4-channel input terminal NTC (10 kΩ) KL3204-0030
Error LED 1
Error LED 3
Error LED 2
Error LED 4
Top view 
Contact assembly 

KL3204-0030 | 4-channel input terminal NTC (10 kΩ)

The KL3204-0030 analog input terminal enables four NTC resistance sensors to be connected directly. The Bus Terminal's circuitry can handle sensors using the 2-wire technique. Linearisation over the full temperature range is realised with the aid of a microprocessor. The standard setting of the Bus Terminal is a resolution of 0.1 °C in the temperature range of the NTC 10 kΩ sensors. The error LEDs indicate sensor faults (e.g. a broken wire). The KL3204 combines four channels in a single housing.

Technical data KL3204-0030
Number of inputs 4
Power supply via the K-bus
Technology 2-wire
Sensor types NTC10k (carel characteristic curve, 0 °C: 27280 Ω)
Connection method 2-wire
Resolution 0.1 °C per digit
Conversion time ~ 250 ms
Measuring current typ. < 0.5 mA
Measuring error < ±1 °C
Electrical isolation 500 V (K-bus/signal voltage)
Current consumption power contacts – (no power contacts)
Current consumption K-bus typ. 60 mA
Bit width in the process image input: 4 x 16 bit data (4 x 8 bit control/status optional)
Configuration no address setting, configuration via Bus Coupler or controller
Special features open-circuit recognition
Weight approx. 70 g
Operating/storage temperature 0…+55 °C/-25…+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/markings CE, UL