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7
2
Technical Specification
General
There are four CTD-Diver models with different pressure ranges for pressure, temperature and
conductivity measurements. The table below lists the general specifications of the CTD-Diver.
Diameter
Ø 22 mm
Length (incl. suspension
eye)
~ 135 mm
Weight
~ 95 grams
Materials
Casing
Ceramic (zirconia ZrO
2
)
Pressure sensor
Piezoresistive ceramic (alumina Al
2
O
3
)
Conductivity sensor 4-electrode with platinum electrodes
Suspension eye
nose cone
Nylon PA6 glass fiber reinforced (30%)
ABS
O-rings
Viton®
Communication
Interface
Optically separated
Protocol
Serial RS232, a limited set of commands is available as specified in Appendix
II
Memory capacity
288,000 measurements
working
144,000 measurements
backup
144,000 measurements
Memory
Non-volatile memory. A measurement consists of date/time, pressure,
temperature, and conductivity
Continuous and fixed length memory
Battery life*
Up to 10 years, depending on use
Theoretical battery
capacity
2 million measur 1000× full memory re
2000× programming
Clock accuracy
Better than ± 1 minute per year at 25
C
Better than ± 5 minutes per year within the operating temperature range
CE marking
EMC in accordance with the 89/336/EEC directive
Basic EN 61000-4-2 standard
Emissions
EN 55022 (1998) + A1 (2000) + A2 (2003), Class B
Immunity
EN 55024 (1998) + A1 (2000) + A2 (2003)
Summary of Contents for CTD-Diver DI28 Series
Page 1: ...CTD Diver DI28x Series...
