Product Guide

MCD–Series: Bidirectional Gas Mass Flow Controllers

Product description:

• 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, PROFINET, Modbus (RTU and TCP/IP), or serial communications for easy integration into your industrial process.

MCD-Series standard specs

• Full scale ranges: 0.5 SCCM to 3000 SLPM (Devices are custom-ranged)
• 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

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.

Build and performance options

• Communication protocols: Analog, RS–232, RS–485, DeviceNet, EtherCAT, EtherNet/IP, Modbus RTU or TCP/IP, PROFIBUS, PROFINET
• 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
• Aggressive gas compatibility: Models with wetted materials compatible with many pure corrosive gases and most refrigerant gases, in addition to all non-corrosive gases and a variety of liquids also available.

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.

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Product information

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