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France
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Animal Monitoring

Ultra-Light Logger

LUL "Logger Ultra Léger" - Ultra Light Logger

The LUL is the tiniest bio-logger of the family. While measuring temperature, light and pressure every minute, it provides a 1,5 years life time for a total weight (including batteries and casing) of just 2,0 grams. Casing is customizable according to the intended use (biocompatible casing for implantation or pressure resistant for deep diving use); the size and nature of batteries can be adapted to the application and the temperature conditions.

Specifications

General
Sampling period: from 1sec to 24h
A/D conversion: 14-16 bits
Memory size: 64 MB
Programmable start delay: from 1 min to 1 year
Operating temperature: -40°C to +70°C

Temperature measurement
Range : -35°C to 65°C
Precision: +/-0,5°C
Resolution: 0,02°C
Time constant in water with standard casing: 17sec.

Pressure measurement
Depth range in water: 50m or 300m, precision: +/-5cm or +/-30cm.
Altitude range in air: 0 to 5000m, resolution 40cm at seal level

Light measurement
0,045 to 188 000 lux

Physical dimensions
Electronics size: 16 x 8 x 4mm3
Electronics weight: 0,76g

 

Configuration example:
Pressure + Temperature + Light measured every minute, with 19mAh battery >> Life time 1,5 years for 2,0g total weight

 

Low temperature LUL version, with battery for long term operation at -35°C

Low temperature operation requires a special battery, which doesn't exist in ultra-small weight and dimensions

 

 

 

 

 

 

 

 

Scale: 1 mm graph paper in background

 

Battery: 17 x 15 x 7mm3   5,0 grams

LUL with battery and casing: 22 x 21 x 15mm3   7,7 grams (see pictures).

Lifetime of loggers versus acquisition periods for: Pressure P, temperature T and light L (examples):
PTL = 1", 10", 10" > 320 days (10 months)
PTL = 2", 10", 10" > 550 days (1,5 years)
PTL = 4", 10", 10" > 860 days (3,2 years)

 

*When >-15°C operation is convenient, another battery technology can be used, thus reducing weight and size of the logger. Please contact us for discussion.

*Casing is designed on demand.