STG 74S

STG 74S

What This Data Means — For Quick Client Selection

  • Select for safety loops (SIL2/3) → ideal where shutdown logic & trip reliability matter.
  • Choose for steam / reactor lines due to stability 0.02% URL/year & 100 ms response.
  • HART + diagnostic alarms reduce manual calibration & downtime in OEM/ETP plants.
  • Wide range spans (0.04–400 bar) make STG74S deployable from low DP lines to high-pressure gas/oil manifolds.
  • Harsh media? opt Hastelloy wetted parts for corrosive chemical duty.
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Description

Honeywell STG74S is a SIL-rated, high-precision smart pressure transmitter engineered for oil & gas, chemical, pharma and critical utility loops. With ±0.065% accuracy, advanced diagnostics, dual-compartment housing and global safety approvals, it ensures stable measurement in steam headers, reactors, custody transfer lines and ESD-linked shutdown loops.

STG74S — Key Technical Data & Selection Parameters

Parameter Specification / Details
Measurement Principle Piezoresistive smart sensor with digital compensation
Accuracy ±0.065% of span (premium industrial grade)
Stability 0.02% URL / year (up to 10 years)
Pressure Ranges 0–0.04 bar to 0–400 bar (various spans)
Output 4–20 mA + HART / optional Foundation Fieldbus
Display LCD backlit, configurable, diagnostics icons
Overpressure Limit Up to 2× URL (model dependent)
Process Connections ½” NPT, flange, sanitary diaphragm (optional)
Ingress Protection IP66 / IP67
Hazardous Approvals ATEX / IECEx / FM / SIL2/3
Response Time ≤ 100 ms (configurable damping)
Operating Temp –40 °C … +85 °C
Materials SS316L, Hastelloy, Monel (wetted parts selection)
Diagnostics Plugged impulse detection, sensor drift alarm, loop integrity

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