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The Honeywell STD720-E1AN4CS is a high-performance, high-stability pressure/differential pressure transmitter designed for demanding applications in industrial process control. This model belongs to the Honeywell SmartLine® series of products and is widely used in industries such as oil, gas, chemical, power and water treatment due to its excellent measurement accuracy, reliable long-term stability and strong environmental adaptability.
**Technical Parameters:**
* **Output signal:** 4-20 mA DC, superimposed with HART® protocol digital communication, supports remote configuration, diagnosis and monitoring.
**Measurement Type:** Differential pressure
* **Accuracy:** Typical values can reach ±0.04% range, ensuring high-precision measurements for delicate process control needs.
**Stability:** Excellent long-term stability, typical of ±0.1% URL/10 years, effectively reducing maintenance and calibration frequency.
* **Measurement range:** The range ratio can reach 10:1, and users can flexibly adjust it according to actual application needs.
**Process Connections:** Standard configuration with 1/2" NPT female thread for easy integration with process piping.
**Diaphragm Materials:** Various options for isolation diaphragm materials, such as Hastelloy C-276, are available for corrosive media.
* **Electrical Connections:** Meet explosion-proof and protection requirements through 1/2-inch NPT conduit interface.
* **Explosion and Protection Ratings:** They typically have explosion-proof certifications (e.g., ATEX, IECEx) and IP67 or higher ratings for hazardous areas, ensuring safe and reliable operation in harsh environments.
* **Operating Temperature:** Wide ambient temperature range, process media temperature range depends on the selected priming fluid and diaphragm material.
**Reference Conditions:** Comply with relevant functional safety standards under standard reference conditions, such as when evaluating SIL 2.
**Product Description:**
The STD720-E1AN4CS transmitter uses proven capacitive sensing technology to convert small differential voltage changes into highly linear electrical signals. Its core design focuses on ruggedness, and the sensor assembly provides excellent overvoltage protection and resistance to shock and vibration. The product is compact and lightweight, making it easy to install.
The distinctive feature of this transmitter is its intelligent functions. The HART communication protocol allows users to remotely parameterize, adjust ranges, diagnose faults, and access real-time data to field instruments in the control room or using a handheld
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