Bidirectional Mass Flow Controllers (MCD Series)

MCD-Series bidirectional mass flow controller, shown with IPC option

MCD-Series bidirectional mass flow controller, shown with optional potentiometer control

Flow control like you’ve never seen before.

Alicat Scientific proudly introduces the world’s first bidirectional flow controller. Control flows into your process in one direction, and then switch directions. Or control flows into a closed process, and then vent the volume with no need for additional bleed valves.

Watch the MCD trailer videoWatch the MCD trailer video.

The most versatile flow controller in the world.

  • Measure mass flow and volumetric flow in both directions, plus absolute pressure and temperature.
  • Control mass or volumetric flow from a pressurized source or from vacuum.
  • Control absolute pressure or backpressure in a flowing process.
  • Control absolute pressure in a closed volume with automatic venting.

What will you do with yours?

Download MCD-Series Data Sheet

Also available with corrosion-resistant wetted materials (MCDS) or in the Whisper family with very low pressure drop (MCDW). Download the MCD White Paper here.

  • Available Ranges: from -0.5 to +0.5 sccm to -3000 to +3000 slpm with 200:1 turndown
  • Accuracy and Repeatability: +/- (0.8% of the reading + 0.2% of the total positive and negative full-scale range)
  • Control response time: less than 100 ms
  • Maximum inlet pressure: 145 psig (MCD and MCDS) or 50 psig (MCDW)
  • Display: 2.1″ monochrome LCD digital display with touch pad interface

Click here for the MCD-Series technical data sheet.

Standard Gas List for Alicat Mass Flow Meters and Controllers

All Alicat Scientific mass flow meters and mass flow controllers come standard with the following gas properties data, yielding 30 true gas calibration curves. Users may switch between selected gases on the fly without any need for recalibration of the mass flow meter or controller.
AirNe - NeonC-25 - 75% Ar + 25% CO2
Ar - ArgonO2 - OxygenC-10 - 90% Ar + 10% CO2
CH4 - MethaneC3H8 - PropaneC-8 - 92% Ar + 8% CO2
CO - Carbon Monoxiden-C4H10 - normal-ButaneC-2 - 98% Ar + 2% CO2
CO2 - Carbon DioxideC2H2 - AcetyleneC-75 - 75% CO2 + 25% Ar
C2H6 - EthaneC2H4 - EthyleneA-75 - 75% Ar + 25% He
H2 - Hydrogeni-C4H10 - iso-ButaneA-25 - 75% He + 25% Ar
He - HeliumKr - KryptonA1025 - 90% He + 7.5% Ar + 2.5% CO2 (Helistar A1025)
N2 - NitrogenXe - XenonStar29 - 90% Ar + 8% CO2 + 2% O2 (Stargon CS)
N2O - Nitrous OxideSF6 - Sulfur HexafluorideP-5 - 95% Ar + 5% CH4

Custom gas mixes with up to 4 of the listed gases can be created. Please contact Alicat to inquire about custom gas mixtures.

Alicat mass flow controllers are engineered to meet the following design criteria:

Simplicity

The MCD series mass flow controller is very easy to use. With the local display, users can make changes to the configuration of the unit without the need for computers, complicated software or scripts.

Mass Flow Controller Accuracy

Alicat MCD series mass flow controllers are rated with accuracies of +/-(0.8% of reading + 0.2% of full scale)

Mass Flow Controller Repeatability

Alicat’s patented technology allow its mass flow controllers to have very few moving parts. All of the MFC’s internal components are fixed in place resulting in very little physical change inside the MFC. Little physical change in the flow cavity means higher rates of consistency and repeatability. Alicat MCD series mass flow controllers have a repeatability of +/-0.2% of FS

Reduced Cost of Ownership

Alicat MCD series flow controllers require very little power to run, thereby reducing operating costs. MCD series flow controllers also have less pressure drop when compared to similar flow devices. Reduced pressure drop means more process fluids go into your process and not into your measurement devices. The MCD series mass flow controllers also measure pressure, temperature and volumetric flow in addition to mass flow which means fewer instruments you will have to buy and install.

Control Speed

The Alicat MCD series mass flow controller has a response time of less than 10ms and a control time of 100ms making it one of the fastest naturally responding mass flow controllers on the market today. Watch an Alicat mass flow controller responding to set point changes.

Versatility

MCD series mass flow controllers are available in any flow range from 0.5 sccm through 3000 slpm. The MFCs are equipped with analog outputs and inputs. Adding a totalizer allows users to see how much media has flowed through the MFC, making it a great way to monitor usage and identify waste. They can also be used in applications where flow control into a vacuum is critical.

Dependability

Alicat mass flow controllers around the world are being used in processes like pharmaceutical and semiconductor manufacturing, fuel cell research, auto paint application, and emissions compliance equipment. Alicat Scientific mass flow controller calibrations are NIST-traceable.

Standard Features

  • Fully functional digital display
  • Multiple parameter measurement: mass flow, volumetric flow, temperature, and pressure
  • Low pressure drop operation
  • No warm up time
  • Viton seals
  • 8 pin mini-DIN electronic connector
  • Standard barrel type power connector
  • RS-232 Multi-drop digital input and output
  • Choice of 0-5Vdc, 0-10Vdc, 1-5Vdc, or 4-20mA analog input and output
  • User-adjustable PID valve tuning
  • 30 user-selectable on-board gas calibrations
  • 200:1 turndown ratio
  • NPT process connections
  • Lifetime warranty

Product Options

  • Flow totalizer
  • Locking 6-pin industrial, 9-pin D-sub or 15-pin D-sub connector
  • ProfiBUS digital output
  • Modbus digital output
  • RS-485 digital output
  • Secondary analog output
  • Remote panel mount display
  • EPDM seals
  • NeSSI flow body
  • Oxygen cleaning
  • SAE process connections
  • VCR or VCO welded fittings
  • 5VDC, 12VDC, 24VDC, or open drain flow alarms (high or low)
  • Additional calibration points
  • Custom gas blends with up to 4 gases
  • Stainless steel valves
  • Integrated potentiometer control

Included in the Box:

  • MCD-Series bidirectional mass flow controller
  • NIST-traceable calibration certificate
  • Alicat mass flow controller operating manual

Optional Accessories:

LSPM

    Local SetPoint Module
MCD-Series bidirectional mass flow controller, shown with IPC option

MCD-Series bidirectional mass flow controller, -2 to +2 slpm, shown with IPC option

MCD-Series bidirectional mass flow controller, shown with IPC option

MCD-Series bidirectional mass flow controller, -2 to +2 slpm, shown with IPC option

MCD-Series bidirectional mass flow controller, shown with IPC option

MCD-Series bidirectional mass flow controller, -2 to +2 slpm, shown with IPC option

The following tables list part numbers and US base prices for Alicat MCD-Series mass flow meters. Actual part numbers may vary based on selected options, some of which will also increase the price of the unit. To build a quote right now, call Alicat at 888-290-6060 or email us to speak with an applications specialist. A real person will answer your call within 3 rings.

Alicat MCD and MCDS Series Bidirectional Mass Flow Controllers

Full-scale Range
Standard Part Number
and Price (US)
MCDS Part Number
and Price (US)
Process
Connections
Pressure
Drop at Full Scale
-0.5 to +0.5 sccmMCD-0.5SCCM-D
$2,500.00
MCDS-0.5SCCM-D
$2,850.00
10-32 (M-5)1.0 psi
-1.0 to +1.0 sccmMCD-1SCCM-D
$2,500.00
MCDS-1SCCM-D
$2,850.00
10-32 (M-5)1.0 psi
-2.0 to +2.0 sccmMCD-2SCCM-D
$2,300.00
MCDS-2SCCM-D
$2,700.00
10-32 (M-5)1.0 psi
-5.0 to +5.0 sccmMCD-5SCCM-D
$2,300.00
MCDS-5SCCM-D
$2,700.00
10-32 (M-5)1.0 psi
-10 to +10 sccmMCD-10SCCM-D
$2,050.00
MCDS-10SCCM-D
$2,500.00
10-32 (M-5)1.0 psi
-20 to +20 sccmMCD-20SCCM-D
$2,050.00
MCDS-20SCCM-D
$2,500.00
10-32 (M-5)1.0 psi
-50 to +50 sccmMCD-50SCCM-D
$2,050.00
MCDS-50SCCM-D
$2,500.00
10-32 (M-5)1.0 psi
-100 to +100 sccmMCD-100SCCM-D
$1,850.00
MCDS-100SCCM-D
$2,300.00
1/8" NPT(F)1.0 psi
-200 to +200 sccmMCD-200SCCM-D
$1,850.00
MCDS-200SCCM-D
$2,300.00
1/8" NPT(F)1.0 psi
-500 to +500 sccmMCD-500SCCM-D
$1,850.00
MCDS-500SCCM-D
$2,300.00
1/8" NPT(F)1.0 psi
-1.0 to +1.0 slpmMCD-1SLPM-D
$1,850.00
MCDS-1SLPM-D
$2,300.00
1/8" NPT(F)1.5 psi
-2.0 to +2.0 slpmMCD-2SLPM-D
$1,850.00
MCDS-2SLPM-D
$2,300.00
1/8" NPT(F)3.0 psi
-5.0 to +5.0 slpmMCD-5SLPM-D
$1,850.00
MCDS-5SLPM-D
$2,300.00
1/8" NPT(F)2.0 psi
-10 to +10 slpmMCD-10SLPM-D
$1,850.00
MCDS-10SLPM-D
$2,300.00
1/8" NPT(F)5.5 psi
-20 to +20 slpmMCD-20SLPM-D
$2,050.00
MCDS-20SLPM-D
$2,500.00
1/8" NPT(F)20.0 psi
-50 to +50 slpmMCRD-50SLPM-D
$2,550.00
MCRDS-50SLPM-D
$3,000.00
1/4" NPT(F)2.0 psi
-100 to +100 slpmMCRD-100SLPM-D
$2,750.00
MCRDS-100SLPM-D
$3,150.00
1/4" NPT(F)3.2 psi
-200 to +200 slpmMCRD-250SLPM-D
$2,900.00
MCRDS-250SLPM-D
$3,450.00
1/2" NPT(F)2.4 psi
-500 to +500 slpmMCRD-500SLPM-D
$3,000.00
MCRDS-500SLPM-D
$3,550.00
3/4" NPT(F)6.5 psi
-1000 to +1000 slpmMCRD-1000SLPM-D
$3,300.00
MCRDS-1000SLPM-D
$3,800.00
3/4" NPT(F)14.0 psi
-1500 to +1500 slpmMCRD-1500SLPM-D
$3,800.00
MCRDS-1500SLPM-D
$4,250.00
3/4" NPT(F)17.0 psi
-2000 to +2000 slpmMCRD-2000SLPM-D
$4,250.00
MCRDS-2000SLPM-D
$4,600.00
3/4" NPT(F)28.6 psi
-3000 to +3000 slpmMCRD-3000SLPM-D
$4,700.00
MCRDS-3000SLPM-D
$5,050.00
1-1/4" NPT(F)16.8 psi

Alicat MCDW-Series Mass Flow Controllers

Full-scale Range
MCDW Part Number
and Price (US)
Process
Connections
Pressure
Drop at Full Scale
-0.5 to +0.5 sccmMCDW-0.5SCCM-D
$2,800.00
10-32 (M-5)0.06 psi
-1.0 to +1.0 sccmMCDW-1SCCM-D
$2,800.00
10-32 (M-5)0.06 psi
-2.0 to +2.0 sccmMCDW-2SCCM-D
$2,600.00
10-32 (M-5)0.06 psi
-5.0 to +5.0 sccmMCDW-5SCCM-D
$2,600.00
10-32 (M-5)0.08 psi
-10 to +10 sccmMCDW-10SCCM-D
$2,350.00
10-32 (M-5)0.08 psi
-20 to +20 sccmMCDW-20SCCM-D
$2,350.00
10-32 (M-5)0.07 psi
-50 to +50 sccmMCDW-50SCCM-D
$2,350.00
1/8" NPT(F)0.07 psi
-100 to +100 sccmMCDW-100SCCM-D
$2,150.00
1/8" NPT(F)0.07 psi
-200 to +200 sccmMCDW-200SCCM-D
$2,150.00
1/8" NPT(F)0.07 psi
-500 to +500 sccmMCDW-500SCCM-D
$2,150.00
1/8" NPT(F)0.08 psi
-1.0 to +1.0 slpmMCDW-1SLPM-D
$2,150.00
1/8" NPT(F)0.10 psi
-2.0 to +2.0 slpmMCDW-2SLPM-D
$2,150.00
1/8" NPT(F)0.18 psi
-5.0 to +5.0 slpmMCRDW-5SLPM-D
$2,750.00
1/4" NPT(F)0.10 psi
-10 to +10 slpmMCRDW-10SLPM-D
$2,750.00
1/4" NPT(F)0.12 psi
-20 to +20 slpmMCRDW-20SLPM-D
$2,950.00
1/4" NPT(F)0.26 psi
-40 to +40 slpmMCRDW-40SLPM-D
$3,100.00
1/2" NPT(F)0.14 psi
-50 to +50 slpmMCRDW-50SLPM-D
$3,250.00
3/4" NPT(F)0.17 psi
-100 to +100 slpmMCRDW-100SLPM-D
$3,450.00
3/4" NPT(F)0.30 psi
-200 to +200 slpmMCRDW-250SLPM-D
$3,600.00
3/4" NPT(F)0.69 psi
-500 to +500 slpmMCRDW-500SLPM-D
$4,550.00
3/4" NPT(F)0.69 psi