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CTD-F has become the central hub of all CTG towed vehicle systems, as well as finding applications on underway flow through systems such as CTG AquaLine Ferrybox System, when used in conjunction with its flow through manifold.

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Specification 

  Datasheet (pdf) Fact Sheet (pdf)       

Download GUI Software
(Version 3.01.09 - Pt No 921078681)

 

Applications

Features

- High performance monitoring of oceans, rivers, lakes and estuaries

- Intelligent host for multi-parameter systems

- Designed for towed vehicles, moorings
and profiling

- Pollution monitoring

- Dye plume tracking

- Flow through version available for AquaLine FerryBox and process applications (download pdf).
.

- On-board conductivity, temperature, depth and fluorescence

- Compact and high performance

- SmartMediaTM card memory gives high capacity

- Internal batteries or externally powered

- Real time data acquisition option

- Output in engineering units

- Fluorescence options of chlorophyll-a, turbidity, rhodamine, amido rhodamine, fluorescein, Phycoerythrin or phycocyanin

- Programmable power switching for external devices

Product Description

 

MINIpack is a low cost, compact, robust and fully integrated CTD-F sensor suite designed to meet the demands of open ocean, estuarine and fresh water environmental monitoring, incorporating a 24 channel data logger.

MINIpack is designed to be a multi-parameter sensor data logger that can be deployed individually or as the core of a larger multi-parameter system. As such, it may be used as a discrete profiling instrument, installed on a data buoy, moored in the ocean or to form  the core of a towed undulating vehicle system. It has been designed specifically for easy installation into the Chelsea Technologies Group range of towed vehicles.

This compact instrument contains a fluorimeter, conductivity, temperature and depth sensor. These sensors are coupled to a high performance data logger. For real time applications, the MINIpack is provided with a transmission system with the capability of providing power to and acquiring data from up to 16 external sensors (14 differential channels & 2 single ended channels). These may typically include dissolved oxygen, pH, PAR, up & downwelling sensors, fluorimeters &  transmissometers. A titanium / acetal housing contains all on-board sensors, processing boards, data transmission or internal batteries.
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The highly versatile SmartMediaTM is used for pre-programming and storing of measured data. This data is easily extracted by a PC and presents data in ASCII files in engineering units, which are easily processed by propriety software packages. Data may be stored on the internal SmartMediaTM Card (for standalone mode) or transmitted in real-time up the cable using RS422 (RS232 option) format. An interface unit is available to convert RS422 (or RS232) for onward transmission to a PC. A user-friendly Windows based GUI enables error free programming of the internal logger and data extraction. 

Flow Through Manifold is now available - this is designed to convert the MINIpack from an in-situ CTD-F sensor suite to a flow through version for Ferrybox and process control applications.

Flow Through Manifold is now available - this is designed to convert the MINIpack from an in-situ CTD-F sensor suite to a flow through version for Ferrybox and process control applications.
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A special cage was recently designed to protect the MINIpack as it was deployed through ice.

A special cage has been designed to protect the MINIpack  for deployment through the ice in Antarctic.   An internal lithium battery & removable SmartMedia card means that the MINIpack has no external connectors – ideal for such a rugged environment.

 

Specification
    GENERAL 

Size:

114 mm dia. x 200 mm (sensors to end cap)

Weight:

3.25 kg (in air); 1.8kg (in water)

Depth rating:

600m

External input: 

18 to 72VDC (via interface unit)
10 to 15VDC (external battery)

Material: 

Titanium / Acetal

  DATA TRANSMISSION  

Type:

RS422 (RS232 option)

Data rate:

9600 baud

Scan rate: 

1 Hz to 1 sample/day

Sample period:

1 sec to 1 day

Sampling interval: 

1 sec to 1 day

 DATA LOGGER  

Capacity: 

16Mbyte Storage Card (SmartMediaTM)

No of readings: 

100,000 records of all 24 channels

 INTERNAL SENSORS  

Type

Range 

Accuracy 

Resolution

Conductivity 

Induction Cell

0-70 mmhos/cm

0.005 mmhos/cm

0.001 mmhos/cm

Temperature 

Pt resistance

-2 to +35 oC

0.003 oC

0.0005 oC

Pressure 

Strain gauge with temp compensation

0-600dbar

0.2dbar 

0.01dbar 

Fluorimeter

Excitation 
Wavelength:

Emission
Wavelength:

Concentration 
range:

Resolution:

Chlorophyll-a

470/30nm

685/30nm

0.03-100µg/l

0.01µg/l

Chlorophyll-a

430/30nm

685/30nm

0.03-100µg/l

0.01µg/l

Rhodamine

470/30nm

590/45nm

0.03-100µg/l

0.01µg/l

Amido Rhodamine

425/30nm

550/30nm

0.04-200µg/l

0.025µg/l

Fluorescein

480/80nm

530/30nm

0.03-100µg/l

0.01µg/l

Nephelometer

470/30nm

470/30nm

0.04-100FTU

0.01FTU

Phycoerythrin

530/30nm

580/30nm

0.03-100µg/l

0.01µg/l

Phycocyanin

590/35nm

645/35nm

0.03-100µg/l

0.01µg/l

In view of our continual improvement, the designs and specifications of our products may vary from those described. 

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