DAU2100 ROSEMOUNT

Description

Detailed Parameter Table

Product Introduction

The DAU 2100 from Rosemount TankRadar (Emerson) is a rugged, intrinsically safe data acquisition and local read‑out unit designed to complement the TankRadar Rex gauging system. It provides additional temperature input capacity beyond what the Rex gauge can natively support, allowing up to 14 Pt100 elements (spot or multi‑spot) to be connected and monitored. The DAU 2100 also optionally includes a local LCD display, enabling operators to view level, ullage, spot temperature, average temperature, or analog input values at tank level, without climbing to the top.

Electrically, the DAU 2100 is powered and communicates via the TRL/2 bus originating from the Rex gauge. It is designed for hazardous area installations and conforms to intrinsic safety certification (EEx ia II C T4) to ensure safe operation in flammable environments. The unit is housed in a weatherproof enclosure with high ingress protection, built to endure outdoor exposure, dirt, and harsh conditions. Typical operating temperature range spans from –40 °C to +70 °C, making it suitable for extreme environments.

The DAU 2100 plays a critical role in advanced tank gauging systems by expanding temperature sensing capability, supporting local diagnostics, and enhancing measurement redundancy. Its integration into the Rex system architecture maintains metrology integrity while simplifying system wiring and minimizing the burden on the main gauge electronics.

Core Advantages and Technical Highlights

Extended temperature sensing capacity:
By accommodating up to 14 Pt100 sensors, the DAU 2100 enables extensive temperature profiling within a tank—spot sensors, averaging, or temperature gradients—beyond what the Rex gauge alone can support.

Local read-out capability:
With an optional built-in LCD, the DAU 2100 displays key variables locally (level, ullage, spot / average temperature). This local visibility means operators can conduct basic checks or diagnostics at ground level without needing remote access or climbing to the gauge head.

Intrinsic safety and hazardous‑area design:
Certified for EEx ia II C T4, the DAU 2100 supports intrinsically safe circuits, making it suitable for installation in Zone 0/1/2 hazardous locations when connected via the TRL/2 bus. This ensures safe operation even in explosive atmospheres.

Rugged enclosure and environmental resilience:
Built with IP66/IP67 rating, the DAU 2100 resists water, dust ingress, and corrosive conditions. Its construction is suitable for long-term field deployment in remote or challenging environments.

High accuracy and resolution:
Aside from sensor precision, the DAU 2100 itself boasts ±0.2 °C accuracy (within –20 to +100 °C) and a display resolution of 0.1 °C, ensuring meaningful, precise temperature measurements.

Compact modular integration:
Designed to integrate seamlessly with Rex gauges via TRL/2 bus, the DAU 2100 avoids excessive wiring. It can be mounted at the tank foot or even near the gauge head, offering flexibility in system layout.

Diagnostic and fault resilience:
The DAU 2100 supports detection of sensor faults, wiring errors, or temperature channel failures. This diagnostic visibility helps safeguard against measurement anomalies and simplifies troubleshooting.

Typical Application Scenarios

The DAU 2100 is used globally in custody transfer and inventory management tank systems, particularly in oil, petroleum, chemical and storage terminal facilities. Common deployment scenarios include:

• Large storage tanks with multiple temperature profiles: The DAU 2100 supports detailed temperature mapping (top, middle, bottom) for correct volume compensation and product stratification tracking.

• Remote or offshore tanks: In installations where climbing to the gauge head is difficult or unsafe, DAU 2100 provides local read-outs at tank base or manhole level.

• Retrofit systems: Adding a DAU 2100 to existing Rex radar gauges expands temperature channel availability without replacing existing radar modules.

• Custody transfer systems: Accurate temperature sensing is critical for volume correction in invoiced transfers; DAU 2100 enhances measurement integrity by providing robust sensor readings backed by diagnostics.

• Hazardous area installations: Because the DAU 2100 is intrinsically safe, it fits directly into explosive-rated tank environments, supporting safe local measurement without compromising safety certification.

In each case, DAU 2100 augments the Rex system’s temperature capacity and adds local visibility—boosting measurement confidence, reducing climb requirements, and strengthening system resilience.

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