Mechanical Telltales

Brochure

DESCRIPTION

The Mechanical Telltales from Trolex’s RMT product line are low-cost, visual tools for monitoring movement in a tunnel roof, typically for use in underground mines. There are 3 models of telltales: Auto-Warning Telltale (AWTT), Mechanical Telltale and Rotary Telltale. All models include a visual scale for monitoring movement (in mm). The AWTT model also includes LED’s for indication of movement above a set threshold, from a further distance.

APPLICATIONS

  • Fully proven in coal mine tunnels.
  • Mechanical Telltale + Rotary Telltale:
    Typically installed in vertical boreholes close to the face and near to the centre of the heading as part of the normal cycle by purpose trained personnel.
  • Auto-Warning Telltale:
    Typically installed in vertical boreholes where access may become restricted or would constitute a high risk for direct or close-up viewing.

QUICK SPECS

  • Mechanical Telltale:
    Visual displacement reading in mm with traffic light warning system.
  • Rotary Telltale:
    Visual displacement reading in mm with traffic light warning system, rotary dial – removes parallax error as it is easier for the user to take readings on the rotary face.
  • Auto-Warning Telltale:
    Gives a visible indication (flashing LEDs) when triggered by a pre-set level of strata movement.
    Once triggered, the AutoWarning Telltale flashes for months or until manually reset.
    Visual displacement reading in mm with traffic light warning system at pre-set threshold level.

VIEW ILLUSTRATIONS ON HOW THIS IS USED FOR: