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เครื่องวัดอัตราการไหลของแก๊ส ST98HP and ST98UP Mass Flow Meters

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The ST98 High and Ultra High Purity mass flowmeters are ideally suited for the pharmaceutical, biotech, food & beverage and semiconductor industries.
  • หมวดหมู่ : เครื่องวัดอัตราการไหล Thermal Mass Flow meter
  • รหัสสินค้า : 000154

รายละเอียดสินค้า เครื่องวัดอัตราการไหลของแก๊ส ST98HP and ST98UP Mass Flow Meters

 

ST98HP and ST98UP Mass Flow Meters
for High Purity Air and Gas Applications

Gas Flow Meter ST98HP and ST98UP


Mass Flow Meter Summary

The ST98 High and Ultra High Purity mass flowmeters are ideally suited for the pharmaceutical, biotech, food & beverage and semiconductor industries. FCI's thermal dispersion technology provides exceptionally accurate and repeatable indications of mass flow rate. The sensing element combines two matched precision resistance temperature detectors (platinum RTDs). The active RTD is preferentially heated with a constant current. The reference RTD is preferentially heated with a constant current. The reference RTD senses at the process fluid temperature. As flow passes the element a resistance differential is produced proportional to the mass flow rate.

Applications

 
High purity gas monitoring Condenser/evaporator flow control
Pill coater air flow monitoring Scrubber gas discharge monitoring
CIP and SIP flow and temperature monitoring Process flow measurement and monitoring


Specifications

Flow Range: 2.0  to 3183 SCFM [3.4 to 5409 NCMH] in air at standard conditions for 70°F [21.1°C] and 14.7 psia [1.01325 bar(a)], typical to most gases. All gases must be compatible with the flow element material.
Accuracy: (at calibrated conditions)
Flow: ± 1% reading + 0.5% full scale accuracy (standard).
Temperature: ± 2° F [± 1° C] (for display only; flow rate must be grater than 5AFPS [1.5 AMPS])
Temperature Coefficient:
With optional temperature compensation. Valid from 10% to 100% of full-scale calibration
Flow: Maximum ± 0.015% of reading/ºF up to 850ºF [±0.03% of reading/ºC up to 454 ºC]
Repeatability:
Flow: ± 0.5% reading
Temperature: ± 1° F [± 0.6° C] (flow rate must be greater than 5 AFPS [1.5 AMPS])
Turndown Ratio: Factory set and field adjustable from 10:1 to 100:1 within the calibrated flow range.
Temperature Compensation:
Standard: ± 30° F [± -1° C]
Optional: ± 100° F [± 38° C]
Agency Approvals: ASME BPE, Cenelec (T4 Rated), CE Mark per EMC Directive 89/336/EEC; FM. CSA, and CRN pending.
N.I.S.T. Certified Test Lab Calibration: Standard

Flow Element

Materials of Construction: All welded 316L stainless steel
ST98 HP: 15 Ra electropolish (standard); 10 Ra electropolish (optional); Hastelloy C with 15 Ra electropolish (optional)
ST98 UP: 10 Ra or 15 Ra electropolish (standard)
Operating Pressure: 0 to 250 psig [17 bar(g)]. Designed pressure to 1000 psig [69 bar(g)], maximum operating pressure limited by customer specified process connection.
Operating Temperature:
Process temperature -40° to +350° F [-40° to +177° C]; integral electronics rated from 0° to 140° F [-18° to +60° C]
Optional: -100° to +500° F [-73° to +260° C]; integral electronics rated to 140° F [60° C]
Flow Element Process Connection:
ST98 HP: 1 inch [25 mm] sanitary flange
ST98 UP: 1 inch [25 mm] VCR connector

Flow Transmitter

Operating Temperature: 0° to 140° F [-18° to +60° C]
Input Power: 85 to 265 Vac, 22 to 30 Vdc; 7 watts maximum, 230 mA maximum.
Output Signal:
Current: 4 to 20 mA; 700 ohms maximum load.
Voltage: 0 to 10 Vdc, 0 to 5 Vdc or 1 to 5 Vdc; 100,000 ohms minimum load.
Communication Port: EIA-232 [RS-232] HART and Profibus Communications (optional): Two way.
Optional Display: 2 lines, 16 characters per line. Indicates flow rate and process temperature or totalized flow.
Remote Encloruse (if selected):
Standard: NEMA/CSA Type 4 carbon steel, Type 4X aluminum or stainless steel (meets IP66); nonincendive for Class 1, Division 2, Groups A, B, C, D; Suitable for Class II, Division 2, Groups F and G; Class III, Division 2.
Optional: NEMA/CSA Type 4X aluminum (meets IP66); Nonincendive for Class 1, Division 1, hazardous locations, Group B, C, D, E, F and G; and EEx d llC.