Displacement Detector System

Description

The Model 4200 Displacement Detector System is an Early Warning System. The displacement detector consists of up to 6 displacement sensor switches. The detector control unit is attached to a post. The sensors’ switch ends are mounted on stable ground and the other end is attached and turns on an audible/visual alarm to the moving section. The system switches when a pre-set displacement is exceeded or the cable is broken. The Model 4200 controller allows up to six sensors to be monitored continually.

Application

Measurement of displacements in:

• Open cut mining
• Deep excavations
• Land fill subsidence
• Embankment
• Cliff stability
• Structure stability

Features

• Fail safe operation
• Waterproof enclosure
• Sensor condition indicator
• System integrity test facility
• Battery condition indicator
• Inexpensive sensors
• Controller can be re-located
• Small volume of equipment

Specifications of the Model 4200 Displacement Detector System

• Displacement limit range: 1 – 90 mm
• The alarm controller suits up to 6 sensors
• Steel posts as the surface sensor anchors
• Audible and visual alarm signal comprises a 12V double strike xenon beacon and a 120dB pulsed tone audible siren
• Dimension (head frame): 380 x 600 x 210 mm
• Dimension (sensor): 25 mm x 510 mm long
• Dimension (audible/visual alarm): 390 x 220 x 540 mm
• Weight (head frame): 13.7 kg
• Weight (sensor) 0.44 kg
• Weight (audible/visual alarm): 13 kg