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Mn1600

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

Technical data from manufacturer or class sources · not yet verified by a person​‍‌‌‌‌⁠⁠​‌⁠​‌⁠​​‍​‌​

Crew members and engineers on board various vessels rely on precise surface temperature monitoring to ensure safety and efficiency. Kongsberg Maritime's MN1600 Surface Temperature Sensor offers a reliable solution for these critical measurements. Designed with a Pt100 or Pt1000 sensor element, the MN1600 can operate in temperatures ranging from -50 to 150°C, providing accurate readings across various marine environments. It features a 2, 3, or 4-wire connection and an AISI304 material sensor pipe, ensuring durability. With IP67 protection, this sensor is robust against water and dust, making it suitable for harsh maritime conditions. Its lightweight design at just 150 grams (MN1600SU15) does not compromise on performance, offering a seamless integration into existing systems. For comprehensive support, Kongsberg Maritime provides 24/7 technical assistance and offers retrofit solutions to enhance vessel operations.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Sensor temperature range-50 - 150 °C
Cable temperature range-65 - 155 °C
ProtectionIP67
Weight150 g
Degree of protectionIP67
MN1600 - Surface Temperature SensorWeight : 150 g (MN1600SU15)
MN3085 - Surface Temperature SensorProtection : IP67
MN3238 - Surface Temperature SensorWeight : 125 g (MN3238U15)
BrochureCompany brochure
Inspection

Inspector Detail

Common issues

  • Reading drift or offset developing over time on the sensing element
  • Cable or connector corrosion at the terminal/junction box
  • Loose or degraded surface mounting giving a falsely low reading due to poor thermal contact
  • Moisture ingress at the cable gland leading to intermittent or erratic signals
  • Physical damage to the sensing element from mechanical impact or vibration
  • Intermittent signal from oxidised or loose connector contacts

Inspection checklist

  • Compare the sensor's reading against a calibrated reference thermometer at the same point
  • Check the mounting clamp/bracket for tightness and good thermal contact with the monitored surface
  • Inspect the cable and gland for damage or signs of moisture ingress
  • Check the terminal/junction box for corrosion
  • Verify alarm and trip setpoints in the alarm monitoring system against the class-approved list
  • Check cable routing for chafing or heat damage along its run
  • Confirm the sensor's tag/loop identity matches the alarm system database
  • Verify loop power supply/signal voltage is within specification

Service intervals

Functional check against the alarm monitoring system logquarterly
Calibration verification against a reference instrumentannually, or per the system supplier's recommendation
Terminal box and connector inspectionannually
Cable insulation resistance checkannually

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

Typical wear limits

Reading deviation from a calibrated referencerecalibrate or renew once drift exceeds the sensor's stated accuracy band - confirm the exact figure against the manufacturer's datasheet for this sensor variant rather than assuming a single value across the whole product family

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Complete replacement sensor unit (these are normally exchanged as a unit rather than repaired)
  • Cable gland and connector kit
  • Mounting bracket/clamp
  • Terminal block/junction box hardware
  • Marine-grade signal cable for the run length in use

Safety

  • These sensors are frequently mounted on hot surfaces such as exhaust piping or bearings - burn hazard during replacement
  • Electrically isolate the loop before disconnecting, especially on energised or hazardous-area circuits
  • A miscalibrated sensor on a safety-related loop can trigger a false trip or, worse, mask a genuine alarm condition

Class survey

These sensors form part of the vessel's approved alarm monitoring system; class will normally expect the alarm/trip list, including setpoints for each sensor loop, to be verifiable at survey, and any replacement sensor to be like-for-like or otherwise re-approved with the system supplier.

Estimated lifetime: Surface temperature sensors of this type are generally expected to give many years of continuous service - commonly a decade or more - provided the sensing element and cable remain undamaged; in practice replacement is usually driven by drift or physical/cable damage rather than a running-hours limit.

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