Description
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.
| Technical data | KL3312 |
|---|---|
| Number of inputs | 2 |
| Power supply | via the K-bus |
| Technology | 2-wire |
| >td >types J, K, L, B, E, N, R, S, T, U (default setting type K), mV measurement | |
| 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 |
| Connection method | 2-wire |
| 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 |
- Technical data
- Housing data
| Housing data | KL-12-8pin |
|---|---|
| Design form | compact terminal housing with signal LEDs |
| Material | polycarbonate |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Side by side mounting by means of | double slot and key connection |
| Marking | labeling of the BZxxx series |
| Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver |
| Connection cross-section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² |
| Connection cross-section AWG | s*: AWG28…14, st*: AWG28…14, f*: AWG26…16 |
| Stripping length | 8…9 mm |
| Current load power contacts | Imax: 10 A |
*s: solid wire; st: stranded wire; f: with ferrule
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