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Thermistor String shown connected to the Ultra-Rugged Field PC2 for direct readings
Thermistor String shown connected to the Ultra-Rugged Field PC2 for direct readings
Ultra-Rugged Field PC2 (right) showing readings. Close-up screenshot of the ThermArray Software shown on the Ultra-Rugged Field PC2 (left) Close-up of a digital thermistor string node on the ThermArray system

DIGITAL THERMARRAY SYSTEM

CATEGORY > Thermistors + Temperature Systems

DIGITAL THERMARRAY SYSTEM

DESCRIPTION

RST’s Digital ThermArray System provides precision thermal gradient information for geotechnical, geothermal, and marine applications. The main component of the system consists of digital thermal data acquisition nodes distributed along a single cable, typically spaced at uniform intervals. This digital technology allows for many nodes to be placed on one string without greatly increasing the overall cost. Data setup and collection is performed by a stationary data logger system (typically an RST FlexDAQ Datalogger System), a laptop or an Ultra-Rugged Field PC2 for portable readings.

Digital vs Analog

The Digital ThermArray System provides substantial advantages that standard (non-digital) thermistor strings do not:

1) FIXED CABLE DIAMETER

Regardless of the number of nodes required (up to 256 maximum), the digital thermistor string cable will always be at a fixed diameter of 7 mm (19 mm at node points). This cable internally houses 4 wires which serve all nodes throughout the string. Adversely, an analog thermistor string requires 2 wires to service each individual node along the string which thereby increases the overall cable thickness (by two additional wires) per each node added. This drastic increase in wire diameter hinders installation, poses heatsink issues, and escalates overall costs - all of which can be avoided through the implementation of the Digital ThermArray System.

2) ADDRESSABLE NODES

Through the use of digital technology incorporated into each node along the ThermArray System thermistor string, every node can be individually addressed, and simultaneously read through the Ultra Rugged Field PC2 via a single connection. Comparatively, analog versions require the user to physically locate the two wires from each node along the string and then collect a reading. The use of a Digital ThermArray System greatly reduces data collection time and lack of node addressing.

3) NOISE IMMUNITY

Instead of using microvolts, the digital technology used in the ThermArray System makes it extremely immune to noise.

4) POWER EFFICIENCY

The ThermArray System uses less than 10% of the power consumed by analog systems; this is highly advantageous in autonomous datalogging situations.

5) CREDIBLE PERFORMANCE

Overall higher accuracy and resolution is readily achieved with the Digital ThermArray System when compared to analog systems.

QUICK SPECS

Up to 256 nodes on a single, 4-conductor, Kevlar™ reinforced cable.


High accuracy of 0.07°C.


Bussed digital thermistor points.


Optional piezometer(s), conductivity sensor(s) can be positioned along cable length.


Readout using Ultra-Rugged Field PC2 or data acquisition system.


No cable resistance errors.


Minimal conducted heat thermal error.

APPLICATIONS

Provides precision thermal gradient information in geotechnical, geothermal, and marine applications.

BENEFITS

Increase Productivity


High Accuracy


High Reliability

DESCRIPTION

RST’s Digital ThermArray System provides precision thermal gradient information for geotechnical, geothermal, and marine applications. The main component of the system consists of digital thermal data acquisition nodes distributed along a single cable, typically spaced at uniform intervals. This digital technology allows for many nodes to be placed on one string without greatly increasing the overall cost. Data setup and collection is performed by a stationary data logger system (typically an RST FlexDAQ Datalogger System), a laptop or an Ultra-Rugged Field PC2 for portable readings.

Digital vs Analog

The Digital ThermArray System provides substantial advantages that standard (non-digital) thermistor strings do not:

1) FIXED CABLE DIAMETER

Regardless of the number of nodes required (up to 256 maximum), the digital thermistor string cable will always be at a fixed diameter of 7 mm (19 mm at node points). This cable internally houses 4 wires which serve all nodes throughout the string. Adversely, an analog thermistor string requires 2 wires to service each individual node along the string which thereby increases the overall cable thickness (by two additional wires) per each node added. This drastic increase in wire diameter hinders installation, poses heatsink issues, and escalates overall costs - all of which can be avoided through the implementation of the Digital ThermArray System.

2) ADDRESSABLE NODES

Through the use of digital technology incorporated into each node along the ThermArray System thermistor string, every node can be individually addressed, and simultaneously read through the Ultra Rugged Field PC2 via a single connection. Comparatively, analog versions require the user to physically locate the two wires from each node along the string and then collect a reading. The use of a Digital ThermArray System greatly reduces data collection time and lack of node addressing.

3) NOISE IMMUNITY

Instead of using microvolts, the digital technology used in the ThermArray System makes it extremely immune to noise.

4) POWER EFFICIENCY

The ThermArray System uses less than 10% of the power consumed by analog systems; this is highly advantageous in autonomous datalogging situations.

5) CREDIBLE PERFORMANCE

Overall higher accuracy and resolution is readily achieved with the Digital ThermArray System when compared to analog systems.

QUICK SPECS

Up to 256 nodes on a single, 4-conductor, Kevlar™ reinforced cable.


High accuracy of 0.07°C.


Bussed digital thermistor points.


Optional piezometer(s), conductivity sensor(s) can be positioned along cable length.


Readout using Ultra-Rugged Field PC2 or data acquisition system.


No cable resistance errors.


Minimal conducted heat thermal error.

APPLICATIONS

Provides precision thermal gradient information in geotechnical, geothermal, and marine applications.

BENEFITS

Increase Productivity


High Accuracy


High Reliability

NOTE: Images are not shown to size; view specifications for actual diameters. Contact RST for complete details on exact specifications and suitable applications.
Kevlar® is a registered trademark of E.I. duPont de Nemours and Company or its affiliates.

CONTACT US

RST Instruments Ltd.

11545 Kingston Street
Maple Ridge, BC
Canada V2X 0Z5

604-540-1100

1-800-665-5599

Fax: 604-540-1005

info@rstinstruments.com

CONNECT WITH RST

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ASK A QUESTION

CONTACT US

RST Instruments Ltd.

11545 Kingston Street
Maple Ridge, BC
Canada V2X 0Z5

604-540-1100

1-800-665-5599

Fax: 604-540-1005

info@rstinstruments.com



CONNECT WITH RST

Linkedin icon
Youtube icon

ASK A QUESTION

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