optical technology

Working in conjunction with the AquaPlus™ Probe, the new AquaPlus™ system is the only portable Optical DO (Optical DO) system currently available which includes direct EC measurement for accurate salinity compensation. Automatic temperature and barometric pressure compensation are also included.  

By including direct EC measurement, the AquaPlus™ System has also allowed Resistivity (RES), Total Dissolved Solids (TDS) and Seawater Specific Gravity (SSG) to be calculated. These parameters are all displayed on the AquaPlus™ Meter.  

PARAMETERS MEASURED WITH THE AquaPlus™ Probe & DO-200 Meter
√	mg/L Dissolved Oxygen (DO)	√	Absolute EC
√	Electrical Conductivity (EC)	√	Latitude
√	Total Dissolved Solids (TDS)	√	Longitude
√	Resistivity	√	Height above MSL
√	Salinity	√	OSGB Grid Reference
√	Seawater Specific Gravity	√	Time
√	Atmospheric Pressure	√	Date
√	% Saturation DO	√	Temperature

DO-200 features

• lanyard with quick release safety catch for easy hands-free operation
• integral atmospheric pressure sensor for fully automatic correction of Dissolved Oxygen readings
• tough, high impact, IP67 waterproof case with sure-grip rubber gasket, carefully sculpted to fit the hand
• large rubber keypad for ease of use with cold, wet hands or when wearing gloves
• readings can be logged automatically at a pre-determined rate or instantaneously along with calibration data (GLP) by pressing the M+ key
• recalling the data is simple — just press the MR key, then browse your readings using the arrow keys
• integral GPS receiver and antenna for position tagging of readings in either Lat/Long or British Ordnance Survey Grid Reference (OSGB) format
• large, high contrast display for perfect readability, backlit in low light conditions with a soft white light
• for clarity, readings are spread over several easy-to-read screens, each instantly accessible using the left or right arrow keys
• extremely simple multilingual operating system. All setup and calibration functions are accessed via the MENU key and navigated with the four arrow keys. At each level there is a simple choice of OK or ESC
• rugged,waterproof connector for interfacing with the AquaPlus™ Probe or to a PC using the custom USB cable supplied as standard along with Oxilink™software utility

logging data

Logging data is simple. Either set the unit to log at regular intervals, or grab the current readings by hitting the M+ key.

To recall logged data on screen, simply hit the MR key then browse using the arrow keys.

GPS & Oxilink™

The inclusion of GPS in the AquaPlus™ Meter is extremely important for fieldwork. Data collected in the field is meaningless if the locations at which the readings were taken are not accurately known.

With the AquaPlus™ system, up to 2000 sets of readings tagged with time, date and position can be taken, then downloaded from the AquaPlus™ Meter onto a PC using the included USB cable and Oxilink™software utility. Once the data is transferred, Oxilink™ can produce a comprehensive analytical report in text format, or export the logged data to most popular spreadsheets as well as Google™ Maps and Google™Earth, where the readings can be overlaid on either maps or satellite photos.

 

DO-200 SPECIFICATIONS
Dimensions	3.5"W x 7"H x 1.5"D
Weight (including batteries)	15.9 oz (450g)
Display	80 character FSTN LCD with backlight
Data Memory	2000 full sets including GLP data
GPS Receiver	12 channel with integral antenna
GPS Accuracy	+/- 10M in all 3 dimensions
Atmospheric Pressure	150mb-1150mb Accuracy +/- 1mb
Languages	English/French/German
PC Interface	USB (cable provided)
Power Supply	5 x AA cells. Alkaline or Ni-MH rechargeable
Battery Life	Alkaline 20 hours. Ni-MH 40 hours
Operating Temperature	-20°C to +70°C
Protection Class	IP67 (30 mins at 1M)