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QD-6914/6915/6922 Thermocouple Intrinsic Safety Isolator Barrier
QD-6914 / QD-6915 / QD-6922 is a thermocouple input safety barrier designed around “Reliable Thermocouple Measurement & Conversion.” Provides dependable thermocouple measurement for industrial automation systems. The product is organized around this specific field requirement without adding unrelated functions to the measuring point. The feature is directly relevant to control cabinet, hazardous-area instrument loop and industrial process projects. Improve measurement clarity and maintenance efficiency in control cabinet applications, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.
Vesta Home Co., Ltd., established in 2020, is an innovative home furnishing brand targeting the global market. We are committed to providing eco-friendly, fun, and tech-savvy new sleep technology products, creating a scientific, friendly, sustainable, and healthy lifestyle. The company uses natural materials, gives back to nature, and creates better home products in a better way, making both people and nature more comfortable.
Vesta Home Co., Ltd. only uses renewable materials for packaging and transportation materials.
QD-6914 / QD-6915 / QD-6922 is a thermocouple input safety barrier designed around “Intrinsically Safe Thermocouple Isolation.” Separates the hazardous-area thermocouple loop from the safe-side control system. The isolated signal path separates the hazardous-area device from the safe-side control system and helps limit unwanted electrical interaction across the barrier. The feature is directly relevant to control cabinet, hazardous-area instrument loop and industrial process projects. Protect hazardous-area loops while keeping safe-side data stable, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.
Working Principle Diagram
Supported Thermocouple Types:K, E, J, T, S, N, R, B; software configurable
System Measurement Accuracy:±0.2% F.S. ± 0.5℃, full-range temperature compensated
Cold Junction Compensation Accuracy:±0.5℃ within -20℃ ~ +60℃ ambient range
Temperature Drift Coefficient:≤50ppm/℃; stable readings across wide ambient temperature fluctuations
Non-linearity Error:≤0.1% F.S.; built-in full-range thermocouple characteristic linearization
Step Response Time:≤200ms (10% → 90% full scale)
Sensor Fault Detection:Sensor break / over-range monitoring with identifiable fault status output
Adjustable Filtering:4-level selectable digital filtering; suppresses reading jitter from electrical noise and process fluctuation
Power Supply Regulation:≤0.05% F.S. over full supply voltage range; immune to on-site grid voltage fluctuations
Dimension Chart
Width x Height x Length: 17.7 mm x 110 mm x 118.9 mm
Wiring Diagram
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