NDT Structural Inspection & Monitoring

BS 1881:206
Digital deflection measuring system for suspended structures

58-C0239/A: Digital system for structural testing including:
- No. 3 aluminum telescopic supports (maximum extension 6.00 m)                             
- No. 3 displacement transducers, 50 mm stroke with carrying case
- No. 3 cables 12 m each                        
- DATALOG 8,  8 channels multipurpose data logger battery operated and with rigid carrying case.  5.7" Touch screen graphic colour display. PC software to be ordered separately (82-P9008/F)

The determination of deflection of ceilings, bridges or any suspended structure, can be easily performed using this modern digital system. This independent data acquisition unit, equipped with in-built rechargable battery, touch screen graphic display and removable USB pen drive, is ideal for testing application where the data must be verified as soon as they are acquired or in case of programmed medium and long term acquisition.

The testing set includes DATALOG 8,  8 channels multipurpose data logger with rigid carrying case suitable for use on field, 5.7" touch screen graphic colour display; three telescopic supports with 3 displacement transducers 50 mm stroke.    
Additional transducers with telescopic supports and PC software can be ordered separately.
Mechanical strain gauges

58-C0230/10D: Mechanical strain gauge for the measurement of length variation. Measuring base 100 mm x 5 mm range. Digital gauge, 0.001 mm resolution, output for PC connection (special cable required)

58-C0230/30D: Mechanical strain gauge for the measurement of length variation. Measuring base 300 mm x 5 mm range. Digital gauge, 0.001 mm resolution, output for PC connection output for PC (special cable required)

This apparatus used for determining the length changes  was originally designed for use on concrete structures, but can also be conveniently used for any other type of structure including steel. The test set includes the extensometer with digital gauge resolution 0.001 mm, standard bar, calibration bar, 50 datum discs, adhesive compound for datum discs and carrying case.

82-D1261/LINK: Serial cable for PC connection
58-C0230/1: Datum discs. Pack of 50 pieces. Weight 0.1 kg
58-C0230/2: Adhesive tube, 20 g
Crack width gauges are used for measuring the crack widths in different positions: walls, corners, floors and difference of level. Made from plastic.

Main features:
  • Internal or external use
  • Monitors the opening or closing of crack to an accuracy of 1 mm
  • Crack record cards supplied with each gauge simplifies monitoring
  • Capable of monitoring vertical as well as horizontal movement

58-C0219/A1: Crack width gauge for walls. Pack of 5.
58-C0219/B1: Crack width gauge for corners. Set of 2.
58-C0219/C1: Crack width gauge for floors.
58-C0219/D1: Crack width gauge for difference of level.

58-C0219/SET: Complete set of crack width gauges including 58-C0219/A1 (for walls), 58-C0219/B1 (for corners), 58-C0219/C1 (for floors), 58-C0219/D1 (for difference of level) and carrying case.
Crack width microscope

58-C0218: Crack microscope 40x

A high quality microscope designed for measuring crack widths in concrete members, masonry walls and other structures.

The apparatus operates by an adjustable lamp unit and the image is focused by turning a knob. The eyepiece scale can be turned through 360° to align with the direction of the crack or pitch under examination.
Flat Jacks

The in-situ stress, deformability and resistance feature of masonry can be determined by the flat jack method. The test is performed by making a cut to a uniform depth into the mortar courses and inserting the flat jack or couple of jacks, which are pressurized to the desired level.

58-D0567/C2: Rectangular flat jack 400x200x4,5 mm, 50 bar max. working pressure.
58-D0567/C20: Rectangular flat jack 400x200x4,5 mm, less valves. 50 bar max. working pressure.

58-D0567/E2: Semioval flat jack 350x260x4,5 mm, 50 bar max. working pressure.
58-D0567/E20: Semioval flat jack 350x260x4,5 mm, less valves. 50 bar max. working pressure.

Test modes:
For stress determination a single flat jack has to be used.
For deformability and resistance determination two flat jacks have to be used.

The flat jacks have to be pressurized and the strain measured using the Analogue or Digital mode as follows:

For Analogue measurement the following accessories have to be used:
  • 58-D0568/A  Hydraulic pump with gauge.
  • 58-D0567/RS  Connecting hose (to connect the two jacks).
  • 58-C230/30D Mechanical strain gauge.

 For Digital measurement the following accessories have to be used:
  • 58-D0568 Hydraulic pump, less gauge.
  • 58-P0050  Pressure transducer.
  • 58-D0567/RS  Connecting hose (to connect the two jacks).
  • 58-D0585  Electronic extensometer (one to three).
  • 82-P9008: DATALOG 8, 8 channels stand alone multipurpose data logger
Deflectometers are used for determining the deflection of bridges, ceilings or any suspended structure.

58-C0223: Swing-arm deflectometer  with set of three 30x0.01 mm dial gauges.

Comprising: swing arm with clamp for total orientation in any position q.ty 3; wire coil 20 m q.ty 3; dial gauges 30x0.01 mm q.ty 3; plumb weight q.ty 3; carrying case.

58-C0224/1: 20 m low thermal deformation steel wire