Thermal Mass Flow Meters

Sage Industrial Usage

Overview

Flow Meter is thermal dispersion type, utilizing constant temperature difference method of measuring Gas Mass Flow Rate.

It contains two reference grade platinum RTD sensors clad in a protective 316 SS sheath. Features direct Mass Flow for gases, wide rangeability, low pressure drop, very low end sensitivity, and no moving parts. Flow Meter is microprocessor based, does not have any potentiometers, and has ModbusT RS485 RTU communications. Flow Meter is powered by 24 VDC (15 VDC optional or 115/230 VAC). The power dissipation is under 2.5 watts (e.g. under 100 ma at 24 VDC). Power and output terminals are in a separate compartment for ease of installation.

Electronics is with Explosion Proof, NEMA 4X windowed dual compartment enclosure with local display. The display is a high contrast photo-emissive OLED display, and it displays Mass Flow Rate, Totalized Flow and Temperature as well as a graphical representation of Flow Rate in a horizontal bar graph format. In addition, the calibration milliwatts (mw) is continuously displayed, providing ongoing diagnostics. Flow meter provides a 4 to 20 ma output (ground based) proportional to Mass Flow Rate as well as Pulsed Outputs of Totalized Flow (24 VDC solid state transistor drive).

Feature

• Integral Windowed Explosion Proof Enclosure - Dual Compartment with separate terminal access
• 24 VDC (15 VDC optional) with current dissipation of less than 100 ma, or 115VAC/230 VAC
• Very High Contrast Photo-emissive OLED Display
• Displays numerical and graphical Flowrate, Totalized Flow and Temperature as well as Calibration milliwatts (mw) for ongoing diagnostics
• 4-20 ma (ground based) output of Flow Rate and Pulsed Outputs of Totalized Flow (24 VDC Solid State Transistor Drive)
• Pulsed Outputs of Totalized Flow (24 VDC Solid State Transistor Drive)
• Modbus Compliant RS485 RTU communications
• Single Channel Operation
• Accuracy of +/- 1% of Reading +/- 0.5% of Full Scale
• Zero Calibration Self Check Diagnostics
• Common Units of Flow Measurement: SCFM, SCFH, SCCM, NCMM, NCMH, KG/S, KG/M, KG/H, LBS/S, LBS/M, LBS/H, SLPM, SLPH
• Common Units of Totalized Flow: SCF, SCF, SCC, NCM, KG, LBS, SL
• Common Units of Velocity: SFPM, SFPS, NMPM, NMPS, NMPH
• Temperature Units: °C and °F

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