In 1983, Honeywell were the first to market the ‘smart’ differential pressure transmitters using microprocessor technology. Over the years the measuring principle, a 3-in-1 piezoresistive sensor with internal temperature compensation, has been developed to perfection. This principle is unprecedented accurate and stable. The successful ST3000 range, with the series 100 and 900, is succeeded by the SmartLine pressure transmitters. The transmitters for differential pressure are available in three series:

Series

STD800 SmartLine: High-Performance pressure transmitter, advanced options
STD700 SmartLine: The standard pressure transmitter for the process industry
STD700 Basic SmartLine: Economic pressure transmitter, OEM and projects

Instrumentation

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:
STD800-specsheet

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:
STD720-Specsheet

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:
STD700 LE-Specsheet