T-Node Troubleshooting

    Symptom Possible Cause Corrective Action Temperature data is displayed as a value between -99999 and -100001 Leakage into a connector  Check each underwater connection for flooding String disconnected (or severed cable) Check the physical setup and condition of the temp string Temperature Readings appear as 85°C Temp string power cut off, not supplied, or shorted […]

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    Attaching T-Node Sensors to a Mooring Line

    Temperature strings are frequently attached to mooring lines to keep them fixed in place vertically within a water column. This technique helps to ensure that temperature data is consistently being monitored at desired depths. To mount the T-Node sensors to a mooring line, T-clamp sensor mooring clamps, cable ties and a mooring line will be […]

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    Connecting T-Node to iSIC Data Logger

    T-Node sensors can be connected to any iSIC data logger using the 1-Wire UW to MS8 Adapter.     First plug the temperature string into the adapter’s UW connector. Then attach the MS8 connector from the adapter to the mating MS8 port on the iSIC enclosure.     REV: 13H08  

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    Connecting T-Node to SDL500

    UW underwater connectors provide a plug-and-play interface for connection to NexSens SDL500 Submersible Data Loggers. The SDL500 sensor bulkhead includes sensor connection ports identified as T, P1, P0, A and D.   For temperature strings that have less than 14 T-Node temperature elements and/or a total temperature string length less than 15 meters, connect to […]

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    T-Node Temperature String Assembly

    Single-Point Temperature String Assembly Single-point strings are used to determine water temperature at one location, typically at the surface. To assemble a single-point temperature string, first connect the male UW plug connector on the T-Node to the female UW receptacle connector on an Underwater Cable.     Then connect the supplied UW underwater plug to […]

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    T-Node Calibration Information

    Calibration Records Each T-Node uses a bandgap-based digital temperature sensor subject to a precision factory calibration for NIST (National Institute of Standards and Technology) traceable temperature measurements. Calibration data remains stored at the factory and is presented to the end-user in the form of a calibration card provided with each temperature sensor. Records can be […]

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    T-Node Specifications

    Specifications   Length 5.3 in (134.6 mm) Diameter (OD) 1.4 in (35.6 mm) Weight 0.3 lbs Housing Acetal CopolymerPolyvinylchloride (PVC) Operating Temp Range -25 to 75ºC Operating Depth Range 100 m Sensor Capacity 50 nodes Output 1-Wire sensorBUS Signals SDI-12, RS-485 Power Requirements Voltage: 3.5 to 5.75 VDC Power Consumption processing: 4 mA idle: <1 […]

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    T-Node What’s Included & Common Accessories

    Each T-Node Water Temperature Sensor includes a certificate of calibration card. UW underwater plugs are also included as required for terminating temperature strings. Common Accessories Part Number Description Details UW Underwater cable Used for assembling T-Node temperature strings, various lengths available UW-A Underwater armored cables Underwater cables with anti-chafing armor T-Boost 1-Wire signal booster Used […]

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    T-Node Overview

    The NexSens T-Node water temperature sensor utilizes a digital sensor secured in a protective housing for underwater deployments in fresh, brackish, or seawater. The sensors can be connected in series using UW underwater cables and suspended vertically in a water column or horizontally along a stream or riverbed. Double o-rings (both gland and face seals) […]

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    Re-detecting a T-Node String

    If a T-Node string is altered, the sensors must be re-detected before the iSIC is reprogrammed. This is because when the iSIC is being programmed, it checks that the attached T-Node string matches what was detected earlier. Note: These steps will require the data logger to be reprogrammed, which will erase all data currently on […]

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