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.

All models use spring leg anchors for ease of installation up-hole from the roof. The AWTT model is ATEX/IECEx rated for use in hazardous environments (see specifications for more details).

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 displaceent reading in mm with traffic light warning system at pre-set threshold level.

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.

BENEFITS

Increase Safety

High Reliability

Increase Productivity

Technical Support