SmartLine® ST700 Absolute Pressure Transmitters are targeted at applications requiring robust performance in vacuum applications.This includes low-pressure measurement in vacuum distillation columns.
The ST700 Absolute Pressure Transmitters are available in two variants – In-line and Dual Head – in the following ranges:
| STA722/STA725/STA72L/STA72S | 0 to 780 mmHga | (0 to 1,040 mbara) |
| STA740/STA745/STA74L/STA74S | 0 to 500 psia | (0 to 35 bara) |
| STA77L/STA77S | 0 to 3000 psia | (0 to 210 bara) |
SmartLine transmitters deliver superior reliability and an unmatched user experience. Discover the value of SmartLine for all your projects. Know more:
| Overview | |
|---|---|
| Models | STA722 / STA72L / STA740 / STA74L |
| Environmental Conditions | |
| Maximum Allowable Working Pressure (MAWP) | STA722/72L: 780 mmHgA (1,040 mbarA) STA740/74L: 500 psia (35 barA) |
| Ambient Temperature Limits | -40 to +85 deg C (Operation) -55 to +120 deg C (Storage) LCD: -20 to +70 deg C (Operation) |
| Relative Humidity | 0 to 100% RH |
| Measurement Type | Absolute Pressure (psia, mmHgA, barA) |
| Rangeability | Up to 100:1 |
| Stability | Up to 0.02% of URL per year for 10 years |
| I/O Capabilities | |
| Process Connection Type | 1/2 in NPT (Female), DIN 19213, 1/2 in NPT (Male), 9/16 Aminco, G1/2-B Male Thread |
| Response Time | As fast as 100 ms millisecond |
| Configuration | External Zero, Span, & Configuration Capability; Two or Three-Button Local Configuration |
| Processing & Performance Metrics | |
| Maximum Turndown Ratio | STA722/72L: 15.6:1 STA740/74L: 100:1 |
| Accuracy | Up to 0.055% of span (standard), 0.04% (optional) Up to 0.065% of span |
| Communication & Protocols | |
| Output/Communications | 4 to 20 mA, HART (v7.0), Honeywell Digitally Enhanced (DE), Foundation Fieldbus (optional) |
| Mechanical & Physical Properties | |
| Wetted Materials | Diaphragm: 316L Stainless Steel, Hastelloy C-276, Monel 400, Tantalum |
| 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, Multi-Language |
| Supply Voltage | DE: 15 to 49.3 VDC FF: 9 to 32 VDC HART: 10.8 to 42.4 VDC (IS limited to 30 VDC) |
| Pressure Range | STA722/72L: 780 mmHgA (0-780 mmHgA, min span 50 mmHgA) STA740/74L: 500 psia (0-500 psia, min span 5 psia) |
| Functional & Control Features | |
| Diagnostics | Comprehensive On-board Diagnostics, Critical/Non-Critical, SIL 2/3 Certified |
| Wiring / Mechanical & Physical Properties | |
| Wiring | Up to 16 AWG (1.5 mm diameter) |
| Models | STA722/STA725/STA72L/STA72S |
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