Product
DSP AD5430-07(Thermocouple board)
Features
This board is for voltage inputs frorm thermocouple inputs (K, T, J). It provides 8 channels for thermocouple measurement in addition to the cold contact compensation. Measurement speed is 250 msec/8ch (4 measurements per second). The board consists of two sub-boards ( two slots required):,a main board and the a daughter board.
Specifications
| Input channel number | Thermocouple voltage input: 8ch |
|---|---|
| Measurement period | Fixed at 250 msec/8ch |
| Measurement target | Thermocouple: K, T, and J |
| Voltage: ±200 mV, ±2 V, ±20 V | |
| Measurement resolution | 0.1° |
| Reference contact compensation accuracy | ±0.5° (when measuring 0° or higher) |
| Maximum permitted input voltage | ±25 V DC |
| Insulation withstand voltage | 1000 VAC (50/60 Hz) for 1 min. |
| Input resistance | 10 MΩ or greater |
| Input external resistance | 2 kΩ or smaller |
| Cold contact point compensation | The input of the thermo sensor attached on the terminal board is read and used as the reference contact compensation for the thermocouple input. |
| Burnout detection | Provides discontinuity detection for thermocouple sensors. When burned out, output swings fully to the positive side. |
Measurement range
| Range | Measurement range | Measurement accuracy | |
|---|---|---|---|
| K | -200.0 to 1370.0 | Degree | ±(0.15% of reading +0.7°) For -200 to-100°, ±(0.15% of reading +1°) |
| T | -200.0 to 800.0 | Degree | ±(0.15% of reading +0.5°) For -200 to-100°, ±(0.15% of reading +0.7°) |
| J | -200.0 to 1100.0 | Degree | |
| ±200mV | -200.0 to +200.0 | mV | ±(0.1% of reading +200µV) |
| ±2V | -2.000 to +2.000 | V | ±(0.1% of reading +2mV) |
| ±20V | -20.00 to +20.00 | V | ±(0.1% of reading +20mV) |