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miniCTD DR – Direct Reading CTD

The miniCTD – DR is an adaptation of the miniCTD. It has been optimised for ROV operations with a direct reading interface only and no internal battery or logging capability.

It provides a simple, cost-effective tool for the collection of CTD Profiles, without compromising the quality of the data.

Support

miniCTD DR Datasheet
MiniCTD DR Operating Manual
DataLog X2 Operating Manual

Software

DataLog X2
1.1.0.1315

Technical Specifications

Sensors

The miniCTD - DR is fitted with Valeport’s unique digital, high stability conductivity sensor, a PRT temperature sensor, and strain gauge pressure transducer. In addition to the measured parameters listed, Salinity and Density values are also calculated by the software.

Conductivity

Range
0 - 80 mS/cm
Resolution
0.001mS/cm
Accuracy
±0.01mS/cm

Temperature

Range
-5°C - +35°C
Resolution
0.001°C
Accuracy
±0.01°C

Pressure

Range
10, 20, 30, 50, 100, 300, 400 or 600 Bar
Resolution
0.001% range
Accuracy
±0.05% range

Data Acquisition

Features a selection of pre-programmed sampling regimes, covering many standard applications. Data may be sampled from 1 to 8Hz, making it suitable for rapid profiling or for continuous measurement at a fixed point.

Sampling Modes

Continuous
Regular output from all sensors at 1, 2, 4 or 8Hz
Profile
Logs data as the device falls (or rises) by a defined amount
through the water column

Communications

Operates autonomously, with setup and data extraction performed by direct communications with PC. Also operates in real time, with a choice of communication protocols fitted as standard and selected by pin choice on the output connector:

RS232
Up to 200m cable, direct to serial port
RS485
Up to 1000m cable
Baud Rate
38400 - 460800
Protocol
8 data bits, 1 stop bit, No parity, No flow control
Bluetooth
Bluetooth logger and communication set are available for cable free data recovery (500m rated)

Memory

Fitted with a solid-state, non-volatile Flash memory, storing over 10 million lines of data (equivalent to 10,000 profiles to 500m at 1m profile resolution).

Electrical

External
9 – 28V DC
Power
<250mW
Connector
SubConn MCBH10F

Software

Supplied with DataLog X2 PC software, for instrument setup, data extraction and display. DataLog X2 is licence free.

Physical

Materials
Acetal or Titanium housing (as ordered), Polyurethane and ceramic sensor components,
Stainless steel (316) deployment cage
Depth Rating
500m (Acetal) and 6000m (Titanium)
Note: Maximum deployment depth may be limited by transducer range
Instrument Size
Main Housing 48mmØ
Sensor Body 54mmØ
Length 370mm (including connector)
Deployment Cage
110mmØ x 450mm long
Weight
1kg (Acetal)
1.8kg (Titanium)
Shipping
51 x 42 x 27cm, 10kg

Ordering

0660024-XX
Direct Reading miniCTD – Titanium, 6000m rated
Fitted with:
• Pressure Balanced Conductivity cell
• 0.01%FS pressure sensor and PRT sensor
Supplied with: Deployment Frame, Pigtail / Interface lead,
Operating Manual and system Transit Case
0660037-XX
Direct Reading miniCTD – Titanium, 6000m rated
Fitted with:
• Pressure Balanced Conductivity cell
• 0.05%FS pressure sensor and PRT sensor
Supplied with: Deployment Frame, Pigtail / Interface lead,
Operating Manual and system Transit Case
Note
XX denotes pressure transducer range:
Titanium: select from 10, 20, 30, 50, 100, 300, 400 or 600 bar

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