Sperry Gyrocompass Navigat MK2.

Sperry Navigat MK2 Digital Gyrocompass System.

The NAVIGAT X MK 2 digital gyrocompass system provides a cost-effective solution that satisfies the international carriage requirements for a type-approved marine gyrocompass.

The NAVIGAT X MK 2 gyrocompass is a compact, one-unit design that runs on a 24-volt power supply with two independent DC inputs. It can drive up to four analogue repeaters and provides five additional serial data outputs and one six-steps / degree output. Based on the proven Sperry Marine NAVIGAT X MK 1 design, the new gyrocompass provides better than 40,000 hours mean time between failures (MTBF). The system remains north-stabilized for up to three minutes in the event of a power interruption.

The NAVIGAT X MK 2 complies with the International Maritime Organization (IMO) regulations A.424(XI) and A.694(17) as well as the International Standards Organization (ISO) standard 8728, and is fully Wheelmark type-approved.

The introduction of this new gyrocompass completes the Sperry Marine range of heading sensors, which now comprises the NAVIGAT 2100 fiber-optic gyrocompass, the NAVIGAT X MK 1 and NAVIGAT X MK 2 digital gyrocompasses, and the NAVISTAR satellite compass.

Features

• Performance in accordance with IMO A.424(XI), A.694(17) and ISO 8728
• MED (Wheelmark) approval
• Comprises one single unit
• Power supply: two independent 24 VDC inputs
• Control and display unit (not removable) in front cover with 4-digit heading display and six operating keys
• Heading accuracy
  - Static <0.1° secant latitude
  - Dynamic <0.4° secant latitude
  - Settle point error <0.1° secant latitude
• Automatic static north speed error correction - no extra unit required
• Rate-of-turn output
• High speed transmission and follow-up system 100° / sec
• Highly accurate heading data transmission by means of shaft encoder
• Self-aligning repeater compasses with serial interface IEC-61162-1 / RS422
• Gyro system remains north-stabilized during power interruptions of up to three minutes
• Twin rotors (19,000 rev / min) and liquid damping system eliminate latitude error
• A ±180° electronic alignment error correction in setup program (mechanical correction is not necessary)
• High MTBF (40,000 hours)
• Maintenance intervals of 18 months
• Monitoring and alarm functions for all voltages, gyroscope current and follow-up system
• Short maintenance and repair times - low service costs
• Permanent storage of operational data (gyrosphere current, temperature, elapsed operation time)
• Over 250 Sperry Marine service locations worldwide