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Specifications

The G5 is available with a standard or long life battery option.  The Long Life is the same tag but with a slightly larger battery.  Both tags can be fitted with the optional Dive Logging / Saltwater Switch Function.

Unless stated all specifications are the same as the standard G5 Tag.

Key Features

Specification Cefas G5 Cefas G5 Long Life Dive Logging/ Saltwater Switch
Diameter 8 mm 11.5 mm
Length 31 mm 35.5 mm
Weight in Air 2.7 g 5.7 g
Weight in Water 1.3 g 2.25 g
Depths 100, 200, 500, 2000 m (1000 m available on request)
Absolute Max Depth 3000 m
Operating Temperature -2°C to 40°C
Absolute Temp Range -10°C to 70°C
Maximum number of readings 2.031 M at 8 bit resolution with 2MB memory
Battery Life 10 months 24 months
Rate of logging 1 second to 59 minutes 59 seconds
1 minute to 18 hours
Up to 0.1 seconds

 
Additional Specifications

 

Specification Cefas G5 Cefas G5 Long Life Dive Logging/ Saltwater Switch
Physical Parameters      
Casing Polystyrene / Urethane
Real Time Clock      
Temperature Compensated Yes    
Settings User settable
Memory      
Type Flash 1MB / 2 MB
Time series data points 1.036 M / 2.031M at 8 bit resolution
832 k / 1.625 M at 10 bit resolution
693 k / 1.354 M  at 12 bit resolution
Time series data No telescoping    
Time Series Interval 1 second to 59 minutes 59 seconds
1 minute to 18 hours
Up to 0.1 seconds
Delayed Start of Logging yes
Data retention 10 years
Day Log Summary log (9 bytes/day)
Communications rate 115.2 k baud
Other      
Battery Chemistry Silver
Communication Direct Contact
Depth Sensing        
Accuracy ±1% Full Scale at 12 bit ADC
Resolution 100 m sensor Better than 4 cm
200 m sensor Better than 8 cm
500 m sensor Better than 15 cm
1000 m better than 30 cm
2000 m sensor Better than 60 cm
Temperature Compensated3 Yes 2°C to 34°C
Maximum depth before pressure sensor failure 1.5 X FS
Temp Sensing      
Accuracy ±0.1°C at 12 bit ADC Range3 -2°C to 34°C
Resolution 0.03125°C
Response Time 4 28 sec
Required Peripherals      
Reader Connected via serial port
Data Output CSV format (MS Excel etc.)
Software G5 Host – Windows OS

Notes

  1. Under normal operating conditions and single deployment with 1MB memory fill
  2. Optional depth sensing ranges available
  3. Accuracy and resolution degrades outside this range.
  4. Time to reach 66% of step from 5 to 30 degrees