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Displacement, Crack meter, Joint meter
Tiltmeter or Beam Sensor is used to monitor vertical rotation, deflection, & deformation of diaphragm & retaining walls. Encardio-rite is the world’s leading manufacturer and supplier of affordable, accurate, robust, and reliable tiltmeters, as well as, beam sensors.
DISPLACEMENT, CRACK METER, JOINT METER
Triaxial Crack/Joint Meter
The triaxial joint meters with three vibrating wire displacement sensors, flexible joints and accessories is available for monitoring joint movements in the X, Y & Z directions. A typical configuration using sensor is shown in the picture.
DISPLACEMENT, CRACK METER, JOINT METER
Biaxial Scale Type
This is a biaxial mechanical crack meter with a marking of ±25 mm (x-axis) and ±10 mm (y-axis). It is ideally suited for measuring the change in width of a surface crack to a resolution of 0.5 mm, or shearing.
The biaxial rack meter consists of a graduated scale with a resolution of 0.5 mm and a transparent acrylic plate with a hairline cursor mark. The graduated scale and the transparent acrylic plate is assembled across the crack with expandable anchors in 5 mm diameter holes drilled to a depth of 30 mm as shown in the adjacent figure.
DISPLACEMENT, CRACK METER, JOINT METER
Embedment Joint Meter
This unit is designed to measures movement between joints of concrete blocks in a concrete dam and is suitable for embedment applications. It consists of a plastic housing with a stainless steel flange on one end, and a stainless steel socket on the other. A vibrating wire displacement transducer inside the housing is connected to the stainless steel flange and the socket with flexible joints, to allow small lateral movement.
DISPLACEMENT, CRACK METER, JOINT METER
Potentiometric Type
This unit is a linear displacement transducer which incorporates a potentiometric sensor.
DISPLACEMENT, CRACK METER, JOINT METER
Surface Crack Meter
This crack-joint meter is designed for surface joint measurement and consists of a vibrating wire displacement transducer, fixed between anchors, installed on opposite sides of the crack-joint.
DISPLACEMENT, CRACK METER, JOINT METER
Uniaxial Scale Type
This crack meter is ideally suited for measuring the change in width of a surface crack to a resolution of 0.5 mm. It is integrated with a graduated scale and a transparent acrylic plate with a hairline cursor mark. The assembly when installed across the crack, the graduated scale and cursor move relative to each other depending upon the crack opening or closing.
DISPLACEMENT, CRACK METER, JOINT METER
Uniaxial Bolt Type
This unit is used for monitoring of cracks, joints and fissures. It consists of two stainless steel round datum blocks that are installed on either side of the opening. Each datum block has a groove on the surface along the circumference to assist in taking readings.
A through mounting hole helps mounting the datum block on concrete, masonry or rock surface using expandable anchors. M8 nuts are provided to tighten the expandable anchor. The distance between the grooves of the datum blocks is initially measured by a digital inside caliper with a resolution of 0.01 mm.
DISPLACEMENT, CRACK METER, JOINT METER
Triaxial
The triaxial crack/joint meter is used for surface measurement. Surface crack/joint measurements can be made either on the surface or at locations accessible from galleries (in case of dam).
The triaxial crack/joint meter for surface measurement consists of two precision machined elements attached to reinforce bar anchor stems. The precision elements are made of aluminum and are epoxy painted to make it corrosion proof. The micrometer rest blocks and mounting buttons are of stainless steel.
The measurement is made by anchoring the two elements on either side of the crack/joint and accurately measuring the distance between them over a period of time. The displacement is measured by a micrometer depth gauge of 50 mm range and 0.01 mm resolution.
DISPLACEMENT, CRACK METER, JOINT METER
Vibrating Wire Type
This is a linear displacement transducer integrated with a vibrating wire sensor that converts mechanical displacement to an electrical frequency output. This output can be transmitted over long distances and read or logged by remote digital readout unit or a data acquisition system. The sensor can be used in different other instruments like uniaxial joint meters, triaxial joint meters, crack meters, borehole extensometers, soil extensometers etc.
The sensor is available in the following variants:
- Side cable (suitable for crack gauge)
- Rear cable (suitable for BHE)
- Waterproof