Electronic pressure regulator or mechanical pressure reducer: which one does your process need?

Mechanical pressure reducer or electronic pressure regulator? How each works, when a fixed setpoint is enough, and when closed-loop control pays off.

Flow control valve or mass flow controller: which one does your gas line need?

Flow control valve, solenoid valve or mass flow controller? What each one actually controls, how fast a controller responds, how the valve is sized, and how to choose.

Which flow meter do you need? Rotameter, thermal, laminar DP, Coriolis and ultrasonic compared

Rotameter, thermal, laminar DP, Coriolis or ultrasonic? How each flow meter works, where it fails, and how to choose for your gas or liquid.

Can you change the gas on a mass flow controller without recalibrating?

Changing the gas on a mass flow controller: why thermal devices need K-factors, how Gas Select and COMPOSER let a laminar DP instrument switch gas without recalibration, and where the limits are.

Laminar differential pressure or thermal mass flow controller: what makes laminar DP faster, and why does it matter?

Laminar DP or thermal mass flow controller? Start-up, response, gas switching, turndown and mounting compared, with the figures Alicat publishes.

Leak testing with flow and pressure: pressure decay, mass flow or tracer gas?

Pressure decay, mass flow or helium and hydrogen tracer gas? How each leak test works, where each one fits, and how one flow controller does the job.

Pressure sensor, transducer or gauge? Absolute, gauge and differential pressure explained

Absolute, gauge or differential pressure? What each reference means, when a sensor, transducer or gauge is the right word, and how to choose for your process.

How do you control gas flow and substrate temperature in a thin-film deposition tool?

Thin-film deposition: how per-line mass flow control and backside gas pressure keep CVD and etch repeatable, with the Inchfab ICP-CVD case as a worked example.