Honeywell STD700 SmartLine differential pressure transmitter, as a common member of the Honeywell SmartLine transmitter series, is a high-performance differential pressure transmitter that uses sensors. The Honeywell STD700 SmartLine differential pressure transmitter mainly combines differential pressure with static pressure and temperature compensation on the sensor chip. It provides extremely high measurement stability over a wide range of static pressures and temperatures. SmartLine has been tested to meet the requirements for easy pressure measurement applications.

The Honeywell SmartLine STD700 differential pressure transmitter packs a serious punch when it comes to precision and reliability. Here are its standout features:

Accuracy up to 0.05% of span – ideal for critical process control.

Stability of 0.02% URL per year for 10 years – meaning fewer recalibrations and long-term confidence.

Rangeability up to 100:1 – flexible enough for a wide range of applications.

Fast response time – as quick as 100 milliseconds.

Automatic static pressure and temperature compensation – ensures consistent performance under changing conditions.

Modular design – allows for easy field upgrades and maintenance.

Alphanumeric LCD display – configurable and rotatable, with support for multiple engineering units.

On-board diagnostics – helps with predictive maintenance and troubleshooting.

SIL 2/3 compliance – meets rigorous safety standards.

Multiple communication protocols – including HART 7.0, DE, and FOUNDATION Fieldbus.

1. Product Specifications: 
 

2. Product Features: 
1. High accuracy of the calibrated range, good stability, good commercial range, automatic temperature compensation, range ratio of 100:1, fast response time; 
2. Easy to use and intuitive display functions, external zero point, range, and configuration functions, self-diagnosis function; 
3. Based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0 integrated dual-seal design, standard configuration meets SIL2/3 requirements.

3. Selection Guide:

Frequently Asked Questions – Honeywell STD700

1. What is the primary function of the STD700? 

It measures differential pressure in industrial processes, supporting applications like flow measurement, hydrostatic tank gauging, and energy balances.

2. How accurate is the STD700? 

It offers up to ±0.05% of span accuracy, making it suitable for high-precision control loops.

3. What communication protocols are supported? 

The transmitter supports HART 7.0, DE (Digitally Enhanced), and FOUNDATION Fieldbus protocols.

4. Can it be used in safety-critical applications? 

Yes, it is SIL 2/3 compliant, making it suitable for safety instrumented systems.

5. What is the typical response time? 

As fast as 100 milliseconds, depending on configuration.

6. Is it suitable for harsh environments? 

Absolutely. It features IP66/67 and NEMA 4X enclosures and offers certifications like ATEX, IECEx, FM, and CSA for hazardous areas.

7. How does it handle temperature and pressure variations? 

It includes automatic static pressure and temperature compensation to maintain accuracy under changing conditions.

8. Can the display be customized? 

Yes, the LCD display is rotatable and supports multiple engineering units and diagnostic readouts.

9. What’s the long-term stability like? 

It maintains ±0.02% URL/year stability for up to 10 years, reducing recalibration needs.

10. How is it integrated into control systems? 

It integrates seamlessly with Honeywell’s Experion® PKS and other DCS platforms.