The 5226D20H01 is a dedicated temperature acquisition I/O module for Emerson Ovation DCS. The suffix H01 represents fixed hardware version and factory preset configuration. It accesses field Pt100 and other RTD thermal resistance sensors, converts resistance changes corresponding to actual temperature into digital signals, and transmits data to the DPU controller for temperature display, over-temperature interlock protection and closed-loop temperature control.
Adopts rack plug-in structure, supports hot swapping without impacting other modules in the same control rack. Each channel is equipped with independent galvanic isolation, surge suppression and overvoltage protection circuits, which can effectively restrain interference brought by long field sensor cables and avoid backplane circuit damage caused by abnormal external signals.
Built-in full-channel online diagnosis function can real-time detect sensor open circuit, short circuit, wire breakage and module internal hardware faults, fault information will be uploaded to the operator station for remote alarm and maintenance reminder.
Sensor type, measuring range scaling, digital filtering time and fault action strategies are configured uniformly in Ovation engineering software. It features high measurement precision, low temperature drift and strong EMC performance, widely used for equipment temperature monitoring in thermal power, petrochemical, metallurgy and other process industries.
Technical Specifications
Input Channel Characteristics
Multi-channel isolated RTD input, natively compatible with Pt100 platinum thermal resistance; supports standard three-wire connection mode and automatically compensates line resistance error;
Independent loop fault diagnosis per channel, fast on-site positioning of broken wire, short circuit and bad contact;
Configurable digital filtering eliminates signal jitter caused by electromagnetic interference.
Measurement Precision
High-precision resistance sampling circuit ensures tiny temperature measurement error and low long-term drift, fully satisfies accurate monitoring requirements for turbine/generator bearing temperature, motor winding temperature, fan and pump bearing temperature, furnace wall temperature and pipeline surface temperature in power plants.
Power Supply Mode
Powered by Ovation rack backplane bus, no external auxiliary power wiring required; low power consumption will not increase load on rack redundant power supplies. Matched rear terminal base is supplied together for concentrated termination of sensor cables, convenient for field wiring and later maintenance.
Configuration & Diagnosis
Continuous self-test covers internal hardware and every external RTD measurement loop;
Front panel LEDs display real-time running status, fault codes uploaded synchronously to upper monitoring system;
Each channel can individually set sensor type, temperature alarm threshold and filter parameters to adapt to diverse field measurement conditions.
Environmental Parameters
Operating temperature：0℃ ~ +60℃
Storage and transport temperature：−40℃ ~ +85℃
Relative humidity：≤95% RH, non-condensing
Standard Ovation I/O unified outline size, freely interchangeable among rack slots
Front Panel LED Indicators
OK light: Module hardware and communication normal operation
Channel individual indicators: Real-time connection status of each temperature measuring channel
Fault light: Hardware failure or RTD loop abnormality alarm
Application Scenarios
Thermal Power Industry
Collect Pt100 temperature signals of turbine, generator, fans, feed pumps bearing temperature, motor winding temperature, boiler flue duct wall temperature and steam pipeline surface temperature, providing data support for overtemperature interlock protection and temperature trend monitoring in DCS.
Petrochemical Industry
Monitor reactor wall temperature, fractionator shell temperature, medium temperature in pipelines and pump bearing temperature, realize over-temperature alarm and safety shutdown interlock for process units.
Metallurgy Industry
Acquire heating furnace body temperature, roller bearing temperature and cooling pipeline temperature signals, guarantee stable temperature control for smelting and rolling production lines.
General Process Industry
Applied in heating stations, water treatment plants, paper mills and other factories to collect equipment and pipeline temperature data, realize unified temperature monitoring and safety protection on DCS platform.
Get a Quote