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Brand: Moore Industries
Moore Industries STZ Functional Safety Dual Input Smart HART Temperature Transmitter
Description
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 experienced supply 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 supplied through Seven Star LLC comes with Moore Industries documentation 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 a supplier of Moore Industries products, Seven Star LLC helps ensure STZ transmitters deployed across Oman and the GCC are correctly specified for the target SIL requirement and hazardous-area classification, with technical support. This genuine 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 trusted Moore Industries suppliership 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 for a quotation for the Moore Industries STZ Functional Safety Temperature Transmitter with FMEDA safety documentation, and expert technical support for SIS temperature measurement projects across Oman and the GCC.
Related Products
Datasheets & Documents
- Datasheet Moore Industries STZ Functional Safety Dual Input Smart HART Temperature Transmitter Datasheet Download
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About brand
Moore Industries is an American manufacturer of signal interface instruments, founded in 1968 by engineer Leonard W. Moore in North Hills, California. Its first product was the SCT signal converter, built in a friend's workshop. The company has been at its North Hills headquarters since 1974 and still designs and builds its products there, known for rugged aluminium housings.
Seven Star LLC, an independent supplier in Oman, lists Moore Industries temperature transmitters, limit alarm trips, isolators and a PID backup controller, and sources units and replacements by full model number.
Moore Industries company profile
| Founded | 1968, North Hills, California, USA, by Leonard W. Moore |
|---|---|
| Headquarters | North Hills, California, since 1974 |
| Ownership | Privately owned (Moore Industries-International, Inc.) |
| First product | SCT signal converter |
| Product families | Signal isolators and converters (ECT, SCT), temperature transmitters (TRY, THZ), alarm trip units (SPA), miniMOORE multichannel signal conditioners, HART interfaces, SIL-rated safety logic solvers (STA) |
Milestones
- 1968: Leonard W. Moore founds the company and builds the first SCT signal converter.
- 1974: The company moves into its North Hills headquarters.
- 2009: miniMOORE wins a Control Engineering Engineers' Choice Award.
Moore Industries product families on this page
The manufacturer's catalog is arranged by function, and many of the items listed here map onto it directly:
- Temperature transmitters: the TRX, and the STZ functional safety dual input smart HART transmitter
- Alarm trips: the SPA2 programmable limit alarm trip, including an SPA2 with HLPRG input and four relay outputs
- Signal isolators, repeaters and converters: the SIX
- PID controllers and backup stations: the 535 in 1/4 DIN format
Other catalog groups include temperature assemblies and sensors, I/P and P/I converters, remote I/O, HART gateways and interfaces, indicators, and fieldbus device couplers.
Where Moore Industries instruments are used
These are control room and marshalling cabinet devices, plus field-mounted transmitters. Typical jobs are isolating a 4-20 mA loop between two systems, converting a thermocouple or RTD signal for a DCS input, adding an independent high or low trip next to the control system, and keeping a control loop running on a backup station when the main controller is out of service. Process plants in oil and gas, chemicals and power across the GCC use them for exactly these tasks.
Moore Industries products we list
Ordering Moore Industries instruments: what we need
Moore Industries model numbers are built from fields separated by slashes: unit, input, output, power and options, followed by the housing code in brackets. Every field matters. Send the complete string from the label, the serial number, and for programmable units the input type and range you want set. State any hazardous area or functional safety requirement, because approved versions are ordered with their own option codes.
Facts checked against trade press obituaries of Leonard W. Moore (Control Engineering, Control Global), October 2026.
Browse Moore Industries products by category: Temperature Instrumentation, Controllers & Data Acquisition, Isolator & Barrier.
FAQ
Questions about the Moore Industries STZ Functional Safety Dual Input
Answers from our engineering team on installation, compatibility and integration.
01What SIL rating does the Moore Industries STZ carry?
The STZ is exida certified to IEC 61508 for systematic integrity up to SIL 3 and random integrity up to SIL 2, suitable for single use in SIS up to SIL 2 and in redundant architectures (1oo2, 2oo3) up to SIL 3.
02What does dual sensor input provide on the STZ?
Dual input enables Backup/Failover Protection (automatic switchover to a secondary sensor), Average/Differential Measurement between two inputs, and High-Select/Low-Select monitoring, adding protection layers for critical process temperature loops.
03What is the accuracy of the STZ temperature transmitter?
The STZ delivers digital accuracy of ±0.1°C with Pt RTDs (up to ±0.05°C with Pt1000), and input-to-output analog accuracy of up to ±0.014°C when sensor-matched in Moore Industries’ calibration bath.
04Can the STZ connect directly to sensors in hazardous areas?
Yes, the -AIS option on the STZ-DIN model includes a built-in intrinsically safe barrier, allowing direct connection to sensors located in Class I Division 1/Zone 0/1 hazardous locations without a separate barrier.
05Is Seven Star LLC an experienced supply partner for Moore Industries in Oman?
Yes. Seven Star LLC supplies Moore Industries STZ transmitters as an experienced supply partner serving Muscat, Sohar, Salalah, and the wider GCC, with FMEDA safety documentation support.
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