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          • Beckhoff EL3312 Analog Input Terminal

            Product Type: EtherCAT Analog Input Terminal
            Model: EL3312
            Function: 2-Channel Thermocouple Temperature Input
            Resolution: 16-bit
            Manufacturer: Beckhoff Automation

            The Beckhoff EL3312 is a 2-channel EtherCAT analog input terminal designed for direct connection of thermocouples. It supports multiple thermocouple types, automatic linearization, internal cold-junction compensation, open-wire detection and mV measurement.

            Technical Specifications

            Parameter	Specification
            Model	EL3312
            Product Type	EtherCAT Analog Input Terminal
            Number of Inputs	2
            Input Type	Differential
            Connection	2-wire
            Resolution	16-bit
            Thermocouple Types	B, C, E, J, K, L, N, R, S, T, U
            Default Sensor	Type K
            Type K Range	Approx. -270 to +1370°C
            mV Measurement	Approx. ±30 to ±78 mV
            Sampling	Multiplexed
            Conversion Time	Approx. 1.2 s to 7 ms
            Default Conversion Time	Approx. 125 ms
            Input Filter	Typically 1 kHz
            Wire Break Detection	Yes
            Cold Junction Compensation	Internal
            E-bus Current	Approx. 70 mA
            Electrical Isolation	500 V
            Operating Temperature	0°C to +55°C
            Protection Rating	IP20
            Mounting	35 mm DIN rail
            Dimensions	12 × 100 × 68 mm
            Weight	Approx. 70 g

            Beckhoff specifies 2 differential thermocouple inputs, 16-bit resolution, multiple sensor types and mV measurement capability.

            Advantages & Features

            • 2-Channel Temperature Measurement: Allows two thermocouples to be measured independently.
            • Wide Sensor Compatibility: Supports B, C, E, J, K, L, N, R, S, T and U thermocouples.
            • 16-Bit Resolution: Provides precise temperature acquisition.
            • Direct Thermocouple Connection: No separate signal converter is required.
            • Automatic Linearization: Microprocessor-based linearization improves measurement accuracy.
            • Cold-Junction Compensation: Internal temperature measurement compensates for reference-junction temperature.
            • Open-Wire Detection: Detects broken thermocouple wiring and provides diagnostic information.
            • mV Measurement: Can also be used for low-level millivolt signals.
            • Compact EtherCAT Design: 12 mm housing saves valuable control-panel space.

            Typical Applications

            • Industrial temperature monitoring
            • Process automation
            • Furnace and oven temperature control
            • Machine monitoring
            • Chemical and petrochemical plants
            • Power generation
            • Food and pharmaceutical processing
            • Semiconductor and electronics manufacturing
            • Laboratory and test equipment
            • Industrial heating systems

The structure and details of the product：

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