Overview
The STF724 is part of the SmartLine® family of pressure transmitters, although it is important to note that this specific model is no longer manufactured by STMicroelectronics. The SmartLine family is designed for monitoring, control, and data acquisition in various industrial applications, featuring high-performance piezoresistive sensor technology. These transmitters are suitable for direct mounting onto tank flanges and offer various tank connections, including flush and extended diaphragm configurations.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Upper Range Limit (URL) | 400 | in H2O (1000 mbar) |
| Lower Range Limit (LRL) | -400 | in H2O (-1000 mbar) |
| Minimum Span | 4 | in H2O (10.0 mbar) |
| Turndown Ratio | 100:1 | |
| Stability | 0.02% of URL per year for 10 years | |
| Reference Accuracy | 0.05% of span (standard), 0.04% of span (optional) | |
| Ambient Temperature Range | -40 to 85°C (-40 to 185°F) | |
| Process Interface Temperature | -40 to 175°C (-40 to 350°F) | |
| Supply Voltage | 10.8 to 42.4 Vdc | |
| Load Resistance | 0 to 1440 ohms | |
| Communications/Output Options | 4-20mA, Honeywell Digitally Enhanced (DE), HART® (version 7.0) |
Key Features
- High accuracy and stability over a wide range of pressure applications, with accuracies up to 0.05% of span (standard) and 0.04% of span (optional).
- Automatic static pressure and temperature compensation.
- Rangeability up to 100:1.
- Response times as fast as 100ms.
- Alphanumeric display capabilities and external zero, span, and configuration capability.
- Polarity insensitive electrical connections.
- Comprehensive on-board diagnostic capabilities.
- Integral Dual Seal design for highest safety based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0.
- World-class overpressure protection and full compliance to SIL 2/3 requirements.
- Modular design characteristics and availability with an additional 4-year warranty).
Applications
The STF724 pressure transmitter is designed for various industrial applications, including:
- Monitoring and control of pressure levels in tanks and vessels).
- Data acquisition in process industries such as oil and gas, chemical processing, and power generation).
- Use in demanding environments requiring high accuracy and stability, such as in the SmartLine family's compliance with Experion® PKS).
Q & A
- What is the STF724 pressure transmitter?
The STF724 is a flange-mounted pressure transmitter part of the SmartLine® family, designed for monitoring, control, and data acquisition in industrial applications.
- Is the STF724 still manufactured by STMicroelectronics?
No, the STF724 is no longer manufactured by STMicroelectronics.
- What are the key specifications of the STF724?
The STF724 has an upper range limit of 400 in H2O (1000 mbar), a lower range limit of -400 in H2O (-1000 mbar), and a minimum span of 4 in H2O (10.0 mbar). It also features a turndown ratio of 100:1 and stability of 0.02% of URL per year for 10 years).
- What communication protocols does the STF724 support?
The STF724 supports 4-20mA, Honeywell Digitally Enhanced (DE), and HART® (version 7.0) communication protocols).
- What are the temperature and pressure limits for the STF724?
The STF724 operates within an ambient temperature range of -40 to 85°C (-40 to 185°F) and a process interface temperature range of -40 to 175°C (-40 to 350°F)).
- Does the STF724 have any safety certifications?
Yes, the STF724 features an Integral Dual Seal design for highest safety based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0, and it is fully compliant with SIL 2/3 requirements).
- What is the response time of the STF724?
The response time of the STF724 can be as fast as 100ms).
- Can the STF724 be used in high-vibration environments?
Yes, the STF724 is designed to handle high-vibration environments with less than +/- 0.1% of URL effect without damping).
- What are the diagnostic capabilities of the STF724?
The STF724 has comprehensive on-board diagnostic capabilities, and diagnostics are reported as either critical or non-critical and are readable via the DD/DTM tools or other compatible software).
- Is the STF724 compatible with various process connections?
Yes, the STF724 is available with various process connections, including 1/4-inch NPT, 1/2-inch NPT with adapter, and DIN standard options, as well as different flange sizes and configurations).
