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Electrical Crack Meter
Electrical Crack Meter
Vibrating Wire Crack Meter 3-D Crack Meter

CRACK METER

CATEGORY > Extensometers + Compressometers

CRACK METER

DESCRIPTION

RST’s Crack Meters are designed to measure movement across surface cracks and joints. Crack Meters are available as Electrical, 3-D and Vibrating Wire.

The Electrical Crack Meter consists of a moveable slider that makes electrical contact along a fixed resistance strip. A regulated DC voltage is applied to the two ends of the resistance strip and the voltage is measured between the slider and one of the end points.

3-D Crack Meters may be read manually, or equipped with a vibrating wire transducer for automated monitoring.

Vibrating Wire Crack Meters are easily installed by grouting, bolting or bonding the two threaded anchors (with ball joints) on either side of the crack/joint, and then reattaching the anchors to the sensor.

Submersible (up to 200 m) versions are available for installation on the upstream perimeter joint of CFRD dams. 2-D and 3-D versions are available.

QUICK SPECS

Rugged & reliable construction.


High accuracy and readability.


Full performance in hostile site conditions.


Versatile.


Low-cost.


Long-term stability.

APPLICATIONS

Monitor crack separation or convergence, in concrete structures.


Monitor joints for movement caused by nearby geotechnical activity.


Alarm triggering when separation or convergence, of two reference points, reach a preset critical rate or value.

BENEFITS

Increase Productivity


Quick Delivery


High Accuracy


High Reliability

DESCRIPTION

RST’s Crack Meters are designed to measure movement across surface cracks and joints. Crack Meters are available as Electrical, 3-D and Vibrating Wire.

The Electrical Crack Meter consists of a moveable slider that makes electrical contact along a fixed resistance strip. A regulated DC voltage is applied to the two ends of the resistance strip and the voltage is measured between the slider and one of the end points.

3-D Crack Meters may be read manually, or equipped with a vibrating wire transducer for automated monitoring.

Vibrating Wire Crack Meters are easily installed by grouting, bolting or bonding the two threaded anchors (with ball joints) on either side of the crack/joint, and then reattaching the anchors to the sensor.

Submersible (up to 200 m) versions are available for installation on the upstream perimeter joint of CFRD dams. 2-D and 3-D versions are available.

QUICK SPECS

Rugged & reliable construction.


High accuracy and readability.


Full performance in hostile site conditions.


Versatile.


Low-cost.


Long-term stability.

APPLICATIONS

Monitor crack separation or convergence, in concrete structures.


Monitor joints for movement caused by nearby geotechnical activity.


Alarm triggering when separation or convergence, of two reference points, reach a preset critical rate or value.

BENEFITS

Increase Productivity


Quick Delivery


High Accuracy


High Reliability

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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