In 1983, Honeywell were the first to market ‘smart’ 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 and unprecedented accurate and stable. The successful ST3000 range, with the series 100 and 900, is succeeded by the SmartLine pressure transmitters. The transmitters with diaphragm seals are available in three series:

Series

STR800 SmartLine: High-Performance pressure transmitter, advanced options
STR700 SmartLine: The standard pressure transmitter for the process industry
STR700 Basic SmartLine: Economic pressure transmitter, OEM and projects

Each series has models for differential pressures, for among others level measurements, gauge pressure and absolute pressure.

Instrumentation

STR800 Pressure transmitters with remote diaphragm seals

• STR82D differential pressure, 0-1000 mbar
• STR83D differential pressure, 0-7 bar
• STR84G gauge pressure, 0-35 bar
• STR87G gauge pressure, 0-210 bar
• STR84A absolute pressure, 0-35 bar

Specifications for all STR800 models:
2-wire connection, 4-20mA + HART/DE/Foundation Fieldbus
Aluminium housing with polyester coating or 316 SS
Advanced graphic display
Standard accuracy 0.065%
Stability 0.01% per year, turndown ratio 100:1
Recommended calibration period: every 4 years
Certifications: SIL2/3/ATEX/IECEX/FM/CSA/Inmetro/CU-TR/Marine (DNV/ABS/BV/KR/LR)

Downloads
Spec sheet:
STR800-Specsheet

STR700 Pressure transmitters with remote diaphragm seals

• STR73D differential pressure, 0-7 bar
• STR74G gauge pressure, 0-35 bar

Specifications for all STR700 models:
2-wire connection, 4-20mA + HART/DE/Foundation Fieldbus
Aluminium housing with polyester coating or 316 SS
Display with 2 lines
Standard accuracy 0.075%
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:
STR700-Specsheet

STR700 Basic Pressure transmitters with remote diaphragm seals

• STR735D differential pressure, 0-7 bar
• STR745G gauge pressure, 0-35 bar

Specifications for all STR700 Basic models:
2-wire connection, 4-20mA + HART 7
Aluminium housing with polyester coating or 316 SS
Display with 2 lines
Standard accuracy 0.075%
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:
STR700-Specsheet