Kongsberg GC‑306‑U1N Cargo Temperature Unit

The GC‑306‑U1N is a marine‑approved intrinsically safe Cargo Temperature Unit for Kongsberg K‑Gauge tank gauging system. It serves as multi‑channel signal converter, supporting up to six Pt‑100 temperature sensors installed inside LNG / LPG cargo tanks, converting raw sensor signals into standard digital data for tank monitoring and custody transfer calculation.

This unit is certified for hazardous marine zone installation, equipped with tank‑top connection box for gas‑sealed sensor wiring. It transmits temperature measurement data to system SPU processing unit, widely deployed on liquefied gas carriers and offshore floating production vessels.

Main Specifications

• Brand: Kongsberg Maritime; Model: GC‑306‑U1N; Type: Cargo Temperature Unit CTU
• Supported Sensors: Up to 6‑channel Pt‑100 temperature sensors for cargo tank temperature measurement
• Safety Approval: IECEx intrinsically safe certification for marine hazardous area application
• Matching System: K‑Gauge tank gauging system, interfaces with GLK‑300 SPU signal processing unit
• Accessory: Integrated tank‑top connection box providing gas‑tight sealing against tank atmosphere
• Installation: Local cabinet or deck‑side mounting for marine vessel environment
• Power Supply: Marine standard DC power supply for ship‑board automation equipment
• Operating Environment: Marine vessel wide temperature range, high humidity and salt‑fog resistant
• Diagnostic: Built‑in self‑diagnosis for sensor cable break, short‑circuit and hardware fault alarm
• Certifications: IECEx, DNV marine type approval, compliant with custody‑transfer metering requirements

Core Functions

• Collect multi‑point temperature signals from Pt‑100 sensors inside LNG/LPG cargo tanks for accurate cargo thermal profile monitoring.
• Intrinsically‑safe signal conversion for hazardous tank zone, isolating tank‑side sensor circuit from ship‑board control system.
• Gas‑sealed connection box prevents tank vapour leakage at sensor penetration points on tank top deck.
• Transmit processed temperature data to SPU unit for cargo volume calculation, custody transfer and vessel cargo‑monitoring display.
• Continuous cable fault detection to report open‑circuit and short‑circuit of field temperature sensor loops.
• Marine‑grade hardware design adapts to long‑term continuous operation under salt‑fog, vibration and wide‑range ship‑board environmental conditions.

Application Scenarios

• Spare‑part replacement for K‑Gauge tank‑gauging systems on LNG carriers, LPG vessels and offshore floating units.
• Temperature signal conversion component for cargo tank monitoring, custody transfer metering and liquid‑gas cargo‑control systems.
• Maintenance backup inventory for retrofitting and after‑sales service of legacy Kongsberg marine tank‑monitoring equipment.
• Matching CTU unit cooperating with tank Pt‑100 sensors, GLK‑300 SPU and vessel cargo‑monitoring HMI system.
• Retrofit replacement for old CTU units with signal drift, channel failure and connection‑box sealing‑performance degradation faults.
• Global aftermarket spare supply for marine‑automation maintenance teams maintaining Kongsberg K‑Gauge tank‑gauging equipment worldwide