The ATCD-415A is used to condition and digitize up to fifteen analog thermocouple channels and three 4-wire RTD channels.
Key features
- 15 grounded or isolated thermocouple input channels
- Three PT50/PT100 channels and one built-in top-block sensor for junction compensation
- Supports multiple thermocouple types with digital cold junction compensation and programmable thermocouple type per channel
- Accuracy (0.5°C typical for K-type in -50 to 150°C range, 1°C typical outside this range)
- 16-bit simultaneous sampling with three configurable output streams on each channel
- User-defined linearization and compensation for errors in the entire measurement chain
- Open thermocouple detection
Applications
- Thermocouple temperature measurements
The ADAU-2006 is a 6 user-slot Axon chassis, which along with the housing and backplane, includes an isolated 50W power supply for the controller and user modules.
The ASCD-424A is used to condition and digitize up to 24 analog differential-ended channels. Single-ended configurations are possible by enabling programmable pull-down resistors on any of the negative inputs.
The ASCD-424A is used to condition and digitize up to 24 analog differential-ended channels. Single-ended configurations are possible by enabling programmable pull-down resistors on any of the negative inputs.
ATCD-415A Thermocouple ADC
The ATCD-415A is used to condition and digitize up to fifteen analog thermocouple channels, three 4-wire RTD (dedicated for PT100) channels and offers a top-block built-in temperature sensor.
The ATCD-415A performs linearization for the selected cold junction sensor and thermocouple and compensates the thermocouple channel accordingly. Any of the three PT50/PT100 channels or top-block built-in temperature sensor can be selected as cold junction compensation.
The module offers programmable pull-down resistors for thermocouples isolated from the module ground.
At the heart of the ATCD-415A is a hard-wired state machine that oversamples all channels at a rate between 50 ksps and 100 ksps and digitally filters any noise above the user-programmable cutoff frequency. This is achieved using cascaded, 15-tap FIR filters with output rate decimation, followed by a final FIR or IIR filter. If IIR filtering mode is selected, the last digital filter in the filtering chain is an 8th or 16th order (selectable) Butterworth filter. If FIR mode is selected, the last digital filter in the filtering chain is a 49-tap Kaiser window, Beta 6 filter.
There are three independently configurable output streams per channel, allowing different sample rate, cutoff, and filter type to be selected for each output stream.
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.
Aerospace Instrumentation Brochure
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Axon ADAU Data Acquisition Unit (DAU) Product Family Brochure
For airborne applications where reliability and size, weight, and power (SWaP) are critical, the Curtiss-Wright Axon ADAU family of data acquisition units (DAU) are ready to take flight. Designed leveraging our decades of experience as a trusted, proven leader, ADAUs are future-proof, SWaP-optimized, and available in a variety of flexible configurations to meet your exact program requirements.