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Phone: +86 16626708626Description
Key Technical Specifications
- Type: Microprocessor-controlled digital gyrocompass system
- Heading display: 4-digit digital display
- Follow-up rate: 100°/sec
- Settling time: < 3 hours
- Operating temperature: -10°C to +55°C
- Storage temperature: -25°C to +70°C
- Power input: 24 V emergency power changeover; AC supply per ship installation
- Outputs: 7 independent RS 422 serial outputs
- Repeaters: Drives up to 12 analogue repeaters
- Dimensions: 404 mm W x 520 mm H x 420 mm D
- Weight: 25 kg to 28 kg depending on version
- MTBF: 40,000 hours
Product Introduction
Sperry Marine NAVIGAT X MK 1 is a microprocessor-controlled marine gyrocompass used for ship heading reference, rudder feedback, and navigation data output. It fits bridge systems that need stable heading data, rate-of-turn output, and repeaters.
Buyers choose it when they need a proven single-unit gyrocompass with serial outputs, emergency power changeover, and long service intervals. Verify ship wiring, repeater count, and version compatibility before installation.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No heading display at power-up | No input power, blown fuse, or failed PSU | ❌ Low | Measure supply voltage at the unit terminals with a multimeter; check ship fuses and breaker status | Check power path before replacing the gyrocompass |
| Heading drifts or will not settle | Gyrosphere wear, incorrect leveling, or installation issue | ✅ High | Review tilt/level setup, confirm ship motion is within normal limits, inspect maintenance history | If leveling and power are correct, the unit may need service or replacement |
| ERR or alarm output active | Internal fault, sensor issue, or startup sequence incomplete | ✅ High | Read alarm status, check boot sequence, and confirm output wiring to alarm panel | Capture alarm codes and test logs before swap-out |
| No data on repeater or serial output | Wiring fault, protocol mismatch, or loose terminal connection | ❌ Medium | Check RS 422 wiring polarity, terminal tightness, and repeater input settings | Verify interface settings before blaming the gyro unit |
| Repeater compasses disagree by a fixed offset | Alignment error or configuration mismatch | ✅ High | Compare displayed heading against known reference and inspect alignment setup | Re-run alignment procedure and confirm setup values |
| Power failure alarm trips during transfer | Emergency supply issue or battery/transfer fault | ❌ Low | Measure 24 V emergency supply and verify automatic changeover circuit | Fix the supply circuit first; the gyro may be fine |
If you are stuck, send photos of the terminals, alarm display, wiring diagram, and diagnostic logs to technical support.
- NAVIGAT X MK -1
Frequently Asked Questions
Q: Is the NAVIGAT X MK 1 still a current model?
A: It is an older marine gyrocompass design, so availability usually depends on surplus stock or refurbished inventory. For shipboard retrofits, buyers usually care more about exact version match than catalog age.
Q: Can I replace my existing NAVIGAT X MK 1 with this directly?
A: Often yes, but only if the wiring, repeater load, supply voltage, and interface configuration match your vessel setup. Do not assume the terminal layout or setup values are identical across every revision.
Q: Does it keep heading data during a short power loss?
A: The platform is designed for north stabilization during short outages, but your actual result depends on the installed configuration and emergency power arrangement. Check the ship’s transfer circuit before relying on it operationally.
Q: Is this hot-swappable?
A: No. Treat it like a critical navigation unit, not a plug-and-play office device. Kill power, lock out the circuit, and document the wiring before removal.
Q: What condition do you usually sell it in?
A: New surplus or tested used stock, depending on the lot. If it is refurbished, it should be described as tested with a defined QC report, not just “working.”
Q: Why is surplus cheaper than factory new?
A: Usually because it comes from overstock, canceled projects, or recovered inventory. Lower price does not mean lower value, but it does mean you should ask for test records, serial numbers, and photos.
Q: What should I confirm before ordering?
A: Confirm serial interface, repeater count, supply requirements, mounting dimensions, and whether your vessel needs a specific mod or revision. A 10-minute check here usually prevents a two-day install delay.
