XFM
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Catalog excerpts

XFM - 1

DIGITAL MASS FLOW METER Design Features ■ Supports up to 23 Engineering Units (including User Defined). ■ Stores calibration data for up to 10 gases. ■ Programmable Totalizer indicates total gas quantity. ■ High and low gas flow Alarm limits with preset delay interval. ■ Two sets of user-programmable electromechanical SPDT relays with latch option. ■ User-selectable analog 0-5 Vdc or 4-20mA outputs. ■ Internal Conversion factors for up to 32 gases. ■ Digital Interface (RS-232 / RS-485, Profibus DP available). ■ Multi-Drop Capability of up to 256 units (RS-485 option). ■ Optional Profibus DP interface with l&M functionality. ■ Automatic sensor zero offset adjustment (via digital interface or local push button). ■ Local 2x16 characters LCD display* with adjustable back light (optional). Profibus Interface * LCD display is not available for Profibus DP interface option. www.aalborg.com - e-mail El info@aalborg.com - W 845.770.3000 - fax 845.770.3010 - Toll Free in U.S.A. and Canada 1.800.866.3837

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XFM - 2

DIGITAL MASS FLOW METER XFM Digital Mass Flow Meters The flow rate can be displayed in 23 different volumetric flow or mass flow engineering units including user specific. Flow meters can be programmed remotely via RS-232 /RS-485 or optional Profibus DP interface. XFM flow meters support various functions including: programmable flow totalizer, high and low flow alarm, automatic zero adjustment, 2 relay outputs, jumper selectable 0-5 Vdc or 4-20 mA analog outputs, status LED diagnostic, capable to store calibration for up to 10 different gases, internal or user-specific K-factors. Optional...

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XFM - 3

DIGITAL MASS FLOW METER TABLE 6 - SPECIFICATIONS FLOW MEDIUM: Please note that XFM Mass Flow Meters are designed to work only with clean gases. Never try to measure flow rates of liquids with any XFM. Performed at standard conditions [14.7 psia (101.4 kPa) and 70 FF (21.1FC)] unless otherwise requested. Installation Level II; Pollution Degree II. FLOW ACCURACY ±1% of FS at calibration temperature and pressure. FLOW TEMPERATURE COEFFICIENT: 0.15% of full scale/ FC or better. FLOW PRESSURE COEFFICIENT: 0.01% of full scale/psi (6.895 kPa) or better. FLOW RESPONSE TIME: 600ms time constant;...

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XFM - 4

DIGITAL MASS FLOW METER Multi-Gas Calibration Leak Integrity The XFM is capable of storing primary calibration data for up to 10 gases. This feature allows the same XFM to be calibrated for multiple gases while maintaining the rated accuracy on each. 1 x 10-9 smL/sec of Helium maximum to the outside environment. Engineering Units The measured gas flow and associated totalizer data are scaled directly in engineering units via the digital interface. Conversion Factors THE FOLLOWING 23 UNITS OF MEASURE ARE SUPPORTED: Conversion factors for up to 32 gases are stored in the XFM. In addition,...

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XFM - 5

DIGITAL MASS FLOW METER Profibus Option TABLE 10 - DIMENSIONS FOR XFM [INCH] MODEL Compression Fitting PROFIBUS CAPABILITY * For optional fittings see table 6. www.aalborg.com - e-mail El info@aalborg.com - W 845.770.3000 - fax 845.770.3010 - Toll Free in U.S.A. and Canada 1.800.866.3837

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XFM - 6

ORDERING INFORMATION FOR DIGITAL MASS FLOW METER MODEL MAX FLOW (N2) 10 L/min 17 50 L/min 37 100 L/min 47 MATERIAL A Aluminum S Stainless Steel Viton® Buna® EPR PTFE / Kalrez® MODEL XFM 17, 37 XFM 17 XFM 17, 37 XFM 37, 47 XFM 17, 37 FITTINGS A 1/4" Compression B 1/8" Compression C 1/4" VCR® D 3/8" Compression H 6mm Compression DISPLAY N NO Display L LCD Readout OUTPUT SIGNAL A 0-5 VDC B 4-20 mA DIGITAL INTERFACE 2 RS232 RS485 5 PROFIBUS 9 EXAMPLE: XFM17S-VAL6-A2 5 L/min [N2] 20 psig SPECIFY: FLOW RANGE, GAS, and PRESSURE *n.a. = not applicable. XFM17 stainless steel, Viton® seals, 1/4"...

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