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FTS - Model DTS-12 -Digital Turbidity Sensor

FromForest Technology Systems Ltd. (FTS) - an AEM brand

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The marine-capable DTS-12 is the World’s Best Instream Turbidity Sensor. Using true Nephelometric geometry, along with a durable optical face and angled head that sheds bubbles, it provides extremely clean, highly precise data with repeatable, long-term accuracy. The DTS-12 exhibits less than 2% annual optical drift, providing an incredible 12-month recalibration interval. The unique self-cleaning wiper minimizes bio- fouling. These features can typically save 11 site visits per year.

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Set it and forget it. For up to 12 months.

The DTS-12 is the first turbidity sensor to use a laser diode light source, a coherent, narrow, near-infrared spectral beam that provides a constant intensity with virtually no degradation over time.
Unique, self-cleaning, bi-directional design utilizes a back- and-forth motion and two cavities in the face of the sensor that scrape away any fouling twice each time the wiper is activated.
Non-abrasive silicone wiper blade prevents optical face abrasion and cannot be impregnated with sediment or bio-fouling.
Integrated thermal compensation provides very high thermal stability of light source and electronics.
Accurate readings for up to 12 months.

Measures temperature as well as turbidity
Metal components are stainless steel and marine-grade stainless steelO-ring sealed for effective
watertight security
Extended duty cycle wiper motor for years of service
Heavy-duty stainless steel universal joint for wiper mechanism
Thick-walled marine-grade stainless steel

Sensor Type:

Temperature: Encapsulated thermistor
Humidity: Optical nephelometer (sidescatter)
Range: 0 to 1,600 NTU (nominal)

Accuracy (Turbidity)*:

Accuracy (@ 25˚C):

±2% of reading + 0.2 NTU (0-399 NTU)
±4% of reading (400-1,600 NTU)

Resolution: 0.01 NTU
Temp. coefficient (0-40 ˚C): < -0.3% / ˚C
Accuracy (Temperature): ±0.2 ˚C
Supply Voltage Range: 9.6V to 16V
Current Consumption (Typical):

Standby: 0.35 mA
Operating: 50 mA
Motor wiping: 200 mA

Depth Rating: 98 ft. (30m)
Wipe Time: 5 seconds (nominal)
Operating Temperature: +32˚F to 104˚F (0˚C to +40˚C)
Communications Protocol: SDI-12, version 1.3
Measurements Returned: The following are computed from 100 instantaneous samples taken: Mean, Variance, Median, BES, Min, Max, Temperature
Sample Rate: 20 Hz
Dimensions: 12 in. (30.48cm) x 2 in. (5.08cm)
Weight: 23.3 oz (604g)

Cable Options:

Fixed cables: Custom lengths
Connectorized cables: 60 ft (18.3m) / 100 ft (30.5m)

*excluding formazin batch accuracy of ±5%