R. STAHL 9182 Series Modules

Technical Dossier

Product Details And Specifications

R. STAHL 9182 Series: Comprehensive Module Range and Technical Overview

The R. STAHL 9182 Series is a family of intrinsically safe temperature transmitters engineered for deployment in Zone 1 and Zone 2 hazardous areas under ATEX and IECEx certification frameworks. These devices are installed across global heavy industry sectors including petrochemical refineries, offshore oil & gas platforms, nuclear auxiliary systems, and large-scale chemical processing plants. The 9182 series converts thermocouple (TC) and resistance temperature detector (RTD) signals into standardized 4–20 mA analog outputs, providing galvanic isolation and EMC-compliant signal conditioning for DCS and SCADA integration. Their compact DIN rail form factor and wide ambient temperature tolerance (−40 °C to +70 °C) make them a standard specification item in EPC contractor bills of materials for hazardous-area instrumentation projects worldwide.

The Evolution of 9182 Architecture

The 9182 series was introduced by R. STAHL (formerly Stahl Schaltgeräte) as part of its IS1 intrinsic safety barrier and transmitter platform, designed to interface field-level temperature sensors in Ex zones with non-Ex control room equipment. Early variants of the 9182 used passive Zener barrier technology for signal isolation. Subsequent generations integrated active galvanic isolation, eliminating the requirement for an intrinsically safe earth and simplifying installation in floating-earth DCS architectures. The series evolved to support both 2-wire and 3-wire RTD configurations (Pt100, Pt1000, Ni100) as well as Type B, E, J, K, N, R, S, and T thermocouples, with software-configurable input selection on later variants. Compatibility with HART protocol was introduced in select sub-models, enabling remote configuration and diagnostics without loop interruption. As the broader IS1 platform has matured, the 9182 series has entered a stable/late-lifecycle phase; R. STAHL continues to supply replacement units and spare stock, but engineering focus has shifted to the newer 9187 and 9188 series with enhanced HART 7 and fieldbus capabilities. For plants with existing 9182 installations, direct form-fit-function replacement remains available, and DriveKNMS maintains sourcing channels for both current-production and discontinued sub-variants.

9182 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the R. STAHL 9182 series, classified by input type and output configuration. Each entry reflects a distinct ordering code used in EPC and MRO procurement.

9182/20-51-11: RTD/TC input, 4–20 mA 2-wire output, ATEX Zone 1, DIN rail mount, galvanic isolation.
9182/20-51-01: RTD/TC input, 4–20 mA output, without HART, standard ambient range.
9182/20-51-21: RTD/TC input, 4–20 mA output with HART protocol, Zone 1 certified.
9182/20-52-11: Dual-channel RTD input, 2× 4–20 mA output, galvanic isolation, DIN rail.
9182/20-52-01: Dual-channel TC input, 2× 4–20 mA output, non-HART variant.
9182/11-51-11: Pt100 RTD dedicated input, 4–20 mA, Zone 1, compact housing.
9182/11-51-21: Pt100 RTD input with HART, 4–20 mA, ATEX/IECEx dual-certified.
9182/12-51-11: Thermocouple-only input (J/K/T/E), 4–20 mA, Zone 1, galvanic isolation.
9182/12-51-21: Thermocouple input with HART, 4–20 mA, extended TC type range.
9182/20-53-11: RTD/TC input, 4–20 mA, SIL 2 capable, functional safety rated.
9182/20-53-21: RTD/TC input, HART + SIL 2, for safety-instrumented system (SIS) loops.
9182/20-54-11: High-accuracy RTD input, ±0.1 °C typical accuracy, 4–20 mA output.
9182/20-55-11: Wide-range TC input (B/R/S types), 4–20 mA, high-temperature process applications.
9182/20-56-11: Millivolt input variant, 4–20 mA output, for non-standard sensor types.
9182/20-57-11: Potentiometer/resistance input, 4–20 mA, position and level transmitter interface.
9182/20-58-11: Universal input (RTD/TC/mV/Ω), HART, SIL 2, full-featured flagship variant.

Sourcing Hard-to-Find & Obsolete 9182 Series Parts

Several sub-variants of the 9182 series have been discontinued from R. STAHL's standard production schedule as the product line transitions toward next-generation transmitter platforms. DriveKNMS operates a dedicated obsolete and long-tail parts sourcing function for the 9182 range. Stock is sourced through authorized distributor overstock, decommissioned plant asset recovery, and certified refurbishment channels. All units sourced through DriveKNMS are subject to provenance verification: serial number cross-referencing against R. STAHL production records, physical inspection for counterfeit indicators, and functional pre-shipment testing. For end-users operating 9182-based temperature loops in facilities with 10–25 year maintenance horizons (refineries, nuclear balance-of-plant, LNG terminals), DriveKNMS provides multi-unit buffer stock agreements and consignment inventory programs to eliminate unplanned downtime risk from parts unavailability.

Quality Control for the 9182 Range

The 9182 series presents specific quality verification requirements due to its intrinsic safety certification dependencies and analog signal chain precision. DriveKNMS applies the following test protocol to all 9182 units processed through its facility: (1) Visual inspection of terminal blocks, housing integrity, and label legibility against R. STAHL factory standards. (2) Insulation resistance test between input, output, and power supply circuits to verify galvanic isolation integrity (minimum 100 MΩ at 500 VDC). (3) Functional loop test: application of calibrated RTD simulation (Pt100 decade box) and TC millivolt source across the full input range; output current verified at 4.00 mA (0%), 12.00 mA (50%), and 20.00 mA (100%) with ±0.05 mA tolerance. (4) HART communication verification (where applicable): connection to HART communicator to confirm device descriptor, PV mapping, and alarm configuration registers. (5) Ambient temperature soak test at −20 °C and +60 °C to verify output stability across operating range. All test data is logged and available to customers upon request as a unit-level certificate of conformance.