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Honeywell SmartLine ST700 Pressure Transmitter
Honeywell's ST700 pressure transmitters include absolute pressure transmitters, gauge pressure transmitters, flanged pressure transmitters and remote sealed transmitters to meet industry requirements for performance, stability, reliability and range. The innovative modular design and intuitive human machine interface (HMI) make this series suitable for a wide range of industrial process applications.
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Product description
Honeywell's ST700 pressure transmitters include absolute pressure transmitters, gauge pressure transmitters, flanged pressure transmitters and remote sealed transmitters to meet industry requirements for performance, stability, reliability and range. The innovative modular design and intuitive human machine interface (HMI) make this series suitable for a wide range of industrial process applications.
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Product Introduction
SmartLine ST700 transmitter has the following characteristics:
Stability of up to 0.02 percent per year for five years
• 100 millisecond response time
• Tuning ratio of up to 100:1
• Modular design with field replaceable devices
• Automatic pressure and temperature compensation
• Comprehensive onboard diagnostic capabilities
• Alphanumeric display function
• External Zero, Range, and Configuration Performance
• Integral double seal design based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0
Overpressure protection
• Complies with SIL 2/3
• General purpose or traditional terminal electrical connection
SmartLine ST700 transmitters feature self-diagnostics to help maintain long uptime, regulatory requirements, and high quality standards. In addition, its 100:1 adjustment ratio and modular design eliminate the need for users to equip multiple transmitters or electronic modules with different adjustment ratio ranges. This allows the user to redefine the range or replace the electronic module without having to purchase an additional transmitter.
Working principle
The SmartLine ST700 transmitter can replace any 4 to 20 mA transmitter on the market today. Other features of the system include:
• The "three-in-one" piezoresistive sensor, which combines a differential pressure sensor, a temperature sensor and a static pressure sensor, can output a complete, fully compensated output signal;
• High-performance microprocessor with integrated A/D converter for faster response time, higher accuracy and wider adjustable range;
• Offers a range of output communication options including 4 to 20 mA, HART, FF Fieldbus or DE protocols.
Solve what problems?
SmartLine ST700 transmitters help users improve product quality while maintaining greater operational and cost flexibility. In addition, the repeatable pressure measurement results provided by this series of transmitters have been recognized by the industry and can be used in a variety of hazardous environments under the premise of ensuring safety.
Product selection
| Product Category | Introduction | Product Model | Specifications |
| absolute pressure transmitter | ST700 is available in two models: tube type and double head type (STAXX) | STA722/STA725/STA72L/STA72S | 0至780 mmHga（0至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) | ||
| Differential pressure transmitter | ST700 differential pressure transmitters are ideal for critical process circuits and high-value applications such as trade metering handoffs, energy and material balances. | STD720/STD725 | -400 to 400 inches of water -1000 to 1000 mbar |
| STD730/STD735 | -100 to 100 psi,-7.0 to 7.0 bar | ||
| STD770/STD775 | -3000 to 3000 psi,-210 to 210 bar | ||
| Embedded pressure transmitter | This embedded pressure transmitter provides a pressure range of 0-1 to 0-100 psig and can be installed in a variety of hazardous locations. Its embedded mounting capability eliminates the possibility of clogging, while the plug-in design allows users to easily and quickly replace the transmitter. | Reference accuracy = 0.065% 100 millisecond response time Stability = ± 0.025% per year |
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| Double-head type gauge pressure transmitter | The double-head gauge pressure transmitter is suitable for typical applications involving reaction furnaces in the chemical industry, as well as level measuring equipment with process temperatures not higher than 257 °F /125°C. The in-line transmitter is directly connected to a 1/2 inch male NPT connector and can be installed in hazardous environments for accurate and repeatable pressure measurements. Typical applications include high pressure measurements in boilers, fuel supply facilities and high pressure reaction pots in the petrochemical and hydrocarbon extraction industries. |
STG740/STG745/STG74L/STG74S | 0-500 psi,0-35 bar |
| STG770/STG775/STG77L/STG77S | 0-3,000 psi,0-210 bar | ||
| STG78L/STG78S | 0-6,000 psi,0-420 bar | ||
| STG79L/STG79S | 0-10,000 psi,0-690 bar | ||
| Remote diaphragm seal transmitter | Honeywell offers the following ST700 remote diaphragm sealed transmitters: • flush flange seal • Insert diaphragm flange seal • Pie flange seal • Sanitary flange seals • Chemical T-shaped Taylor Flange • Threaded flanged process connection seal • Saddle flange seal • Calibration ring • Stainless steel armored capillary and stainless steel armored capillary with PVC sheath • 2 inch stainless steel fittings • Fully welded table body |
STR73D/STR735D | -100 to 100 psig(-7 to 7 bar),1 to 100 psig(0.07 to 7 bar) |
| STR74G/STR745G | -500 to 500 psig(-35 to 35 bar),5 to 500 psig(0.035 to 35 bar) |
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