Vibrating wire Jointmeter

Displacement Transducer Model IG-1002

Innovative displacement transducer model IG-1002 is ideal for use in single and mutipoint bore hole extensometers. Its unique slimline design is very convenient for multipoint bore hole extensometers as a number of sensors may be installed within a single hole. The sensor also finds application in Jointmeters, soil extensometers and roof convergence measurement. It may even be used in perimetric joint meters.

SPECIFICATIONS :

Standard Ranges	50mm, 100 mm , 150mm.
Non-linearity %fs	1%fs
Material (Outer Body)	Stainless steel
Operating Temperature	-10 to 50°C
Coil Resistance	140 – 160 Ohm @ 25°C
Thermistor	YSI 44005 or equivalent (3k Ohm @ 25°C)
Dimension	16 mm dia
Cable	1m, 4 core shielded.

a) Vibrating Wire Jointmeter (Pull out type)

b) Vibrating Wire Jointmeter / Crack meter Model IG-2002 (Push –in Type)

The model IG2002 crackmeter consists of a spring loaded, compression type vibrating wire displacement transducer and two installation brackets. One mounting bracket supports the displacement transducer while the other is anchored across the joint on to the reference surface. The spring-loaded shaft of the displacement transducer is always in contact with the reference surface at the other side of the crack. The sliding rod senses the movement between the two anchors and gives a frequency output which is read by the indicator.

For measurement in three orthogonal directions IG2002XYZ or perimetric joint meter is used. This version has three sets of displacement transducer assemblies installed across the crack in three mutually perpendicular directions. Free movement of the sliding shaft in all directions ensures accuracy of measurement.

SPECIFICATIONS :

Standard Ranges	50mm, 100 mm , 150mm.
Non-linearity %fs	1%fs
Material (Outer Body)	Stainless steel
Operating Temperature	-10 to 60°C
Coil Resistance	140 – 160 Ohm @ 25°C
Thermistor	YSI 44005 or equivalent (3k Ohm @ 25°C)
Dimension	20 mm dia
Cable	1m, 4 core shielded.