Category: Tutorials

  • Changing IP address configuration

    Changing IP Address Alicat devices with Ethernet-based protocols have an IP address in order to distinguish it from other devices on the network.  This can be set either as a static address, or an address determined by a DHCP (Dynamic Host Configuration Protocol) server.  The front panel accessibility for this feature makes it possible to […]

  • Setting control deadband

    Setting control deadband Control stability in closed volume systems is essential in many applications including cell research and fuel cell testing. Managing oscillation loops in dual valve systems is a critical part of enabling precision control of these systems.  This led us to develop our controller deadband functionality. Balancing the operation of an inlet valve […]

  • Configuring an Alicat display

    Changing Alicat display configuration The large display on the front of your Alicat can be very useful, especially when configured for your specific needs. Read on to learn about contrast, back-light, and even rotating your display 180 degrees for mounting upside-down. Video Step-by-Step Instructions

  • Changing the control loop variable

    Changing the control loop variable: mass flow, volumetric flow, or pressure control An Alicat mass flow controller is usually set up to control mass flow, but it can instead be set to control volumetric flow or pressure.  Similarly, Alicat’s liquid flow meters can control either volumetric flow rate (default) or gauge pressure.  Simply change a […]

  • Changing setpoint and setpoint limits

    Changing setpoint and setpoint limits An Alicat can accept a setpoint from the front panel, a serial command, or an analog signal.  All you have to do is make sure the Alicat knows where to look for the setpoint.  Sometimes, you may want to limit the allowable setpoints to a specific range to avoid accidental […]

  • Selecting PID tuning terms and algorithms

    Setting the control loop type and gains Alicat controllers come equipped with two different tuning algorithms: PDF and PD²I tuning.  Every controller is custom tuned at the factory for your application, or given generic terms when the application is unknown.  If your device isn’t controlling as expected, perhaps ringing around the setpoint or taking a […]

  • Using the gas totalizer on a mass flow controller

    Using the gas totalizer on a mass flow controller Mass flow totalizing is used for measuring how much accumulated mass of a particular gas (or gas mixture) has been flowed in a process, where a meter alone will measure the rate of flow at any given moment. Alicat mass flow meters have a totalizer function […]

  • Using Gas Select and Composer

    Using Gas Select and Composer Alicat mass flow devices come with at least 98 selectable gases.  The Composer software is included on all mass flow devices and allows the user to create up to 10 different custom gas mixes. See below for instructions how to use gas select and Composer or learn more about Composer […]

  • Adjusting zero band (AKA deadband)

    Adjusting zero band (AKA deadband) Because Alicat measures flow using differential pressure, the readings are very sensitive.  Our Whisper Series can even measure the air conditioning in the room.  Sometimes all that noise, is just noise, and it’s helpful to add a zero band to the display.  This will display very small flow readings as […]

  • Changing engineering units

    Changing engineering units on an Alicat For ease of use, you can change the engineering units displayed on your Alicat or used in the serial data in the field.  You can even have the display using a different set of engineering units from the serial data. Devices will have all engineering units relevant to its […]