Thermal mass flow meter ST50

for nitrogenfor airfor compressed air

The Model ST50 is a compact, low cost solution for accurate, repeatable flow rate measurement of air, compressed air or nitrogen. This insertion-style flow meter has no moving parts and is available in probe lengths for installation into pipe diameters from 2.5 inches to 24 inches [63 mm to 610 mm]. It is easily connected into the pipe via a 1/2 inch or 3/4 inch NPT compression fitting. The ST50 electronics are housed in rugged, IP67 rated enclosure with dual conduit ports in either NPT or M20 threading. The instrument comes standard with dual 4-20 mA outputs - one for flow rate, and one for temperature. A 500 Hz pulse output (for external totalizer) can be added as an option. The transmitter/electronics can be integrally mounted with the flow element (probe), or be remote mounted to best match your installation situation. The ST50 flow sensing element features precision, platinum RTD in small diameter, "equal-mass," all-metal thermowells to provide superior accuracy, repeatability and fast response. Applications Wastewater treatment aeration control Burner and furnace air flow control HVAC duct/damper control Blower and dryer air flow control Lake, pond and aquaculture aeration Compressed air distribution measurements Specifications Media Compatibility: Air Compressed Air Nitrogen Agency Approvals: FM/CSA: - Class 1, Div.2, Groups A,B,C,D; T4 Output Signals: Optional 0-500 Hz pulse for totalizer Digital Display (Optional): LCD, ±9999 counts, user scalable to flow rate engineering units or 0-100% Pipe/Line Size Compatibility: 2" to 24" [51 mm to 610 mm] Flow Element Installation: Insertion Type: Thermal dispersion