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The ST98HP High Purity Mass flow meters are ideally suited for the pharmaceutical, biotech, food and 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 senses at the process fluid temperature. As flow passes the element a resistance differential is produced proportional to the mass flow rate.
Features
  • No moving parts
  • True Mass flow output
  • 316L stainless steel with all welded wetted surfaces
  • 15 Ra electropolish for ST98 HP High Purity
  • Integral electronics configuration
  • Gas calibration
  • RS232 communication port
  • Field scalable 4-20 mA output
  • Factory calibrated and certified to N.I.S.T. standards
  • Optional LCD display indicating flow rate and process temperature and/or totalized flow
  • Remote electronics configuration
  • HART or PROFIBUS field communications protocol
  • Calibration in hydrogen, helium, argon, etc.
  • Oxygen cleaning for wetted surfaces

Specifications

Accuracy

  • Flow: ± 1 % of Reading, ± 0.5 % of Full Scale
  • Temperature: ± 1° C (± 2° F), for Display Only, Flow Rate Must be greater than 5 AFPS (1.5 AMPS)

Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable

Applications

  • Biotechnology
  • CIP & SIP Flow & Temperature Monitoring
  • Clean Processes
  • Condenser / Evaporator Flow Control
  • Food & Beverage
  • High Purity Gas Monitoring
  • Pharmaceutical
  • Pill Coater Air Flow Monitoring
  • Process Flow Measurement & Monitoring
  • Scrubber Gas Discharge Monitoring
  • Semiconductor Industry

Approvals & Certifications

  • ISO 9001
  • AS 9100
  • ATEX: Zone 1, Zone 21, II 2 G Ex db IIC T6 to T1 Gb, II 2 D Ex Tb IIIC T85° to T300° C Db, IP66/IP67, Ta = -40° to 65° C
  • CE
  • CPA
  • CRN
  • CSA: Non-Incendive Class I, Div. 2, Groups A, B, C, D, T4 Ta = 60° C Indoor Hazardous (Classified) Locations
  • Ex
  • FM, FMc: Class I, Div. 1, Groups B, C, D, T4 Ta = 60° C, Class II/III, Div. 1, Groups E, F, G, T4 Ta = 60° C, Typical 4X/IP66, Class I, Div. 2, Grade A, B, C, D, T4 Ta = 60° C
  • GOST/RTN
  • IECEX: Zone 1, Zone 21, II 2 G Ex db IIC T6 to T1 Gb, II 2 D Ex Tb IIIC T85° to T300° C Db, IP66/IP67, Ta = -40° to 65° C
  • NEPSI
  • PED

Cable Length

  • 10 to 50 feet (3 to 15 metres)

Cable Material

  • PVC Jacket

Communication

  • HART
  • PROFIBUS-DP, Profile 3
  • RS-232C

Display

  • 2 Line x 16-Characters Per Line, Indicating Flow Rate & Process and/or Totalized Flow

Enclosure, Body Material

  • Aluminum
  • Carbon Steel
  • Stainless Steel

Environmental Protection

  • IP66
  • NEMA 4
  • NEMA 4X
  • Non-Incendive: Class 1, Div. 2, Groups A, B, C, D, Suitable for Class II, Div. 2, Groups F & G, Class III, Div. 2, Class 1, Div. 1, Hazardous Locations, Groups B, C, D, E, F & G, & EEx d LlC

Flow Rate

  • Air at 21.1° C (70° F) & psi: 14.7 (kPa: 101, bar: 1.013): 2.0 to 3,183 scfm (3.4 to 5409 NCMH)

Input Power

  • 22-30 Vdc
  • 230 mA - Max.
  • 7 W, Max.
  • 85-265 Vac

Length

  • Inline Flow Tube: 0.75” to 4.0” (19 to 102 mm) with Butt Weld Preparation or Sanitary Flange End Connections

Media

  • Air: Compressed Air, Nitrogen, Oxygen, Argon, Carbon Dioxide & Ozone
  • Inert Gases, Natural Gas, Other Hydrocarbon Gases & Hydrogen

Mounting

  • Integral Mounting
  • Remote Mounting

Mounting Position

  • Horizontal
  • Vertical

NACE & NIST

  • NIST

Operating Pressure

  • psig: 0 to 1,000 (kPa: 0 to 6,900, bar: 0 to 69) - Max.
  • psig: 0 to 250 (kPa: 0 to 1,724, bar: 0 to 17.24)

Operating Temperature

  • Transmitter & Integral Electronics: -18° to 60° C (0° to 140° F)

Output

  • Dual 4-20 mA Analog Output

Process Temperature

  • -40° to 177° C (-40° to 350° F)

Repeatability

  • ± 0.5 % of Reading

Sensor, Probe Type

  • Platinum RTDs (Precision Resistance Temperature Detectors)

Temperature Effect

  • Temperature Compensation: ± 1° C (± 30° F) Standard
  • Temperature Compensation: ± 38° C (± 100° F) Optional

Tri-Clamp Connection

  • 1” Sanitary Clamp
  • 1-1/2” Sanitary Clamp
  • 2” Sanitary Clamp
  • 2-1/2” Sanitary Clamp
  • 3” Sanitary Clamp
  • 3/4” Sanitary Clamp
  • 4” Sanitary Clamp

Turndown

  • Within Calibrated Flow Range (Factory Set & Field Adjustable): 10: 1 to 100: 1

Welded Connection

  • 1” Butt Weld End
  • 1-1/2” Butt Weld End
  • 2” Butt Weld End
  • 2-1/2” Butt Weld End
  • 3” Butt Weld End
  • 3/4” Butt Weld End
  • 4” Butt Weld End

Wetted Materials

  • All-Welded: 316L Stainless Steel with 15 Ra Electropolish
  • Hastelloy C with 15 Ra Electropolish

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