Fluid Components International LLC
ST75/ST75V Mass Flow Meter
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2
06EN003368 Rev. G
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/IECEx: II 2 G Ex db IIC T6...T1 Gb
II 2 D Ex tb IIIC T85°C...T300°C Db; IP66/IP67
Ta = -40°C to +65°C
FM, FMc:
Class I, Div 1, Groups B, C, D
Class I, Div 2, Groups A, B, C, D
Class II/III Div 1, Groups E, F, G
Type 4X, IP66
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 bar(g)]
ST75V: 600 psi [41 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) 0-500 Hz pulse for total flow
Communication Port:
RS232C standard.
Input Power:
DC: 18 VDC to 36 VDC (6 watts max.)
AC: 90 VAC to 264 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.
2"
1"
1 ½"
¾"
½"
¼"
NPT Line Size
0.85
0.22
0.35
0.13
0.04
Min. SCFM
1.40
[2.38]
[1.44]
[0.59]
[0.38]
[0.22]
[0.07]
Min [NCMH]
559.27
539.31
139.95
88.88
50.64
17.34
Max. SCFM
[576.48]
[950.20]
[237.78]
[151.00]
[86.04]
[29.47]
Max. [NCMH]
1"
½"
¼"
Tubing Line Size
0.25
0.05
0.01
Min. SCFM
[0.42]
[0.09]
[0.01]
Min [NCMH]
99.08
21.15
3.02
Max. SCFM
Max. [NCMH]
[5.14]
[35.94] [168.33]
