Moore Industries STZ Functional Safety Dual Input Smart HART Temperature Transmitter
Overview
The Moore Industries STZ Functional Safety Dual Input Smart HART Temperature Transmitter is part of the Moore Industries FS Functional Safety Series, engineered for Safety Instrumented Systems (SIS) that demand certified reliability and exceptional measurement accuracy. exida certified to IEC 61508 for systematic integrity up to SIL 3 and random integrity up to SIL 2, the STZ accepts single or dual sensor inputs from 14 RTD types, 9 thermocouple types, resistance and potentiometer devices, and direct millivolt sources, located in both hazardous and non-hazardous areas.
Seven Star LLC supplies the Moore Industries STZ as an authorized partner to safety-critical process facilities across Oman and the GCC, including refineries, petrochemical plants, and reactors where temperature is a critical safety variable. Every transmitter shipped through Seven Star LLC carries genuine Moore Industries certification, full manufacturer warranty, and access to FMEDA safety data for SIS engineering documentation in Muscat, Sohar, and Salalah.
Measurement and Operating Principle
The STZ delivers 20-bit input resolution for exceptional digital accuracy of ±0.1°C with all Pt RTDs, improving to ±0.05°C for Pt1000 RTDs, with input-to-output analog accuracy of up to ±0.014°C achievable through Moore Industries’ sensor-matching calibration process. This isolated, linear 4-20mA output is proportional to the input and ready for direct interface with HART or non-HART based safety systems, DCS, PLC, and SCADA platforms.
Dual sensor input capability provides expanded measurement protection: Backup and Fail-Over Protection designates a primary and secondary sensor with automatic switchover on primary failure, Average and Differential Measurement calculates combined or differential readings between two inputs, and High-Select/Low-Select continuously monitors both inputs to output the highest or lowest value. Dynamic Variable Mapping lets any input or calculated result be assigned to HART’s PV, SV, TV, or QV variables for flexible host system integration.
Engineering Design of the Moore Industries STZ
Patented Total Sensor Diagnostics continuously monitors sensor health, driving the output upscale or downscale on sensor failure per NAMUR NE-43 while providing a HART digital error message identifying the sensor type and failure location. Sensor Drift and Corrosion Detection alerts operators when sensor resistance drifts outside preset limits, an early warning of impending sensor failure that helps prevent unplanned shutdowns in critical reactor and process temperature loops.
The STZ is available in multiple housing configurations to match installation requirements: the compact HPP hockey-puck design for connection heads, the DIN-rail mounted DIN housing (available with the -AIS option providing a built-in intrinsically safe barrier for direct hazardous-area sensor connection without external barriers), and explosion-proof HP, BH, and SB enclosures rated NEMA 4X/IP66 with on-site display. Approvals include FM, CSA, ATEX, and IECEx across the various housing options, covering Class I Division 1/2 and Zone 0/1/2 hazardous locations.
Key Features
- exida certified to IEC 61508, SIL 3 systematic / SIL 2 random integrity
- Dual sensor input with backup/failover, average/differential, and high/low select
- Digital accuracy ±0.1°C (Pt RTD) to ±0.05°C (Pt1000), analog accuracy to ±0.014°C
- Patented Total Sensor Diagnostics with drift and corrosion detection
- HART 7 compliant with dynamic variable mapping and Read Only security mode
- -AIS option provides built-in IS barrier for direct hazardous-area sensor wiring
- Multiple housing options: HPP, DIN, HP, BH, SB (explosion-proof, NEMA 4X/IP66)
- Accepts 14 RTD types, 9 thermocouple types, resistance, potentiometer, and mV inputs
Industrial Applications
The STZ is deployed across Oman’s refining, petrochemical, and reactor process areas where temperature measurement directly supports Safety Instrumented Functions, particularly in exothermic reactor processes prone to thermal runaway where sensor backup and failover protection provides an added layer of protection. Its FMEDA-certified safety data supports SIL verification calculations required for SIS documentation across Sohar and Muscat industrial safety programs.
As an authorized Moore Industries partner, Seven Star LLC ensures STZ transmitters deployed across Oman and the GCC are genuine, correctly configured for the target SIL requirement and hazardous-area classification, and backed by full manufacturer warranty and technical support. This authorized-partner relationship gives safety engineers confidence in both instrument certification and long-term functional safety performance.
Technical Specifications
| Model | Moore Industries STZ (HPP / DIN / HP / BH / SB housings) |
|---|---|
| Safety Certification | exida IEC 61508, SIL 3 systematic / SIL 2 random |
| Input Types | 14 RTD types, 9 T/C types, resistance, potentiometer, mV |
| Digital Accuracy | ±0.1°C (Pt RTD) / ±0.05°C (Pt1000) |
| Analog Accuracy | Up to ±0.014°C (sensor-matched) |
| Output | 4-20mA, isolated, HART 7 compliant |
| Resolution | Input 20-bit / Output 16-bit |
| Power Supply | 12-42VDC (standard) / 12-30VDC (I.S.) |
| Hazardous Area Approvals | FM, CSA, ATEX, IECEx (housing dependent) |
Why Choose Seven Star LLC for Moore Industries Functional Safety Temperature Transmitters
A dual-input SIS temperature transmitter earns its safety rating only when its FMEDA-documented failure rates and SIL capability genuinely match your safety instrumented function’s target SIL level, and the redundancy configuration (1oo2, dual-diverse, or simplex) has to be selected deliberately rather than defaulted. Seven Star LLC works with your process safety engineers to confirm the correct STZ configuration and FMEDA data package against your specific SIF requirements before order confirmation, drawing on our authorized Moore Industries partnership across Oman and the wider GCC. We also support refineries and petrochemical facilities in Sohar and Salalah with proof-testing interval planning and safety-loop commissioning documentation, so safety-critical temperature measurement points remain verifiably compliant between full system audits.
Contact Seven Star LLC today to order the genuine Moore Industries STZ Functional Safety Temperature Transmitter with full manufacturer warranty, FMEDA safety documentation, and expert technical support for SIS temperature measurement projects across Oman and the GCC.
Related Products
Moore Industries is a trusted global manufacturer of signal conditioning, process control, and automation equipment, known for its precision and reliability in industrial applications. Founded in 1968, the company provides high-performance solutions that convert, isolate, and protect critical process signals in harsh environments.
Its extensive product range includes signal transmitters, isolators, alarms, I/O systems, and temperature sensors used in industries such as oil & gas, chemical, energy, and manufacturing. Moore Industries products are designed to ensure process accuracy, system safety, and long-term operational stability.
Seven Star LLC supplies genuine Moore Industries instruments and signal control solutions across the Middle East, offering dependable products backed by global engineering expertise and technical support.
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