Convergence Monitor model 4420 is based on a spring loaded wire mechanism. It has a measuring range of 1m and can monitor any reasonable distance with extension wires. When used with model 9600-2 readout, the unit’s high resistance electrical output has a resolution of 0.1mm. The 4420 is suitable for remote reading and data logging. This convergence monitor is light, small in size and simple to install.

Application

Measurement of displacements in:

• Tunnelling
• Open cut mines
• Dam construction
• Large excavations
• Construction control

Features

• Simple installation
• Suits a wide range of Applications
• Capable of interrogation by a variety of readouts and loggers. Digital counter option available
• Can provide alarm triggers when used with a datalogger

Specifications

• Measuring range: 1000 mm
• Accuracy:< ±0.5% full scale
• Resolution: 0.1 mm
• Dimensions: 115mm x 75mm x 60mm
• Weight: 0.55 Kg
• Anchor size: 600mm x 25mm x 5mm
• Anchor weight: 0.6 Kg