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Lindorm, Inc.
Lindorm, Inc.
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"Sedimeter sensors designed and
built by Lindorm are a fantastic
tool for measuring water column
turbidity and siltation." (Gravity)

Contact us for price and availability.

4th Generation SediMeters now with turbidimeters, accelerometer, and UV LEDs Mechanical Cleaner Vibrator UV LED
SediMeter SM4A SM4A This is the base model of the 4th generation. Apart from the same OBS array as in the previous SediMeters, the fourth generation also have ISO-style and EPA-style turbidimeters for estimating the concentration of suspended sediment. The sensor diameter is 15 mm over the OBS array, and 20 mm over the turbidimeters. This means that the turbidimeters are located above the holder tube when deployed. The window in front of the turbidimeters is protected from fouling by two UV LEDs. A vibrator helps shake off bubbles, especially useful for calibration. The 3D accelerometer gathers data for measuring inclination (data integrity), for analyzing vibration (indicating strong currents of waves), and finally, to trigger extra measurements in case of strong shaking such as provoked by a turbidity current, or an earthquake. This model has an AAA battery. - Y Y
SediMeter SM4B Special order only This model has the same sensors and UV LEDs as model SM4A, but instead of the vibrator it has the mechanical cleaner of model SM3B. Y - Y
SediMeter SM4C Photo coming soon, now accepting orders The only difference compared to SM4A is the battery size. This version has 5 to 10 times more power available for keeping those UV LEDs blinking, and that means better protection against fouling in front of the turbidimeters. - Y Y
3rd Generation SediMeters Mechanical Cleaner Vibrator UV LED
SediMeter SM3A SM3A Our base model SediMeter. Reports the through-the-bottom turbidity profile with 5 mm resolution over 35 cm, using a combination of straight and oblique backscatter. Also reports backscatter turbidity 11 cm higher up, temperature, and the estimated bed level with 0.01 mm resolution. It can be used both for stand-alone logging, and for real-time monitoring. This is the workhorse, and perfectly adecuate for many applications where no cleaner is necessary. - - -
SediMeter SM3B SediMeter SM3B This SediMeter has a mechanical sensor cleaner that wipes the sensor at user-set intervals. To power the cleaner it has a much larger battery than the SM3A. Y - -
SediMeter SM3C This is identical to SM3A, except that it also has a vibrator for shaking off particles and bubbles. - Y -
Telemetry By license-free radio, or cellular phone
SediLink SediLink radio modem SediLink mounted on a buoy The SediLink radio modem links one or more SediMeters to a PC running the SediMeter software, using a low-power XBee® radio. The maximal range depends on country-specific regulations on frequency and effect.
Also available with buoy. Consider this option when you cannot run a cable, or the distance is too large. XBee radios can also forward the message from SediLink to SediLink, thus extending the total range of the measurement system.
For customers in the U.S. we can also offer a cellular phone option. Contact us for a quote.

Specifications subject to change. Reservation for typos and other errors in the presentation. XBee is a trademark of Digi International, Inc.

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