Gas Select™ and Composer™ tutorial Alicat mass flow devices come preloaded with 98-130 gases that are selectable using Gas Select™. Composer™ firmware additionally allows the user to create and store up to 20 custom gas mixes. See below for instructions how to use Gas Select™ and Composer™. Video tutorial Step-by-step instructions Gas Select™ (front panel) […]
Zero band (deadband) tutorial Alicat mass flow devices measure flow using differential pressure, making them very sensitive. Because of this, factors such as the air conditioning in the room may lead to small fluctuations in device readings. If you notice that your device is fluctuating around very low flow rates, you can use the zero […]
Changing engineering units tutorial You can easily change the engineering units displayed on your Alicat device and/or in the serial data. You can even have the display use a different set of engineering units from the serial data. For your convenience, each device comes pre-loaded with all relevant engineering units. See below for instructions on […]
Flow and pressure averaging tutorial Most Alicat devices have sensor response times <1 ms, making measurements susceptible to noise. This tutorial details how to change flow and pressure averaging to average out noise in readings. Video tutorial Step-by-step instructions (front panel) Pressure averaging Press the bottom right button for “MENU” selection. Press the bottom middle […]
Inverse pressure control tutorial: Switching from forward to back pressure control A forward pressure controller can be reconfigured into a back pressure controller by following two simple steps. First, you must swap the valve location (tutorials linked below). You can then activate inverse pressure control using either the front display or serial communications. In this […]
Taring/auto-taring tutorial Setting the tare takes a sensor signal and sets it as zero in flow or pressure. A zero setpoint results in closing of the valve (on controllers) and creates a known “no flow” condition. Many measurement devices need to periodically have tare set to remove errors due to drift. Improperly setting tare (when […]
Download and Edit Registers and Factory Restore Tutorial Alicat devices with displays can display registers, but can also been displayed and changed with a computer. With 8v or newer firmware versions, registers can now also be edited from the main screen. This can help to easily reconfigure a device in the field. This article explains […]
Here are instructions on how to change the Unit ID and Baud Rate on your Alicat device.
Setpoint Ramping Tutorial Alicat controllers come equipped with a setpoint ramping feature that allows them to ramp up and/or down to changes in setpoint, commonly used to ensure safety. With setpoint ramping, you can set a maximum speed at which a mass flow or pressure controller flows until the setpoint is achieved. Setpoint ramping can […]
Bleeding your liquid device tutorial Alicat differential pressure based liquid flow meters and controllers should only be used to flow liquids. Sometimes, however, a liquid contains trapped air or gas bubbles. It is critical that the device only measures the pressure of the gas-free liquid flowing through the device (no bubbles), or readings will be […]