ELX3204

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The ELX3204 terminal features 4 differential inputs, a resolution of up to 0.01°C per digit, compatibility with various sensor types like Pt100 and Ni1000, and internal resistance of ≥ 10 kΩ. Part of the EL EtherCAT Terminals series by Beckhoff, it operates within a -25 to +60°C range and is powered via the E-bus.

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Product Description:

The ELX3204 terminal from Beckhoff includes 4 differential inputs, which enable the detection of accurate temperature measurements.

This terminal uses a 2-wire connection method that creates a straightforward wiring system that operates with a wide spectrum of sensor types. The terminal supports use with Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, resistance measurement sensors between 10 Ω to 4 kΩ and KT(Y) sensors. The device delivers wide temperature measurement capabilities between -200°C and +850°C for Pt sensors paired with -60°C to +250°C for Ni sensors, which easily accommodate various industrial applications. The ELX3204 enables precise temperature measurements through its resolution capability, reaching 0.01 degrees Celsius per digit, which users can set to 0.1 degrees Celsius per digit. Minimal measurement errors exist in this device because the uncertainty remains below ±0.3% relative to the full scale value. The measuring current has a < 1 mA limit, which depends on sensor type and measuring scale, while maintaining power-efficient performance and accurate data collection. The terminal incorporates an internal resistance with a minimum value of 10 kΩ (differential) to minimize signal interference during stable data acquisition.

The 1 kHz frequency setting in the input filter aids noise reduction to enhance temperature measurement accuracy in acutely electrically contaminated environments. Users can adjust the conversion time from 10 ms to 3300 ms, yet the default value stands at 270 ms to support diverse sampling speed needs. The terminal receives power from a 24 V DC source through power contacts that get their energy supply from the ELX9560 power supply unit. The power contacts support a continuous energy-efficient operation because their typical current draw remains at 10 mA. The product works at ambient temperatures between -25°C to +60°C while the storage conditions enable functionality from -40°C to +85°C.

Connection method
2-wire
Conversion time
10…3300 ms adjustable (default 270 ms)
Current consumption
10 mA (typ.)
Filter limit frequency
1 kHz (typ.)
Input resistance
≥ 10 kΩ (differential)
Measurement range
-200…+850°C (Pt sensors); -60…+250°C (Ni sensors)
Measurement uncertainty
< ±0.3% FS
Measuring current
< 1 mA
Number of inputs
4 (differential)
Operating temperature
-25…+60°C
Power supply
E-bus or 24 V DC (power contacts/ELX9560)
Resistance measurement range
10 Ω…4 kΩ
Resolution
up to 0.01°C per digit (preset 0.1°C)
Storage temperature
-40…+85°C
Supported Ni sensors
Ni100, Ni120, Ni1000
Supported Pt sensors
Pt100, Pt200, Pt500, Pt1000
Thermocouple types
KT, KTY

Frequently Asked Questions about ELX3204:

Q: Which sensors are compatible with the ELX3204 terminal?

A: The ELX3204 supports Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, KT(Y), and resistance sensors from 10 Ω to 4 kΩ.

Q: How many temperature input channels does the ELX3204 provide?

A: The terminal provides four differential input channels, allowing it to measure temperature from multiple sources simultaneously.

Q: Does the ELX3204 minimize electrical noise during measurement?

A: Yes, it includes a 1 kHz input filter to reduce noise and maintain accurate readings even in electrically noisy environments.

Q: Is the ELX3204 customizable for different sampling speeds?

A: Absolutely. Users can adjust the conversion time from 10 ms to 3300 ms to match the requirements of their specific application.

Q: Can the ELX3204 operate in extreme environments?

A: Yes, it functions reliably between -25°C to +60°C and can be stored from -40°C to +85°C, making it suitable for rugged industrial conditions.


Internal Product Review

  • ‘‘The ELX3204 offers a smart and reliable temperature measurement solution for industrial automation. Its flexible sensor support, precision filtering, and compact design make it a dependable option for control systems that demand accuracy and adaptability.’’

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