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Low Pressure Drop Gas Mass Flow Controllers For Clean Gases
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
FMA-LP2600A
PLACE ORDER 
  • 130+ Gas Calibrations Including Pure and Mixed Gases
  • Pressure, Temperature, and Mass Flow Simultaneously Displayed
  • Easy-to-Use Pushbutton Interface
  • NIST Traceability Standard
  • Full Scale Ranges from 0.5 SCCM to 500 SLM
  • Response Time of 50 to 100 ms Typical
  • Turndown Ratio of 200:1
  • Position Insensitive
  • ±0.8% Reading Accuracy
  • RS232 Standard
  • Custom Live Gas Blend Programming
  • Store Up to 20 User Defined Gas Blends
 Specs
 Manuals (contact with email : [email protected])
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Description

Description

The FMA-LP2600A Series mass flow controllers usethe principle of differential pressure within a laminarflow field to determine and control mass flow rate.A laminar flow element (LFE) inside the meter forcesthe gas into laminar (streamlined) flow. Inside thisregion, the Poiseuille equation dictates that thevolumetric flow rate be linearly related to the pressuredrop. A differential pressure sensor is used tomeasure 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 sensorsare incorporated and correct the volumetric flow rateto a set of standard conditions. This standardizedflow rate is commonly called the mass flow rateand is reported in units such as standard cubiccentimeters per minute (SCCM) or standard litersper minute (SLM).

The controller uses a true proportional valve coupledto the flow body to control flow using the integralPID loop controller. Standard units include a0 to 5V output (4 to 20 mA optional) and RS232communications. The gas-select feature and thesetpoints can be adjusted from the front keypad orvia RS232 communications. Volumetric flow, massflow, absolute pressure, and temperature can all beviewed or recorded through the RS232 connection.It is also possible to multi-drop up to 26 units on thesame serial connection to a distance of 46 m (150').

Specifications
Accuracy: ±(0.8% of reading + 0.2% FS)
Repeatability: ±0.2% FS
Turndown Ratio: 200:1
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: 303 and 302 SS, FKM, silicone RTV (rubber), glass-reinforced nylon, aluminum, brass, 410 SS, silicone, glass; >250 SLM: 416 SS and nickel replace brass
Maximum Pressure: 50 psig
To Use in Volumetric Mode: Near atmosphere, 15 psig recommended maximum. Volumetric flow meters 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
Supply Current: 0.250 A for 20 SLM and under; 0.75 A for 50 SLM and above (typical)
Supply Voltage: 15 to 30 Vdc for units 2 SLM and smaller; 24 to 30 Vdc for units 5 SLM and larger
Electrical Connections: 8-pin circular mini DIN
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