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Mass Flow Controllers with 20+ Gas Select Function
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- 130+ Gas Calibrations, Including: He, O2 , Neon, N2O, N2, Air, Argon, CO, CO2, Methane, Ethane, Propane, Butane, Acetylene, Ethylene, H2
- Pressure, Temperature, Volumetric Mass Flow Simultaneously Displayed
- Easy Operator Push Button Interface
- NIST Traceability Standard
FMA-2620A Model Options
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*Highlighted options are not compatible. Please select a different combination.
Flow Range
Output Signal
Max Operating Pressure
Max Process Temperature
Process Connection Type:
Process Connection Size:
Features
Category
Media type
Accuracy
Communications Protocol
Wetted Materials
Display
The FMA-2600A Series mass and volumetric flow controllers use the principle of differential pressure within a laminar flow field to determine and control mass flow rate. A laminar flow element (LFE) inside the meter forces the gas into laminar (streamlined) flow. Inside this region, the Poiseuille equation dictates that the volumetric flow rate be linearly related to the pressure drop. A differential pressure sensor is used to measure the pressure drop along a fixed distance of the LFE. This, along with the viscosity of the gas, is used to accurately determine the volumetric flow rate. Separate absolute temperature and pressure sensors are incorporated and correct the volumetric flow rate to a set of standard conditions. This standardized flow rate is commonly called the mass flow rate and is reported in units such as standard cubic feet per minute (SCFM) or standard liters per minute (SLM).
The controller uses a true proportional valve coupled to the flow body to control flow using the integral PID loop controller. Standard units include a 0 to 5 V output (4 to 20 mA optional) and RS232 communications. The gas-select feature and the setpoints can be adjusted from the front keypad or via RS232 communications. Volumetric flow, mass flow, absolute pressure, and temperature can all be viewed or recorded through the RS232 connection. It is also possible to multi-drop up to 26 units on the same serial connection to a distance of 46 m (150').
SPECIFICATIONS
Accuracy: ±(0.8% of reading + 0.2%FS)
Repeatability: ±0.2% FS
Turndown Ratio: 100:1
Control Response Time: 100 ms
Input Control Signal: 0 to 5 Vdc, RS232
Output Signal: 0 to 5 Vdc, RS232
Optional Input/Outputs: 4 to 20 mA, 0 to 10 Vdc
Operating Temperature: -10 to 50°C (14 to 122°F)
Zero Shift: 0.02%/ATM FS/°C
Span Shift: 0.02%/ATM FS/°C
Humidity Range: 0 to 100% RH, non-condensing
Excess Flow Rate: 2.4% FS
Wetted Materials: Small Valve: 303 & 302 Stainless Steel, FKM, Heat Cured Silicone Rubber, Glass Reinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, Brass, 430FR Stainless Steel, Silicon, Glass. Large Valve: 303 & 302 Stainless Steel, FKM, Heat Cured Silicone Rubber, Glass Reinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, 416 Stainless Steel, Silicon, Glass.
-LSS (Option):316LSS, 303SS, 430FRSS, Perfluoroelastomer standard, FKM, EPDM, Buna, Neoprene Maximum Pressure: Mass Flow Controllers: 145 psig
To Use in Volumetric Mode: Near atmosphere, 15 psig recommended maximum. Volumetric flowmeters and controllers not certified for accuracy at mass flow rates above the rated flow range of the meter. They are designed for near atmospheric pressure conditions only. The recommended maximum operating pressure is 15 psig Minimum Differential Pressure Required:
5 SLM and under: 5 psid; 10 to 250 SLM:
15 psid; 500 SLM: 5 psid; 1500 SLM: 10 psid
Supply Current: 0.250 A for 20 SLM and under; 0.75 A for 50 SLM and above (typical)
Supply Voltage: 12 to 30 Vdc for units
20 SLM and smaller; 24 to 30 Vdc for units
50 SLM and larger
Electrical Connections: 8-pin circular mini DIN
The controller uses a true proportional valve coupled to the flow body to control flow using the integral PID loop controller. Standard units include a 0 to 5 V output (4 to 20 mA optional) and RS232 communications. The gas-select feature and the setpoints can be adjusted from the front keypad or via RS232 communications. Volumetric flow, mass flow, absolute pressure, and temperature can all be viewed or recorded through the RS232 connection. It is also possible to multi-drop up to 26 units on the same serial connection to a distance of 46 m (150').
SPECIFICATIONS
Accuracy: ±(0.8% of reading + 0.2%FS)
Repeatability: ±0.2% FS
Turndown Ratio: 100:1
Control Response Time: 100 ms
Input Control Signal: 0 to 5 Vdc, RS232
Output Signal: 0 to 5 Vdc, RS232
Optional Input/Outputs: 4 to 20 mA, 0 to 10 Vdc
Operating Temperature: -10 to 50°C (14 to 122°F)
Zero Shift: 0.02%/ATM FS/°C
Span Shift: 0.02%/ATM FS/°C
Humidity Range: 0 to 100% RH, non-condensing
Excess Flow Rate: 2.4% FS
Wetted Materials: Small Valve: 303 & 302 Stainless Steel, FKM, Heat Cured Silicone Rubber, Glass Reinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, Brass, 430FR Stainless Steel, Silicon, Glass. Large Valve: 303 & 302 Stainless Steel, FKM, Heat Cured Silicone Rubber, Glass Reinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, 416 Stainless Steel, Silicon, Glass.
-LSS (Option):316LSS, 303SS, 430FRSS, Perfluoroelastomer standard, FKM, EPDM, Buna, Neoprene Maximum Pressure: Mass Flow Controllers: 145 psig
To Use in Volumetric Mode: Near atmosphere, 15 psig recommended maximum. Volumetric flowmeters and controllers not certified for accuracy at mass flow rates above the rated flow range of the meter. They are designed for near atmospheric pressure conditions only. The recommended maximum operating pressure is 15 psig Minimum Differential Pressure Required:
5 SLM and under: 5 psid; 10 to 250 SLM:
15 psid; 500 SLM: 5 psid; 1500 SLM: 10 psid
Supply Current: 0.250 A for 20 SLM and under; 0.75 A for 50 SLM and above (typical)
Supply Voltage: 12 to 30 Vdc for units
20 SLM and smaller; 24 to 30 Vdc for units
50 SLM and larger
Electrical Connections: 8-pin circular mini DIN
RoHS 2015/863 - View Certificate
CE Approved
UKCA
We have a FMA-2616A Mass Flow controller. Can we change the upstream valve configuration to downtream ourselves? Is there an introduction to the relevant operations? Is there a greater risk of damage to the instrument in such operations?
Thank you for your inquiry. The mass flow controller can work in vacuum conditions and it is recommended to have it returned via the Customer Care Group at CSReturns@omega.com and request to have the existing controller be used in vacuum conditions. The valve must be physically placed downstream of the flow to control accurately.
Date published: 2023-04-17
What is the minimum inlet pressure for the 0-5 SLPM model?
Thank you for your inquiry. The minimum pressure required is 2 PSI
Date published: 2024-04-26
Is there an option to prevent electrical noise via user-selectable mitigation level?
Thank you for your inquiry. Please compose an email to flow@omega.com and desribe the issue or concern about electrical noise the flow controller may be exposed or currently being exposed and have our Design Team respond.
Date published: 2023-10-09
I am interested in using Modbus protocol via RS232 to read data from this instrument. What register address correspond to what type of data (ie Mass flow, Volumetric flow, Pressure and Temperature)?
Thank you for your inquiry. Please refer to the manual that is available for MODBUS communication protocol and is found on the mass flow meter Product Page, FMA-1600A.
Date published: 2024-02-05
Is this tolerant of 100ppm SO2 or NO2?
Thank you for your inquiry. This controller can handle the corrosive gases in question, yet, you will need to purchase the '-LSS' version that is a custom part number which will be chemically compatible.
Date published: 2023-12-01
Is there another version on serial communication protocol for the FMA-2600 series that does not involve the HyperTerminal?
Thank you for your inquiry! Unfortunately, we do not offer any software with these units and with HyperTerminal not being included in newer Windows versions another program will be needed. Putty may be used as an alternate if HyperTerminal is not available
Date published: 2022-06-13
Do you have the distance from the center of the gas inlet hole to the edge of the device? I can attach a diagram showing which dimensions I need if there is a way to do that
Thank you for your inquiry about the mass flow meter. Please forward that picture or drawing to flow@omega.com for the distance you described.
Date published: 2023-01-27
Are the FMA-2600 series mas flow controllers rated for vacuum use?
Thank you for your inquiry about the mass flow controllers. Yes, it can, yet, the valve must be ordered with the valve on the down stream side of the controller and will have a suffix, '-DS.' to reflect. If not found on the website, please email flow@omega.com to request a quote for a controller with the '-DS.'
Date published: 2023-04-17
Accessories
Replacement 1.8M (6') 8 pin male Mini-DIN single ended, cable connector
$63.47
5 In Stock
1.8 M (6') 8-pin male right-angle Mini_DIN single ended connector cable
$77.19
0 In Stock
Accessories for FLR-1600/FLV-4600 Series
