B1-L4NTC is one of the B1-PLC series analog expansion modules which can support up to 4 channels of NTC thermistor measurement. The measurement is conducted by internally place a reference voltage with a series resistor to excite the NTC under test. If the temperature is changed then the resistance of NTC is also changed which will also be reflected on the changing of A/D conversion value. By looking up the temperature/resistance characteristic and the A/D value, the user can deduce the measurement temperature.
Fatek-B1-L4NTC Analog I/O Expansion Module
B1-L4NTC is one of the B1-PLC series analog expansion modules which can support up to 4 channels of NTC thermistor measurement.
- 4 Channels
- NTC temperature input module
- 12-bit resolution
- Measuring range 100
Due to the characteristic of temperature/resistance of NTC and the relation between measurement resistance and A/D value are non- linear, the user should first establish a data table according to the characteristic of applied NTC then apply it in MLC ladder function in order to convert the A/D value back into corresponding temperature.
|Features||4 channels, 12-bit NTC temperature input module (100Ω~100KΩ)|
|Wiring Mechanism||3.81 mm European detachable terminal block|
Datasheet: Fatek-B1-L4NTC Analog I O Expansion Module