KAD/TDC/102 Thermocouple ADC (reference compensation, 250 Hz b/w) - 15 channels at 1 ksps
The KAD/TDC/102 is used to condition and digitize up to fifteen thermocouple channels and three channels of module junction temperature. Each thermocouple channel can be configured separately for use with a wide range of thermocouple types.
Together, the KAD/TDC/102 and the CON/KAD/010 connector use the preconfigured module junction temperature channels 0 and 2, to perform linearization and cold junction compensation for each thermocouple channel. At the heart of the KAD/TDC/102 is a hard-wired state-machine that oversamples all channels at a rate up to 50 ksps and digitally filters any noise above the user-programmable cutoff frequency.
This is achieved using cascaded, half-band, Finite-Impulse-Response (FIR) filters followed by an 8th order Butterworth Infinite-Impulse-Response (IIR) filter with a default cutoff point set at one quarter of the sampling frequency (fc = fs/4). All signals are sampled simultaneously. When several channels are sampled at different sampling rates, at the start of an acquisition cycle, all channels are aligned.
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- 15 thermocouple input channels
- ±0.5°C typical and ±1.5°C worst case accuracy for K-type and L-type thermocouple (-50 to +150°C)
- ±1.0°C typical and ±2.5°C worst case accuracy for K-type and L-type thermocouple (outside -50 to _150°C range)
- Junction block temperature measurement
- Programmable thermocouple type (per module)
- Digital reference junction compensation
- Up to 250 Hz bandwidth
- Up to 1,000 samples per second (sps) per channel
- 8th order Butterworth filter with programmable cutoff frequency per channel
- Supports grounded and isolated thermocouples
- External, third party cold junction blocks with PT100 sensors can be used if required
- Temperature measurements with thermocouples
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