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Tank sounding control, Acon

Alarm Monitoring & Control System (AMCS) · Automation & Control

Class-certified type (DNV register) · technical data sheet not yet verified​​⁠⁠⁠‌‌​​​‌‌⁠​⁠‌⁠⁠​‍

We provide electropneumatic tank equipment, in addition to electronic and radar sensors used for level measuring We will no longer sell this product and it is being phased out. Electropneumatic tank equipment, in addition to electronic and radar sensors, is used for level measuring. We provide electropneumatic tank equipment, in addition to electronic and radar sensors, is used for level measuring. The data is then processed and transferred to the operator stations where the tank information is easily configured and monitored. Our support teams, located worldwide, are committed to helping you manage the vital balance between operational availability and cost. Wherever your vessel is located, our support is close at hand. Get expert help anytime, anywhere—our global support team is available 24/7 to assist you. Upgrade your systems with tailored retrofit solutions to extend vessel life and boost performance. Explore our training programs to build skills, ensure safety, and maximize operational efficiency. Our Global Customer Support works 24/7 to provide prompt responses, technical expertise and global assistance from key locations in 32 countries. EMEA:+47 33 03 24 07APAC:+65 97 11 24 07AMERICAS:+15 04 303 5244E-mail:

Inspection

Inspector Detail

Common issues

  • Sensor drift or inaccurate level readings from condensation, coating buildup or gas density changes affecting radar or electropneumatic transducers
  • Loss of communication between field transmitters and the central control unit from cable faults or corroded junction boxes
  • Float or displacer sticking in electropneumatic tape systems causing frozen or erratic readings
  • Power supply or UPS failures taking the whole gauging loop offline
  • Alarm mapping errors after partial firmware or software upgrades
  • False high-high or low-low alarms from moisture ingress into pressure transmitters
  • Spares and firmware support becoming scarce as Kongsberg phases this generation of hardware out

Inspection checklist

  • Verify each tank level reading against an independent manual sounding or ullage
  • Check transmitter and sensor housings for corrosion, cracked cable glands and water ingress
  • Confirm high level and high-high level alarm setpoints against the cargo or ballast operations manual
  • Test alarm audible and visual annunciation at the control console and remote repeater panels
  • Inspect junction boxes and cable runs for chafing, corrosion and proper gland sealing
  • Verify UPS or battery backup autonomy and charge condition for the gauging system
  • Check calibration records and last calibration date for each tank sensor
  • Confirm software or firmware revision matches the vessel's approved configuration record
  • Function-test the independent overfill alarm where fitted

Service intervals

Sensor and transmitter calibration checkannually or per manufacturer schedule
Alarm function test, all tank alarmsbefore each cargo operation
UPS or battery backup checkannually; batteries typically renewed every 3-5 years
Cable and junction box inspectionannually
Software or firmware revision reviewat each planned maintenance survey

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Critical spares

  • Level transmitter or sensor unit matched to the tank sensing type fitted, radar or electropneumatic
  • Junction box terminal and cable gland kit
  • UPS battery set
  • Local display or repeater unit
  • Alarm relay or interface card
  • Screened marine-grade signal cable

Safety

  • Relying on a single gauging system without independent overfill protection can allow cargo tank overfilling and spillage
  • Pressurised electropneumatic sensing lines - isolate air supply before disconnecting
  • Electrical work on transmitters in hazardous zone areas requires intrinsically safe tools and a valid permit
  • An uncalibrated system can give false confidence - always cross-check against manual sounding before critical operations

Class survey

Class surveyors typically confirm that high-level and independent overfill alarms remain functional and calibrated, and that alarm test records are maintained; on Continuous Survey Machinery the gauging and alarm functions are checked against the vessel's planned maintenance records.

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