Precision Measurement Engineering, Inc. Temperature String T-Chain

The T-Chain is used as a water quality monitoring and lake management device that collects water column temperature, dissolved oxygen, PAR, pressure, chlorophyll a, and conductivity measurements. T-Chains are currently being used to monitor lake and reservoir thermocline and stratification, detect dissolved oxyen fluctuations, observe internal waves, collect data under ice, discover plumes, observe upwelling and eddies, record lake turnover and more. The T-Chain is also used in marine environments. The T-Chain is a temperature string designed to collect temperature, dissolved oxygen and pressure measurements as rapidly as once per second along a customer specified node location cable. This temperature string (T-Chain) is unique due to its very high temperature accuracy and rapid response to temperature variations. It often finds application in connection with numerical model validations as well as routine monitoring. The temperature string (T-Chain) consists of a single polyurethane sheathed cable with a Kevlar core. This cable carries digital-format data from the various sensors. Temperature sensors are permanently molded onto the cable but dissolved oxygen and pressure sensors are attached via underwater connectors. The number and type of sensors, length of cable, and other parameters are defined by the customer subject to the temperature string design rules. Each chain is custom assembled depending upon the customer's specific requirements.