Specifications, Instrument, Flow element – Fluid Components International ST75_ST75V User Manual
Page 2: Transmitter

FLUID COMPONENTS INTERNATIONAL LLC
ST75/ST75V MASS FLOW
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2
Doc. No. 06EN003368 Rev. C
Specifications
Media Compatibility:
Air, compressed air, nitrogen, oxygen, argon, CO2, ozone,
other inert gases, natural gas, and other hydrocarbon
gases, hydrogen.
Pipe/Line Size Compatibility: 1/4" to 2" [6 mm to 51 mm]
Instrument
ST75/ST75V Range:*
* actual range subject to gas type and specific conditions.
Accuracy:
ST75: ± 2% of reading, ± 0.5% of full scale
Optional: ± 1% of reading, ± 0.5% of full scale
ST75V: ± 1% of reading, ± 0.5% of full scale
Repeatability: ± 0.5% of reading
Temperature Compensation:
Standard: 40 to 100°F [4 to 38°C]
Optional: 0 to 250°F [-18 to 121°C]
Turndown Ratio: 10:1 to 100:1
Agency Approvals:
ATEX/IEC Ex: II 2 G Ex d IIC T6...T3
II 2 D Ex tD A21 IP67 T90°C...T121°C
FM, CSA:
Class I, II, III, Div. 1, Groups B-G
Class I, Div. 2, Groups A-D
CRN No.:
0F0303
Warranty: One year
Flow Element
Installation:
ST75: In-line “T”, NPT or tube
Material of Construction: All-welded 316 stainless steel
probe element with Hastelloy-C thermowells; 316 stainless
steel NPT and tube fittings
Maximum Operating Pressure:
ST75:
T-fitting [NPT female]: 240 psi [16.5 bar(g)]
Tube: 600 psi [41 barg]
ST75V: 240 psi [16.5 bar(g)]
Temperature: Operating: 0 to 250°F [-18 to 121°C]
Process Connection:
ST75: T-fitting [NPT female]: 1/4”, 1/2”, 3/4”, 1”, 1 1/2” or 2”
Tubing: 1/4”, 1/2” or 1”
ST75V: Female NPT, Male NPT, Flange
1/4”, 1/2”, 3/4”, 1”, 1 1/2” or 2”
Transmitter
Enclosure: NEMA 4X [IP67], aluminum, dual conduit ports
with either 1/2" Female NPT or M20x1.5 entries. Epoxy coated.
Output Signals:
(2) 4-20 mA user assignable to flow rate and/or temperature
(1) 0-1 kHz pulse for total flow
Communication Port: RS232C standard. Optional wireless IR
to PDA with digital display models
Input Power:
DC: 18 Vdc to 36 Vdc (6 watts max.)
AC: 85 Vac to 265 Vac (12 watts max.; CE Mark Approval for 100
Vac to 240 Vac)
Operating Temperature Range: 0 to 140°F [-18 to 60°C]
Digital Display: (Optional)
Two-line x 16 characters LCD. Displays measured value and
engineering units. Top line assigned to flow rate. Second line is
user assignable to temperature reading, flow totalizer or
alternating. Display can be rotated in 90° increments for
optimum viewing orientation.
NPT
Line
Size
¼” ½” ¾” 1” 1
½” 2”
Min.
SCFM 0.04 0.13 0.22 0.35 0.85 1.40
Min
[NCMH] [0.07] [0.22] [0.38] [0.59] [1.44] [2.38]
Max.
SCFM 17.34 50.64 88.88 139.95 539.31 559.27
Max.
[NCMH] [29.47] [86.04] [151.00] [237.78] [576.48] [950.20]
Tubing Line Size
¼”
½”
1”
Min. SCFM
0.01
0.05
0.25
Min [NCMH]
[0.01]
[0.09]
[0.42]
Max.
SCFM
3.02 21.15 99.08
Max. [NCMH]
[5.14]
[35.94]
[168.33]