I/O-Modules
Fieldbus Terminals
2-Channel Thermocouple Analog Input Terminal
The KL3312 analog input terminal permits the direct connection of two thermocouplers. The
bus terminals circuit is capable of operating 2-wire thermocouple sensors. Linearisation
over the entire temperature range is realised by a microprocessor. The temperature range
can be chosen freely. The Error LEDs indicate wire breakages. Cold point compensation is
realised by internal temperature measurement at the terminals. Measurements in the mV
range are also possible with the KL3312.
|
Technical data |
KL3312 KL3302 (by KL3312 function-compatibly replaced) |
|
Number of inputs |
2 please notice page 72 |
|
Power supply |
via the K-Bus |
|
Thermocoupler sensor types |
Type J, K, L, B, E, N, R, S, T, U (Default; Type K), mV measurement |
|
Connection |
2-wire |
|
Temperature range |
within the defined range of each sensor (default: Type K; -100° ... 1370°C) |
|
Resolution |
0.1°C per digit |
| Wiring fail indication | Yes |
| Conversion time | app. 250 ms |
|
Measuring error (total measuring range) |
< ± 0.5% (of the upper range value) |
| Electrical isolation | 500 Vrms (K-Bus / signal voltage) |
| Current consumption from K-Bus | 65 mA typ. |
| Bit width in the process image | I: 2 x 16 bits data, (2 x 8 bits control/status) |
|
Configuration |
no address or configuration settings |
|
Operating temperature |
0°C ... +55°C |
|
Storage temperature |
-25°C ... +85°C |
|
Relative humidity |
95%, no condensation |
|
Vibrations/Shock resistance |
conforms to IEC 68-2-6 / IEC 68-2-27 |
|
EMC resistance burst / ESD |
conforms to EN 50082 (ESD, Burst) / EN 50081 |
|
Installation position |
any |
|
Type of protection |
IP20 |
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Copyright © 2000 TRS
Fieldbus Systems, Inc. All rights reserved.
Revised: July 03, 2000
.