C3 SEAPOINT OEM Turbidity Meter
The SEAPOINT OEM Turbidity Meter is a sensor that measures turbidity by detecting
scattered light from suspended particles in water. Its small size, very low power
consumption, high sensitivity, wide dynamic range and 6000-meter depth capability
allow this sensor to be used in most applications where turbidity or suspended particle
concentrations are to be measured. The sensor is also insensitive to ambient light when
underwater and has a very low temperature coefficient. The SEAPOINT Turbidity
Meter senses scattered light from a small volume within 5 centimetres of the sensor
windows. Confining the sensing volume allows the sensor to be calibrated in relatively
small water containers without errors from surface and wall reflections. It also allows
the sensor to be used in tight spaces such as crowded instrumentation packages, pipes
and shallow streams. Each sensor is factory calibrated using formazine Turbidity
Standard. The user may also calibrate the sensor with particles of interest to measure
their suspended concentrations. The SEAPOINT Turbidity Meter is constructed from
rugged, corrosion-free materials and quality surface mount electronic components for
durability and high reliability (read more on the SEAPOINT Operator’s Manual).
C3.1 CONFIGURATION
The following parameters are requested to properly set up the SEAPOINT STM Turbidity Meter.
The sensor setup sequence can be run using the CNAP command available under the CONF menu
Logical code [0..255]:24
Description :Turb
Significant digits [1..13]:6
Digits after the dot [0..9]:2
Do you want to store it ?:Yes
Do you want to show data ?:Yes
Data processing method
0)Counts,1)mV,2)Custom&UNESCO,3)Polynomial,4)a+bx
Method [0..4]:2
Mux[0..7,240=A.Board,255=NU]:0
Compensate thermal drift ?:No
Turbidity with multiple measuring scales ?:Yes
STM scales:1)>750,2)500,3)125,4)25 [FTU]
Startup scale [1..4]:1
Enable automatic scale selection ?:Yes
C3.2 CALIBRATION
The STM sensor is calibrated by entering an offset and slope for each measuring range. The procedure
can be run starting from the CASE command available under the CALB menu.
• Measuring scale 1, Full scale [>750 FTU or 1500FTU]
• Measuring scale 2, Full scale [500 FTU]
• Measuring scale 3, Full scale [125FTU]
• Measuring scale 4, Full scale [25 FTU]
measuring scale 1, Full scale [>750 FTU]
Do you already know 'SLOPE & OFFSET' coefficients ?:No type [Y]es or [N]o < y
Offset:0
Slope:0 enter new value< 1
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