ST98B-CA Thermal Mass Flow Meter for Compressed Air

Thermal Mass Flow Meter Summary

The ST98B-CA BASIC insertion type FlexMASSter sets a new standard for thermal mass flow meter performance, ease of use and installed value for Compressed Air service. This field selectable insertion unit features an application-specific instrument package for fast ordering, simple installation and precision measurement.

The ST98B-CA BASIC features FCI’s popular ST98 Series innovative flow element design with leading-edge flow transmitter electronics and temperature compensation to ensure optimum performance in process temperatures that vary up to ± 100° F. It is available with all of the below listed standard features for a very attractive price and with quick delivery as soon as 5 business days ARO.

Applications
Improving compressor efficiency and saving energy
Identifying compressor load requirements

Specifications

Flow Range: 6 to 600 sfps  [1.83 to 183 nmps] in Compressed Air at
standard conditions 70° F [21.1° C] and 14.7 psia [1.01325 bar (a)].
Accuracy: (at calibrated conditions)  ± 1% reading + 0.5% full scale
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: ± 0.5% reading
Turndown Ratio: Factory set at 100:1
Temperature Compensation: ± 30° F [± -1° C] Temperature Range: 60° to 120° F  [16° to 49° C] Pressure Range: 35 to 150 psig  [2.4 to 10 bar(g)] Enclosure: Powder coated carbon steel rated for NEMA and CSA Type 4, water and dust tight
(meets IP66).
Agency Approvals:  FM, CSA, CENELEC, ATEX and CE Mark.
N.I.S.T. Certified Test Lab Calibration: Standard

Flow Element

Materials of Construction: All welded 316L stainless steel for all wetted surfaces.
Process Connection: 0.75 inch male NPT stainless steel compression fitting with stainless steel ferrule.
Insertion Length (Field Adjustable) ¹:
1 to 6 inches  [25 to 152 mm] 1 to 12 inches  [25 to 305 mm]br> Operating Temperature: Up to 200° F  [93° C] Operating Pressure: Up to 150 psig  [10 bar(g)]

Flow Transmitter

Operating Temperature: 0° to 140° F  [-18° to +60° C] Input Power (Field Selectable) ²: 85 to 265 Vac or 22 to 30 Vdc; 16 watts maximum.
Output Signal (Field Selectable):
Current: 4 to 20 mA source; 800 ohms maximum load (with field selectable low [3.6 Ma] or
high
[21 mA] instrument fault indication; per NAMUR guideline NE 431).
Voltage: 0 to 5 Vdc, 1 to 5 Vdc or 0 to 10 Vdc; 100,000 ohms minimum load.
Digital Communication Port: RS-232C
Optional Display: 2 lines, 16 characters per line.  Indicates flow rate and process temperature or totalized flow (field selectable).
Optional Remote Configuration:
Flow Element Enclosure: Powder coated aluminum rated for NEMA Type 4X and hazardous locations Groups B, C, D, E, F and G, CENELEC EEx d IIC.
Flow Transmitter Enclosure: Powder coated carbon steel rated for NEMA and CSA Type 4,
water and dust tight (equivalent to IP66).
Optional Interconnecting Cable: 25 ft. [7.6 m] PVC cable for remote configuration.
Optional Communicator/Programmer: FCI Model FC88 Hand-held plug-in interface.

Note 1: After installation, stainless steel ferrule will be permanently fixed at the installed length.
Note 2: Output signal is isolated from input power on Vac powered units only.

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