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Mass Flow Controllers with 20+ Gas Select Function
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
FMA-2600 SERIES
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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
  • Full Scale Ranges from 0.5 SCCM to 3000 LPM
  • Response Time of 100 milliseconds Typical
  • Turndown Ratio of 100:1 Typical
  • Position Insensitive
  • Accuracy of ±1% Full Scale
  • RS232 Standard
  • No Warm Up Time
 Specs
 Manuals (contact with email : [email protected])
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Description

Description

The FMA-2600A Series mass and volumetric flowcontrollers use the principle of differential pressurewithin a laminar flow field to determine and controlmass flow rate. A laminar flow element (LFE) insidethe meter forces the gas into laminar (streamlined)flow. Inside this region, the Poiseuille equation dictatesthat the volumetric flow rate be linearly related to thepressure drop. A differential pressure sensor is usedto measure the pressure drop along a fixed distance ofthe LFE. This, along with the viscosity of the gas, isused to accurately determine the volumetric flow rate.Separate absolute temperature and pressure sensors are incorporated and correct the volumetric flow rate toa set of standard conditions. This standardized flowrate is commonly called the mass flow rate and isreported in units such as standard cubic feet perminute (SCFM) or standard liters per minute (SLM).

The controller uses a true proportional valve coupledto the flow body to control flow using the integral PIDloop controller. Standard units include a0 to 5 V output (4 to 20 mA optional) and RS232communications. The gas-select feature and thesetpoints can be adjusted from the front keypad or viaRS232 communications. Volumetric flow, mass flow,absolute pressure, and temperature can all be viewedor recorded through the RS232 connection. It is alsopossible to multi-drop up to 26 units on the same serialconnection 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, GlassReinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, Brass, 430FRStainless Steel, Silicon, Glass.Large Valve: 303 & 302 Stainless Steel, FKM, Heat Cured Silicone Rubber,Glass Reinforced Polyphenylene Sulfide, Heat Cured Epoxy, Aluminum, Gold, 416Stainless Steel, Silicon, Glass.Maximum Pressure: Mass Flow Controllers: 145 psig
To Use in Volumetric Mode: Near atmosphere, 15 psigrecommended maximum. Volumetric flowmeters and controllers not certified for accuracy at mass flow ratesabove the rated flow range of the meter. They are designedfor near atmospheric pressure conditions only. Therecommended maximum operating pressure is 15 psigMinimum 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 andunder; 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
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