Temperature String

Measures the temperature profile of a lake, using calibrated digital sensors installed at various depths along a cable.

This product has been field-tested and refined for over 14 years. It features robust strain-relief at each temperature node, reliable SDI-12 communication, and the ability to add pigtail connectors for auxiliary instruments, e.g. dissolved oxygen sensors.

The electronics were redesigned in 2022 to use newer sensor technology with more robust communications. These improvements have resulted in guaranteed accuracy and bulletproof reliability.

Built to your specs

We can build any number of nodes on a single cable -- just tell us where you want them! Minimum spacing is 50 cm between nodes, unless it's an end node, which can be closer.

NIST traceable calibration

Our new and improved sensors are guaranteed to be accurate to within +/-0.1 degree Celsius. Each sensor has a factory calibration that is traceable to NIST standards.

Tough construction

Each node is strain-relieved with extra protection against twisting. We have used durable materials that will last decades. Potted in gel to provide lasting waterproof protection.

Deep tested with long cables

Our customers have used these in waters up to 160 meters deep. In 2022, we redesigned the sensors and circuitry to reliably operate with hundreds of meters of cable.

Price is determined per item, as indicated below. In some cases, additional signal conditioning may be required. Contact Scienterra for a quote.

SDI-12 electronics

$395

Install above the waterline. Reads the digital thermometers in each node, measures and reports the power supply voltage, and responds to the SDI-12 commands from the datalogger.

PUR cable

$12 per meter

Durable in tough conditions. Must include at least 2 meters above waterline. Please specify total length required.

Temperature node

$170

Each temperature node contains a digital thermometer calibrated to 0.1 degrees C. Please specify the depth of each node along the cable.

Auxiliary SDI-12 port

$330 plus cost of connector

Add an extra SDI-12 instrument to the cable at any depth. Please specify the type of connector required.

Terminal temperature node

$190

Includes 316 stainless steel eyelet for anchoring.

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