Honeywell STA922 Temperature Transmitter

Honeywell STA922 Temperature Transmitter — Smart Temperature Measurement with HART for Saudi Process Control

The Honeywell STA922 is a smart temperature transmitter compatible with RTDs (PT100) and thermocouples (J, K, S, B). Designed for the temperature measurement challenges of Saudi Arabia's oil & gas, petrochemical, and power generation sectors, the STA922 delivers accurate, reliable temperature data for process control and safety instrumented systems.

Temperature measurement in Saudi Arabia faces unique challenges: ambient temperatures regularly exceed 50°C in summer, process temperatures range from cryogenic LNG (-160°C) in Yanbu to fired heater tubes exceeding 800°C in Jubail refineries. The STA922's wide input range and environmental compensation handle these extremes.

Key Features

Universal Input: PT100, thermocouple J/K/S/B, millivolt, and ohm inputs — one transmitter handles all temperature sensor types in a plant, reducing spare parts inventory.

HART 7 Protocol: Full HART 7 digital communications with Field Device Manager (FDM) compatibility — remote configuration, range adjustment, and diagnostics without field access.

SIL 2 Capable: Designed for use in Safety Instrumented Systems (SIS) — suitable for Saudi Aramco SIS applications where temperature trips protect critical process equipment.

Input Isolation: Galvanic isolation between input and output circuits — prevents ground loop issues common in Saudi plant instrumentation.

Applications in Saudi Arabia

Aramco Refinery Main Fractionator: STA922 measures tray temperatures throughout the crude distillation column — temperature control determines product quality and yield across naphtha, jet, diesel, and residuum cuts.

LNG Facilities (Yanbu): Cryogenic temperature measurement at -160°C on LNG import/export terminals — STA922's extended low-temperature range handles LNG service without special calibration.

Technical Specifications

Frequently Asked Questions

Q1: What is the Honeywell STA922 price in Saudi Arabia? Contact RAZZ at sales@razz.sa for pricing. We supply both head-mount and DIN-rail mounted versions for different installation requirements.

Q2: What PT100 sensor is compatible with STA922? STA922 accepts 2, 3, and 4-wire PT100 inputs with automatic lead-wire compensation — eliminating measurement error from lead wire resistance in long sensor runs common in Saudi plant configurations.