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    Flow Controllers & Meters

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    MCD–Series: Bidirectional Gas Mass Flow Controllers

    MCD-Series Bidirectional Gas Mass Flow Controllers can control mass flow, volumetric flow, or gas pressure in both directions while simultaneously measuring flow, pressure, and temperature.
    • Versatile & accurate. Real-time control of flow or pressure in both directions with NIST-traceable accuracy to ±0.5% of reading or ±0.1% of full scale for 98+ gases and 20 custom-defined mixtures.
    • Fast control, multivariate data. Millisecond-response times immediately upon powering up, to control either mass flow, volumetric flow, or pressure and display instantaneous flow, pressure, and temperature readings, in your choice of engineering units.
    • Easy integration. Custom process ports and electrical connectors, and your choice of EtherNet/IP, EtherCAT, DeviceNet, Profibus, Modbus (RTU and TCP/IP), or serial communications for easy integration into your industrial process.

    Request a quote

    Accessories included with purchase

    Device specs and customization options

    Specs

    Devices are custom ranged from 0.5 SCCM full scale to 3,000 SLPM full scale.

    MCD-Series standard specs
    • Full scale ranges: 0.5 SCCM to 3000 SLPM
    • Control range: 0.01% to 100% of full scale
    • Accuracy: ±0.6% of reading or ±0.1% of full scale, whichever is greater
    • Optional high-accuracy: ±0.5% of reading or ±0.1% of full scale, whichever is greater
    • Repeatability: ±(0.1% of reading + 0.02% of full scale)
    • Response time: as fast as 30 ms
    • Warm–up time: <1 s
    • Operating temperature: –10°C to +60°C
    • Full scale operating pressure: 160 PSIA

    For a comprehensive device guide, read the mass flow controller operating manual.

    Device Features
    Included with each device
    • Multi-variable process measurements: Simultaneously measure mass flow, volumetric flow, gas pressure, and gas temperature.
    • User changeable units of measurement: Change the unit of measurement for pressure, flow, or temperature from our extensive list of engineering units.
    • Gas Select: Select your process gas from any of the 98+ preloaded NIST-traceable gas calibrations in our gas list.
    • Composer™: Define 20 custom gas mixtures of up to 5 constituent gases using our Composer™ firmware.
    • Monochrome backlit LCD with integrated touchpad: Easily read measurements using the backlit display and control configurations with the user-friendly integrated touchpad.
    • User adjustable setpoint ramping & limits: Configurable ramp rates allow the process variable to be controlled as fast or as slow as desired, and configurable setpoint limits protect processes from inadvertent setpoint changes.
    • User adjustable standard temperature and pressure (STP) conditions: Quickly change reference conditions without need for recalibration.
    • Valve close override and valve open override: Utilize alarms to quickly vent your system or stop all flow as needed.
    Request at time of purchase | Free
    • Optional integrated totalizers & batch control: Totalize mass flow every 1 ms for precise tracking of total flow over time and use batch control to dispense precise volumes.
    Request at time of purchase | Additional cost
    • Optional integrated potentiometer control: Use the integrated potentiometer to adjust setpoints with the simple turn of a knob.
    Device Customization Options
    Build and performance options
    • Communication protocols: Analog, RS–232, RS–485, DeviceNet, EtherCAT, EtherNet/IP, Modbus RTU or TCP/IP, PROFIBUS
    • Displays: Backlit monochrome or color; integrated or panel–mount
    • Process connections: NPT, SAE, AN, BSPP/G, compression, VCR, or VCO fittings
    • Elastomers: Viton, FFKM, EPDM, Silicone
    • Calibration: High-accuracy; custom calibration points
    Visit the device customization page
    Valve options & PID tuning

    Your mass flow controller may be customized with one of the following valving options to ensure optimal performance under your expected process conditions.

    • MCD: small proportional control valve for flow ranges of 20 SLPM and below
    • MCD with PCA designation: high-performance proportional control valve used for some applications with higher pressures
    • MCPD: small proportional control valve with the largest orifice (not available for corrosive configurations)
    • MCRD: nearly frictionless large Rolamite proportional valve for flow rates of 50 SLPM and above

    Custom PID valve tuning ensures maximum performance for your specific process conditions.

    Learn about valve sizing and PID tuning options
    Optional Accessories
    Accessories | Sold separately
    • Process port fittings and filters
    • Power supplies
    • Communications cables and conversion cables
    • BB3 and BB9 multi-drop breakout boxes
    Visit the accessories page

    Not exactly what you’re looking for?

    • Explore multidirectional controllers for low pressure drop and anti-corrosives.
    • Check out our other flow or pressure control and measurement solutions.
    • Our expert team of applications engineers is available to provide additional information, discuss your application, or answer any questions you may have.

    Contact an applications engineer

    Learn about diverse flow control applications in our knowledge base
    Photo of MCD-Series bidirectional mass flow controller
    Learn More
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