BD-200PT
Autronica BD-200PT — Heat detection - high-temperature heat detector.
Inspector Detail
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Common issues
- False alarms from dust, condensation or paint overspray contaminating the sensor
- Sensor drift over time reducing sensitivity to a genuine temperature rise
- Loop wiring faults - loose terminals, chafed cable, or corrosion at the base
- Address/zone mismatch after panel programming changes or detector replacement
- Physical damage or discoloration from nearby heat sources unrelated to fire
- Delayed response where the detector is mounted too far from the likely heat source
Inspection checklist
- Functional test using the maker's approved heat/test method
- Visual check for physical damage, discoloration or contamination
- Check loop wiring insulation resistance and terminal tightness
- Verify the detector's address/zone matches the panel's fire zone plan
- Confirm mounting location is clear of obstructions and airflow that could delay detection
- Check the fire panel registers the correct zone and address on test
- Confirm response is logged and alarm/output relays operate as designed
Service intervals
| Functional test | per the vessel's planned maintenance system, typically every 6-12 months and at minimum annually to align with SOLAS/class requirements |
| Visual inspection | as part of routine fire rounds |
| Cleaning | as needed based on the space's dust/contamination level |
| Loop wiring insulation check | annually or after any related electrical work |
Typical wear limits
| Sensitivity/response threshold | no mechanical wear limit applies to this device; sensitivity drift should be checked against the panel's built-in test/calibration function per Autronica's interval, not estimated visually |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Replacement heat detector head
- Detector base/mounting plate
- Loop isolator module
- Spare loop cable for local repair
Safety
- An untested or contaminated detector may fail to alarm in a genuine fire - functional testing is safety-critical, not optional
- This is a high-temperature variant typically mounted near hot machinery (e.g. exhaust, boiler space) - confirm the detector's rated range matches the space before assuming a fault
- Isolate the loop or work per the panel maker's live-testing procedure to avoid a false general alarm during servicing
Class survey
Fire detection systems fall under SOLAS II-2 requirements; class review of the fire detection and alarm system certificate checks that functional test records exist for the detectors on the zone plan and that any replaced detector matches the type approved for that space.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual inspection of detector exterior and lens/chamber areas; vacuum cleaning with brush attachment for light dust, cloth with mild detergent solution for housing
Visual verification of transparency and clarity of optical elements; test flame detector coverage and range verification using coverage verification systems
Verify removal of all dust caps and construction covers; inspect for debris or paint spray coverage; clean detector chambers if contaminated before returning to service
Verify correct voltage (10-27 VDC typical), test communication signals to fire panel, verify no loose connections or corrosion at terminals
Verify automatic daily self-test execution (24-hour cycle), confirm alarm panel receives SelfVerify status reports, check that sensitivity is within listed parameters
Type-general inspection and maintenance points for this equipment category — not model-specific.
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