METSO A413222: 8-Channel Isolated Temperature Input Module
The METSO A413222 is a high-precision 8-channel isolated temperature input module specifically engineered for Metso Damatic XD and Valmet DNA distributed control systems. It provides direct connection to a wide range of thermocouple and RTD sensors without external signal conditioners. Each channel features individual galvanic isolation (1500V AC), 24-bit sigma-delta ADC, programmable input types, and comprehensive diagnostics including wire-break detection and sensor out-of-range monitoring. The module supports 2/3/4-wire RTD connections with automatic lead resistance compensation and internal/external cold-junction compensation for thermocouples. Housed in a rugged DIN-rail mountable enclosure with conformal-coated PCB, the A413222 operates from -20°C to +60°C and meets CE/UL/ATEX certifications. It is the ideal solution for temperature-critical applications in pulp & paper, power, chemical, oil & gas, and pharmaceutical industries.
Platform Compatibility
The A413222 is a dedicated temperature input module for Metso Damatic XD and Valmet DNA DCS platforms. It occupies a single I/O slot and is fully integrated into Valmet DNA Workbench with pre-configured function blocks and faceplates. Field-mount IP65 variants are available for remote installation.
Key Features and Functional Capabilities
8 Fully Isolated Input Channels: Each channel provides 1500V AC galvanic isolation from the backplane and 500V DC channel-to-channel isolation, eliminating ground loops and ensuring measurement integrity in high-noise industrial environments.
Universal Sensor Compatibility: Directly connects to thermocouple types J, K, T, E, N, R, S, B and 2/3/4-wire RTDs (PT100, PT500, PT1000, Ni100, Cu10). No external transmitters or signal conditioners required.
High-Resolution 24-Bit ADC: Per-channel sigma-delta analog-to-digital converter provides 0.01°C measurement resolution and ±0.05% full-scale accuracy, enabling precise temperature control.
Advanced Compensation: Built-in cold-junction compensation (CJC) via precision thermistor on the terminal block. Automatic lead resistance compensation for 3- and 4-wire RTDs eliminates cable length errors.
Comprehensive Diagnostics: Per-channel wire-break detection, sensor out-of-range alarms, and drift monitoring. Module status LEDs (POWER, RUN, FAULT) and per-channel input status LEDs.
Configurable Signal Processing: Software-selectable filter (50/60Hz rejection), averaging, burnout direction (upscale/downscale), and linearization per sensor type.
Robust Industrial Design: Conformal-coated PCB (IPC-CC-830B) protects against humidity, condensation, and corrosive gases. Operating temperature -20°C to +60°C, storage -40°C to +85°C. Vibration and shock tested per IEC 60068-2-6/27.
Hot-Swap Capable: Module can be inserted or removed while backplane is powered without affecting adjacent I/O modules, minimizing process downtime.
Removable Terminal Blocks: Screw-type terminals (0.2-2.5 mm²) with integrated CJC sensor for easy wiring and maintenance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Isolated Temperature Input Module, 8 channels |
| Part Number | A413222 (variants: A413222-01, A413222-IP65) |
| Input Channels | 8 differential, individually isolated |
| Sensor Types | Thermocouple: J, K, T, E, N, R, S, B (ITS-90 linearization) RTD: PT100, PT500, PT1000, Ni100, Cu10 (2/3/4-wire) Resistance: 0-400Ω, 0-4000Ω Voltage: 0-100mV, ±100mV (for transmitter signals) |
| ADC Resolution | 24-bit sigma-delta |
| Accuracy | Thermocouple: ±0.5°C typical (J,K,T,E) ; ±1.0°C (R,S,B) RTD: ±0.1°C typical (PT100, 4-wire) ±0.05% of reading (voltage/resistance mode) |
| Sampling Rate | 10 Hz (all channels scanned sequentially) |
| Noise Rejection | NMRR >60dB @50/60Hz, CMRR >120dB @50/60Hz |
| Isolation | 1500V AC channel-to-backplane (1 min) 500V DC channel-to-channel (continuous) |
| Cold-Junction Compensation | Internal sensor on terminal block, accuracy ±0.2°C; external CJC input available |
| RTD Excitation Current | 250µA (PT100), 100µA (PT1000), pulsed to minimize self-heating |
| Wire-Break Detection | Programmable upscale/downscale, per-channel enable |
| Field Supply Voltage | 24V DC ±20% (external or backplane powered), max 50mA |
| Diagnostics | Per-channel: wire break, overrange/underrange, CJC fault. Module: POWER, RUN, FAULT LEDs; health status via backplane |
| Operating Temperature | -20°C to +60°C (standard), -30°C to +70°C (IP65 variant) |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing (IEC 60068-2-30) |
| Vibration / Shock | IEC 60068-2-6 (10-500Hz, 5g) / IEC 60068-2-27 (30g, 11ms) |
| EMC Immunity | IEC 61000-6-2 (industrial environment), EN 61000-4-2/3/4/5/6 |
| Protection Rating | IP20 (rack module), IP65 (field-mount variant with M12 connectors) |
| Mounting | 35mm DIN rail (EN 60715) or panel mount (IP65) |
| Connectors | Removable screw terminal blocks, 0.2-2.5 mm² (rack); M12 circular connectors (IP65) with integrated CJC |
| Dimensions (W×H×D) | 100 × 60 × 30 mm (rack) / 150 × 120 × 50 mm (IP65) |
| Weight | Approx. 0.45 kg (rack), 0.95 kg (IP65) |
| Certifications | CE, UL 61010-1, CSA C22.2, ATEX/IECEx (Zone 2, IP65 variant) |
| MTBF | >1,000,000 hours @40°C (Telcordia SR-332) |
Industrial Applications
The METSO A413222 isolated temperature input module is the preferred choice for accurate and reliable temperature measurement in critical process applications:
Pulp & Paper: Digester cooking temperature, bleaching tower reactions, dryer cylinder surface temperature, and black liquor concentration monitoring.
Power Generation: Boiler superheater/reheater outlet temperature, turbine bearing metal temperature, generator stator winding temperature, and flue gas desulfurization scrubber temperature.
Chemical & Petrochemical: Reactor jacket temperature control, distillation column tray temperatures, polymerization exotherm monitoring, and storage tank heating control.
Oil & Gas: Wellhead flowline temperature, separator inlet temperature, pipeline preheating, and LNG vaporizer control.
Pharmaceutical & Biotech: Fermenter temperature profiling, sterilizer validation mapping, freeze dryer shelf temperature, and cleanroom environmental monitoring.
Food & Beverage: Pasteurization temperature verification, retort sterilization, baking oven profiling, and cold storage monitoring.
Operational Benefits and Lifecycle Value
Elimination of Signal Conditioners: Direct sensor connection removes the need for external temperature transmitters, reducing hardware costs, panel space, and wiring complexity.
Superior Measurement Accuracy: 24-bit resolution and per-channel isolation ensure trustworthy data for regulatory compliance (FDA 21 CFR Part 11, cGMP) and product quality.
Reduced Engineering Effort: Pre-engineered faceplates and built-in sensor linearization in Valmet DNA Workbench dramatically speed up configuration and commissioning.
Minimized Downtime: Per-channel wire-break detection and individual channel status LEDs allow immediate identification of faulty sensors. Hot-swap capability enables module replacement without process interruption.
Lower Total Cost of Ownership: High channel density (8 inputs per slot) maximizes I/O utilization. Long-term product availability and support protect capital investment for decades.
Global Hazardous Area Approvals: ATEX/IECEx certified IP65 version permits direct installation in Zone 2/22 hazardous locations without additional protection enclosures.
Configuration and Ordering Information
A413222 – Standard 8-channel isolated temperature input module for Damatic XD/DNA I/O racks, IP20, DIN rail mount, screw terminals with integrated CJC.
A413222-01 – High-accuracy variant (±0.1°C RTD, ±0.3°C TC) with enhanced linearization and extended calibration certificate.
A413222-IP65 – Field-mount version with IP65 enclosure, M12 connectors, integrated CJC, -30°C to +70°C operating range, ATEX/IECEx Zone 2/22 certified.
