Honeywell Differential Pressure Transmitters
In 1983, Honeywell set the benchmark for differential pressure transmitters with the introduction of the first ‘Smart’ transmitters based on microprocessor technology. The advanced measurement principle, a 3-in-1 piezo-resistive sensor with built-in temperature compensation, has since been refined to achieve unparalleled levels of accuracy and stability. Following the success of the ST3000 series, this technology has been further enhanced in the new SmartLine pressure transmitters, designed for optimal performance in the process industry.
SmartLine Series Differential Pressure Transmitters
Honeywell’s SmartLine differential pressure transmitters provide solutions for a wide range of applications and are available in three series:
- STD800 SmartLine: High-performance differential pressure transmitter with advanced options, suitable for the most demanding processes.
- STD700 SmartLine: The standard choice for the process industry, offering an excellent balance between performance and cost.
- STD700 Basic SmartLine: A cost-effective solution, ideal for OEM projects and applications focused on budget efficiency.
Innovation that makes a difference
Honeywell SmartLine differential pressure transmitters combine advanced technology with exceptional reliability and are designed to tackle the most complex process challenges. With refined sensor technology, these transmitters deliver:
- High accuracy and stability
- Long lifespan with minimal calibration requirements
- Flexible applications across diverse industries
Why choose Honeywell SmartLine?
- Pioneer in microprocessor technology since 1983
- Equipped with a 3-in-1 piezo-resistive sensor for ultimate precision
- Available in various series to meet the needs of any process and budget
Optimize your processes with Honeywell Differential Pressure Transmitters
Contact us for expert advice on the best solution for your specific application and discover how Honeywell can help improve your operational efficiency.

STD800 SmartLine differential pressure transmitter
- STD810, measuring range 0-25 mbar
- STD820, measuring range 0-1000 mbar
- STD830, measuring range 0-7 bar
- STD870, measuring range 0-210 bar
Specifications for all STD800 models:
2-wire connection, 4-20mA + HART/DE/Foundation Fieldbus
Aluminium housing with polyester coating or 316 SS
Advanced graphic display
Standard accuracy 0.05%, optional up to 0.025%
Stability 0.01% per year, turndown ratio 100:1 (400:1 for STD820)
Recommended calibration period: every 4 years
Certifications: SIL2/3/MID/ATEX/IECEX/FM/CSA/Inmetro/CU-TR/Marine (DNV/ABS/BV/KR/LR)
Downloads
Spec sheet:
34-ST-03-82-STD800-Specsheet
Manuals:
34-ST-25-36-ST700-ST800-QuickStartGuide
34-ST-25-35-ST800-Manual
34-ST-25-37-ST700-ST800-HART-Safety-Manual
34-ST-25-39-ST800-Fieldbus-Manual
34-ST-25-38-ST800-HART-DE-Manual
Certificates:
ST700-800-CE-50080030
ST700-ST800-ATEX-FM-12ATEX0029X-EU
ST700-ST800-ATEX-Sira 12ATEX4234X (nA, ic)-EU
ST700-ST800-ATEX-Sira-12ATEX2233X (ia, FISCO)-EU
ST700-800-IECEx-SIRA-12.0100X_4 (ia, nA)
ST700-800-IECEX-FMG 12.0009X_1 (d)
ST800-SIL-Certificate
ST800-SIL-Report
STD700 SmartLine differential pressure transmitter
- STD720, measuring range 0-1000 mbar
- STD730, measuring range 0-7 bar
- STD770, measuring range 0-210 bar
Specifications for all STD700 models:
2-wire connection, 4-20mA + HART/DE/Foundation Fieldbus
Aluminium housing with polyester coating or 316 SS
View with 2 lines
Standard accuracy 0.05%
Stability 0.02% per year, turndown ratio 100:1
Recommended calibration period: every 2 years
Certifications: SIL2/3/ATEX/IECEX/FM/CSA/Inmetro/CU-TR/Marine (DNV/ABS/BV/KR/LR)
Downloads
Spec sheet:
34-ST-03-101-STD700-Specsheet
Manuals:
34-ST-25-36-ST700-ST800-QuickStartGuide
34-ST-25-44-ST700-Manual
34-ST-25-37-ST700-ST800-HART-Safety-Manual
34-ST-25-47-ST700-HART-DE-Manual
34-ST-25-48-ST700-Fieldbus-Manual
Certificates:
ST700-800-CE-50080030
ST700-ST800-ATEX-FM-12ATEX0029X-EU
ST700-ST800-ATEX-Sira 12ATEX4234X (nA, ic)-EU
ST700-ST800-ATEX-Sira-12ATEX2233X (ia, FISCO)-EU
ST700-800-IECEx-SIRA-12.0100X_4 (ia, nA)
ST700-800-IECEX-FMG 12.0009X_1 (d)
ST700-SIL-Certificate
ST700-SIL-Report
STD700 Basic differential pressure transmitter
- STD725, measuring range 0-1000 mbar
- STD735, measuring range 0-7 bar
- STD775, measuring range 0-210 bar
Specifications for all STD700 basic models:
2-wire connection, 4-20mA + HART 7
Aluminium housing with polyester coating or 316 SS
Display with 2 lines
Standard accuracy 0.065%
Stability 0.025% per year, turndown ratio 100:1
Recommended calibration period: every 2 years
Certifications: SIL2/3/ATEX/IECEX/FM/CSA/Inmetro/CU-TR
Downloads
Spec sheet:
34-ST-03-121-STD700-Basic-Specsheet
Manuals:
34-ST-25-57-ST700-Basic-QuickStartGuide
34-ST-25-44-ST700-Manual
34-ST-25-37-ST700-ST800-HART-Safety-Manual
34-ST-25-47-ST700-HART-DE-Manual
Certificates:
ST700-800-CE-50080030
ST700-ST800-ATEX-FM-12ATEX0029X-EU
ST700-ST800-ATEX-Sira 12ATEX4234X (nA, ic)-EU
ST700-ST800-ATEX-Sira-12ATEX2233X (ia, FISCO)-EU
ST700-800-IECEx-SIRA-12.0100X_4 (ia, nA)
ST700-800-IECEX-FMG 12.0009X_1 (d)
ST700-SIL-Certificate
ST700-SIL-Report