KL3312 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit

KL3312 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit

The KL3312 analog input terminal allows thermocouples to be connected directly. The Bus Terminal’s circuitry can operate thermocouple sensors using the 2-wire technique. Linearization over the full temperature range is realized with the aid of a microprocessor. The temperature range can be selected freely. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminals. The KL3312 can also be used for mV measurement

Number of inputs 2

Power supply via the K-bus

Technology 2-wire

Thermocouple sensor types types J, K, L, B, E, N, R, S, T, U (default setting type K), mV measurement

Connection method 2-wire

Measuring range in the range defined in each case for the sensor (default setting: type K; -100…+1370 °C);

mV measurement: ±30 mV…±120 mV

Conversion time ~ 250 ms

Wiring fail indication yes

Resolution 0.1 °C per digit

Measurement error/ uncertainty < ±0.5 % (relative to full scale value)

Electrical isolation 500 V (K-bus/signal voltage)

Current consumption power contacts – (no power contacts)

Current consumption K-bus typ. 65 mA

Bit width in the process image input: 2 x 16 bit data (2 x 8 bit control/status optional)

Configuration no address setting, configuration via Bus Coupler or controller

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. rating/installation pos. IP20/variable

Approvals/markings CE, UL, ATEX, IECEx

Ex marking ATEX:

II 3 G Ex ec IIC T4 Gc

IECEx:

Ex ec IIC T4 Gc

>>> Refer to technical document: kl331x_kl3302en