2-channel input terminals PT100 (RTD) for 4-wire connection, high-precision EL3202-0020
Error LED2
Error LED 1 
Run LED 
Power contact
+24 V
Power contact 0 V
Top view 
Contact assembly 
extended temperature
calibration certificate

EL3202-0020 | 2-channel input terminals PT100 (RTD) for 4-wire connection, high-precision

The analog input terminal EL3202-0020 enables direct connection of resistance sensors. A microprocessor handles linearisation across the whole temperature range, which is freely selectable. The EtherCAT Terminal’s standard settings are: resolution 0.01 °C in the temperature range of PT100 sensors in 4-wire connection. The EtherCAT Terminal indicates its signal state by means of light emitting diodes. Sensor malfunctions such as broken wires are indicated by error LEDs. The EL3202-0020 has a precision of 0.1 °C at 40 °C ambient temperature. The terminal can also be operated with 2- or 3-wire connection and with other sensors than PT100. The maximum accuracy is achieved in 4-wire operation with PT100 sensors.

The calibration certificate for the respective serial number can be downloaded from www.beckhoff.com/certificates.

Technical data EL3202-0020
Number of inputs 2
Power supply via the E-bus
Technology 4-wire
Distributed clocks
Input filter limit frequency typ. 1 kHz
Sensor types PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000 resistance measurement (e.g. potentiometer, 10 Ω…1.2/4 kΩ), KTY sensors (types see documentation)
Connection method 4-wire
Measuring range -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors); -200…+320 °C (high-precision)
Resolution 0.01 °C per digit
Conversion time approx. 85 ms default setting, 2…800 ms configurable
Temperature range -200…+320 °C (PT sensors)
Measuring current < 0.5 mA (load-dependent)
Measuring error < ±0.1 °C at 40 °C ambient temperature, 4-wire connection, PT100 sensors (measuring range: -200…+320 °C) and 50 Hz filter
Electrical isolation 500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bus typ. 190 mA
Bit width in the process image 2 x 32 bit RTD input
Special features integrated digital filter, limit value monitoring, variable connection technology, with calibration certificate
Weight approx. 60 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals CE, UL, Ex
Related products
EL3202-0010 2-channel analog input terminal, PT100 (RTD), 16 bit, high-precision
EL3201-0010 1-channel analog input terminal, PT100 (RTD), 16 bit, high-precision
EL3201-0020 1-channel analog input terminal, PT100 (RTD), 16 bit, high-precision, with calibration certificate
Services and further information  
ZS9001-EL3202-0020 recalibration service for EL3202-0020: check, compensation, recalibration
ZS9001 recalibration of I/O components with calibration certificate, includes check, compensation, recalibration, package price depending on terminal series
ELxxxx-0020 EtherCAT Terminals with calibration certificate