SmartLine® ST700 Flange Mount Pressure Transmitters may be installed directly onto a tank flange and are offered with a variety of tank connections.
The ST700 Flange Mount Pressure Transmitters are ideal for critical applications such as natural gas custody transfer and energy and material balances, where accuracy and stability are of utmost importance. Four ranges are available:
| STF724/ STF725 | -400 to 400 in H2O | -1000 to 1000 mbar |
| STF732/ STF735 | -100 to 100 psi | -7.0 to 7.0 bar |
| STF72F | -400 to 400 in H2O | -1000 to 1000 mbar |
| STF73F | -100 to 100 psi | -7.0 to 7.0 bar |
| Overview | |
|---|---|
| Models | STF724 / STF725 / STF732 / STF735 / STF72F / STF73F |
| Environmental Conditions | |
| Maximum Allowable Working Pressure (MAWP) | ANSI Class 150: up to 285 psi (19.6 bar) ANSI Class 300: up to 740 psi (51 bar) DN PN40: up to 580 psi (40 bar) (varies by material and temp) |
| Ambient Temperature Limits | -40 to +85 deg C (Ambient); -55 to +120 deg C (Storage) |
| Relative Humidity | 0 to 100% RH |
| Measurement Type | Flange Mounted Liquid Level |
| Rangeability | Up to 100:1 (model dependent) |
| Stability | Up to 0.02% of URL per year for 10 years |
| I/O Capabilities | |
| Process Connection Type | 1/4 in NPT, 1/2 in NPT (with Adapter), DIN, ANSI/DIN flanges (2, 3, 4 in Class 150/300, DN50/80/100 PN40) |
| Marine Certification | ABS, BV, DNV, KR, LR |
| Response Time | As fast as 100 ms |
| Configuration | External Zero, Span, & Configuration Capability; Two or Three-Button Local Configuration |
| Processing & Performance Metrics | |
| Maximum Turndown Ratio | Up to 100:1 (model dependent) |
| Minimum Span | STF724/STF72F: 4 inH2O (10 mbar) STF732/STF73F: 1 psi (0.07 bar) |
| Accuracy | Up to 0.05% of span (standard), 0.04% (optional) |
| Communication & Protocols | |
| Output/Communications | 4 to 20 mA, Honeywell DE, HART (v7.0) |
| Functional & Control Features | |
| Sensor Technology | Piezoresistive sensor with static pressure & temperature compensation |
| Diagnostics | Comprehensive On-board Diagnostics, Critical/Non-critical, SIL 2/3 Certified |
| Mechanical & Physical Properties | |
| Wetted Materials | 316L Stainless Steel, Hastelloy C-276, Monel 400 (model dependent) |
| Standards & Certifications | |
| Safety Approvals | SIL 2/3 certified, Dual Seal design, NAMUR NE-43 compliance, World class overpressure protection |
| Approvals | FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO, Marine (ABS, BV, DNV, KR, LR), IEC 61508 SIL 2/3 |
| Technical Specifications | |
| Display Options | Modular LCD (Alphanumeric or Advanced Graphics), Multiple Screens, Configurable Units |
| Supply Voltage | 10.8 to 42.4 VDC (HART), 15 to 49.3 VDC (DE), 9 to 32 VDC (FF) |
| Pressure Range | LRL: -400 inH2O/-100 psi Min Span: 4 inH2O/1 psi STF724/STF72F: 400 inH2O (1000 mbar) STF732/STF73F: 100 psi (7.0 bar) |
| Fill Fluids | Silicone Oil 200, CTFE, NEOBEE M-20, Silicone Oil 704 |
| Wiring | Up to 16 AWG (1.5 mm diameter) |
| Models | STF724/STF725/STF732/STF735/STF72F/STF73F |
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