FLOWCONTROLLER GAS MASS 250LPM_1142732
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FLOWCONTROLLER GAS MASS 250LPM

Accuracy±(0.8R + 0.2FS)
CertifiedYes
CommunicationsRS-232
DescriptionGas Mass Flow Controller, 2.500 to 250.0 LPM
Display Type7-line x 4-digit LCD; 0.25"H flow display
Electrical Connections8-pin circular mini-DIN
Fluid TypeGAS
Gas typeAcetylene (C2H2), Air, Argon (Ar), i-Butane (i-C4H10), n-Butane (n-C4H10), Carbon Dioxide (CO2), Carbon Monoxide (CO), Deuterium (D2), Ethane (C2H6), Ethylene/Ethene (C2H4), Helium (He), Hydrogen (H2), Krypton (Kr), Methane (CH4), Neon (Ne), Nitrogen (N2)
Max flow rate (LPM)250
Max Flow Rate (mLmin)250000
Max Operating Temperature (DegreeC)50
Max Operating Temperature (DegreeF)122
Media TypeAir, Hydrogen, Acetylene;Air;Argon;Carbon Dioxide;Carbon Monoxide;Helium;Hydrogen;Nitrogen;Oxygen, Nitrogen, Helium, Water, Argon, Air;Nitrogen, Oxygen
Min Flow Rate (mLmin)2500
Min Operating Temperature (DegreeC)-10
Min Operating Temperature (DegreeF)14
Output0 to 5 VDC
Output (Voltage)Yes
Process connection1/2" NPT(F)
Repeatability±0.2%
Response Time (msec)50
Turn-down ratio100:1
Wetted Materials302, 303, and 410 SS; Viton®, silicone RTV, glass-reinforced nylon, aluminum, brass, silicon, glass
Instruction Manual
View Virtual Catalog - English - gy44-0368.pdf
Overview
  • Versatility and high accuracy from a laminar-based mass flow controller
  • Accuracy of ±0.8% of reading ±0.2% full-scale; repeatability of ±0.2%
  • Measure 30 standard gases—user selectable from display
  • 100 to 1 turndown with ranges of 1 SCCM full-scale up to 1000 SLPM
  • Models with 4 to 20 mA output or totalizer are available

These meters measure flow via pressure drop across a laminar flow element (LFE). Because the flow element makes the flow stream laminar, placement in the process does not require straight pipe runs upstream or downstream of the meter, greatly simplifying installation. As compared to thermal mass technologies, the LFE design provides an ultrafast response within 10 milliseconds and offers “instant
on” with no warm-up time.

An integrated keypad around the display is all that is required to program the unit for service. The 0 to 5 VDC output allows transmission of the flow value to a remote display, recorder, or controller regulating a valve or pump.

Flow controllers feature an integrated PID to direct the unit’s response to process changes. Flow set point is established with keypad, the optional set point control module, a 0 to 5 V signal, or an RS-232 input signal. Order set point control modules separately from the table. For portable flow metering applications, order the battery pack listed under accessories.

Whats Included:

120/230 VAC power adapter with communications cable 32929-89 and NIST-traceable calibration report supplied by the manufacturer.

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