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KL3214 | Bus Terminal, 4-channel analog input, temperature, RTD (Pt100), 16 bit, 3-wire connection

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KL3214 | Bus Terminal, 4-channel analog input, temperature, RTD (Pt100), 16 bit, 3-wire connection

KL3214 | Bus Terminal, 4-channel analog input, temperature, RTD (Pt100), 16 bit, 3-wire connection

Run LED
Err LED
CH1...4
Power contact
+24 V
Power contact 0 V
+R1
RL1
+R2
RL2
+R3
RL3
+R4
RL4
-R1
-R2
-R3
-R4
Top view 
Contact assembly 
KL3214 | Bus Terminal, 4-channel analog input, temperature, RTD (Pt100), 16 bit, 3-wire connection

KL3214 | Bus Terminal, 4-channel analog input, temperature, RTD (Pt100), 16 bit, 3-wire connection

The KL3214 analog input terminal allows four resistance sensors to be connected directly. The Bus Terminal circuit can operate sensors using the 3-wire technique in a compact 12 mm housing. A microprocessor handles linearization across the whole temperature range, which is freely selectable. The Bus Terminal’s standard settings are: resolution 0.1°C. Sensor malfunctions such as broken wires are indicated by error LEDs.

Product status:

regular delivery

Product information

Technical dataKL3214
Number of inputs4
Power supplyvia the K-bus
Input filter limit frequencytyp. 1 kHz
Sensor typesPt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, potentiometer: 10 Ω…1.2/4 kΩ, KTY sensors (types see documentation)
Measuring range-200…+850°C (Pt sensors); -60…+250°C (Ni sensors)
Connection method3-wire
Conversion timeapprox. 170 ms default setting
Measuring current< 0.5 mA (load-dependent)
Resolution0.1°C per digit
Measurement error/uncertainty< ±0.5°C for Pt sensors
Electrical isolation500 V (K-bus/signal voltage)
Current consumption power contacts
Current consumption K-bustyp. 120 mA
Special featuresopen-circuit recognition
Weightapprox. 60 g
Operating/storage temperature0…+55°C/-25…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL
Housing dataHD housing
Design formHD (High Density) housing with signal LEDs
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Marking
Wiringsolid conductors (s): direct plug-in technique; fine-stranded conductors (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…1.5 mm²,
st*: 0.25…1.5 mm²,
f*: 0.14…0.75 mm²
Stripping length8…9 mm

*s: solid wire; st: stranded wire; f: with ferrule

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