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Vibrating Wire Arc Weldable Strain Gauge

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Used for measuring strain in steel members the strain gauge can be arc welded to steel structures such as piles, load bearing beams and columns, struts and bridges. It can also be applied to sheet pile walling, reinforcement bars, tunnel linings and suspension bars.

The physical changes measured by the sensor result in small changes to the position of the movable point which results in a change to the tension of the wire.

The Vibrating Wire Arc Weldable Strain Gauge measures strain in steel members. It consists of a coil assembly, Vibrating Wire element and two weldable anchors. The Strain Gauge incorporates O-ring seals to provide waterproofing, and allows the tube to remain unstressed. A factory fitted, four-core screened cable connects the coil to the readout unit.

The sensor is installed by removing the two mounting blocks and placing them (using a setting bar as a template) onto the steel to be monitored and then arc welding them in place.

Product Features:

• Suitable for manual or remote reading
• Range is adjustable to suit compression or tension
• Contains an integral thermistor
• O-ring seals provide waterproofing

Once the welds have cooled, the gauge is fitted into the blocks and tensioned as necessary. The pick-up coil is then slid into place and secured with cable ties.Changes in strain are monitored by the coil assembly mounted on the gauge. The gauges can be read individually or remotely/automatically as part of a data collection system.

Ordering Information:

Arc-Weldable Vibrating Wire Strain Gauge
3000μ strain range. Includes sensor with thermistor, 2No Mounting Blocks. Installation tool ST2-2.1 required for installation.

ST2-1.1 Sensor with specified cable length. Cable CA3.1-4-IC to be ordered separately
ST2-1.2 Sensor with 3 metre cable length
ST2-1.3 Sensor with 10 metre cable length
ST2-1.4 Sensor with 25 metre cable length
ST2-1.5 Protective thermal cover

Installation Tools
One tool required for multiple installations
ST2-2.1 Installation Kit. Includes setting jig & spacer. Only one required.

Connecting Cable and Fittings
CA-3.1-4-IC Instrument cable, 4 core, 7/0.20, screened. Price per metre, polyurethane jacket
CA-4.1 Joint sealing kit
CA-4.2 Coloured adhesive tapes. Set of 10No
CA-4.3 Crimping tool
CA-4.4 Crimping sleeves. Set of 100No
W6-6.1 Nylon ties. Price each, 150mm x 3.5mm. Pack of 100No.
ST1-3.5 Nylon ties. Price each, 370mm x 4.7mm. Pack of 100No

Installation Accessories
ST2-3.1 Spare mounting block set. Set of 2No blocks for 1No instrument

Manual
MAN-175 Vibrating wire arc weldable strain gauge