brass. It is crucial to not use nickel coated brass for high levels of carbon monoxide, as CO and nickel are incompatible and can form tetracarbonylnickel.
Where high purity gas levels are utilized with extremely corrosive gases, purging techniques are suggested.
Stage 4: What inlet connector would you require? Stream or Stress Regulators
The gas type or gasoline mixture will determine what valve kind is on the gasoline tube. Aussie (AS), British (BS) or Northern American (CGA) specifications are common based upon where the gasoline mix was manufactured. The inlet connector around the regulator must match the gas cylinder device. You have to figure out what type of device is on the tube, whether that is an older cylinder or a new cylinder. The material in the device and regulator will likely be based mostly on the gas kind.
Inlet connections can be changed to match the gas mixture if required.
Step 5: Do you need a single or dual phase regulator (pressure regulators only)
The outlet pressure of a specialty gas regulator comes with an inverse relationship to the gas volume in the cylinder. Because the gas volume decreases the outlet pressure increases.
Can you require a constant electric outlet pressure all through using your analyser? Frequently evaluation may take the time to complete and so the analyser is left unattended.
Should you require a continuous stress being sent to your analyser then a double phase regulator is necessary. The dual stage regulator corrects for the rise in outlet stress and maintains the stress on the rczlsg valve. Depending on step 2, should you require a 2 club continuous electric outlet pressure you will decide on a dual phase regulator using the range -3.5bar and set the worth to 2 bar.
If an increase in electric outlet pressure is irrelevant then the solitary stage regulator will be appropriate for your application. In the case of any -3.5bar range regulator the best electric outlet pressure will be 3.5bar.
Solitary and double phase regulators are available for all types of components of stress regulators.