ProDAQ 6151: High-Accuracy Thermocouple Acquisition for Extreme Test Conditions
Modern aerospace and propulsion test facilities demand thermocouple measurements that remain accurate, stable, and synchronizable across large distributed systems. From cryogenic engine development to high-temperature thrust-chamber qualification, temperature data is mission-critical. The ProDAQ 6151 Isolated Precision Thermocouple LXI Instrument delivers the accuracy, redundancy, and system-level scalability required for these applications — making it ideal for applications such as cryogenic test stands, high-energy test cells, and long-duration endurance tests.
Purpose-Built for Precision in Harsh Test Conditions
The ProDAQ 6151 provides 16 fully isolated thermocouple input channels, each with its own dedicated 24-bit sigma-delta ADC and cold junction compensation sensor. This architecture ensures stable, drift-free temperature acquisition — even under significant electrical noise, high common-mode voltages, or rapidly changing test conditions often seen in rocket engine programs and cryogenic systems.
With redundant power inputs, dual Ethernet ports, and native IEEE-1588 time synchronization, the 6151 integrates seamlessly into large-scale distributed DAQ networks where uptime and determinism are essential.
Key Features & Technical Highlights
High-Accuracy Thermocouple Measurement Performance
- Supports J, K, N, C, T, and E thermocouple types.
- Temperature spans from –200 °C to +2300 °C, depending on type (e.g., Type C: up to +2300 °C).
- Temperature accuracy as low as ±0.5 °C + 0.05% of span for common types; ±1.0 °C for Type C.
- Cold Junction Compensation per channel, bonded for fast thermal tracking and ±0.5 °C accuracy.
Per-Channel Isolation & Robust Protection
- 300 VDC isolation channel-to-channel and to chassis, eliminating ground loops.
- ±30 V input protection against miswires, transients, and installation errors.
- EMI filtering on every channel for clean data in electrically noisy test facilities.
- Common Mode Rejection ≥ 80 dB, enabling stable reads even with large voltage offsets.
Simultaneous 24-bit Sampling for High-Fidelity Data
- Dedicated ADC per channel ensures true simultaneous sampling.
- Configurable from 1 to 1000 samples/s with 1-Hz resolution.
- Integrated FIR low-pass filtering scaled to sample rate (100 Hz at 1 kS/s).
Advanced Operational Features
- Open thermocouple detection with both software and front-panel LED indication — critical for long tests.
- Two analog outputs per channel (0–10 V) for modelling, retransmission, or hardware-in-the-loop applications.
- Intelligent software interface: SCPI/VXI-11 (VISA), TCP/IP, and web-based control.
- Dual redundant Gigabit Ethernet ports for reliability and flexible network topologies.
Industrial Reliability
- Operational temperature range: 5 °C to +50 °C.
- Redundant universal AC power inputs (85–264 V AC).
- Compact 1U, 19-inch rackmountable form factor with available rack-mount or tabletop accessories.
Designed for Demanding Aerospace and Cryogenic Test Programs
In propulsion and cryogenic systems testing, temperature gradients can be sharp, dynamic, and extreme. The ProDAQ 6151’s combination of true simultaneous sampling, per-channel isolation, and high-accuracy CJC ensures engineers capture every transient and thermal event with confidence. Its IEEE-1588 synchronization allows multiple 6151 units — or mixed Bustec LXI instruments — to operate as a unified, time-coherent DAQ system across distributed test stands.
Test facility managers benefit from:
- Fewer wiring issues due to high isolation
- Immediate fault identification via per-channel open-TC indicators
- Enterprise-grade uptime with dual Ethernet and redundant power
Scaling from a single 16-channel module to facility-wide systems
This makes the 6151 particularly suited for rocket engine thermal mapping, cryogenic fuel system testing, environmental test chambers, and endurance rigs where system reliability and measurement certainty are non-negotiable.
Learn More or Request a Consultation
The ProDAQ 6151 is part of Bustec’s modular LXI instrumentation platform engineered for high-accuracy, synchronized measurement in the world’s most demanding test applications.
To discuss your application or request a technical briefing, visit:
www.bustec.com/contact
