TAG level switches are designed to detect the presence of materials that accrue in the surroundings of the electrode’s position. Materials can be fluids, powders, granules and conductive or non-conductive, grains, powders, plastics, oils or water. The electrode may be installed in free air or closed vessels, including metallic or non-metallic pipes or reservoirs.
Some of the principals on which the TAG units function are changes of RF current and voltage, loss of energy and changes of dielectric constant versus air.
RF is transferred from the feeler through the mass of the material to the ground point of the sensing unit. This causes RF energy losses. The variations of RF current are converted to a DC signal that is sent to the control box to activate the dry contact relay. The set will continue to function even when the feeler is completely covered by material.
The function of the sensing unit is not hampered by material sticking to it or influenced by the relative humidity of the environment. After initial fitment of TAG, no further adjustment is required of these fit-and-forget devices.
Leaders in sensor technology Gail Norton Instrumentation
Sensors & Transducers
Photoelectric eyes have always needed perfect working conditions, but in the workplace there is no such thing. Steam, water, light and dirt interfere with most photoelectric eyes, but never with a Telco sensor.
Read more...Sensors for blocked or empty chute detection Gail Norton Instrumentation
Sensors & Transducers
The Telco Sensors system, used for blocked chute detection, consists of a PA 11 photoelectric amplifier with transmitter (LT) and receiver (LR).
Read more...Sensors for chute monitoring Gail Norton Instrumentation
Sensors & Transducers
In many industries there is a problem for photoelectric sensors. The highly contaminated environment makes it difficult for them to operate reliably. Telco sensors overcome this problem through powerful high-performance infrared sensors that ensure penetration of harsh pollution, guaranteeing reliable detection.
Read more...Power and control platform for complex applications Schneider Electric South Africa
Operator Interfaces, Switches & Relays
Schneider Electric has unveiled the latest device in its PowerLogic range of products, the PowerLogic P7 digital power and control platform. This was designed to offer the best performance in complex and high-demand applications, and is based on a visualisation-ready, next-generation platform powered by a single configuration tool, the PowerLogic engineering suite.
Read more...High-efficiency switching solutions
Operator Interfaces, Switches & Relays
Becker Mining South Africa has launched a new-generation energy distribution system that has been specially developed to enhance productivity and safety in the challenging conditions of local underground coal mines.
Read more...Telco sensors in the pulp and paper industry Gail Norton Instrumentation
Sensors & Transducers
The pulp and paper industry poses a major problem for most photoelectric sensors. The high level of contamination in these dusty, dirty and grimy environments makes it impossible for most competing sensors to operate and sense reliably and efficiently.
Read more...Optical fork sensor series Gail Norton Instrumentation
Sensors & Transducers
The OFS series consists of self-contained optical fork sensors that are housed in a durable, U-shaped aluminum housing, which operates in through-beam mode.
Read more...World-first solution for platinum miner ABB South Africa
Operator Interfaces, Switches & Relays
When a consulting engineering company approached ABB about a specific problem that its platinum mining client was experiencing at its smelter facility in the North West Province, it was an opportunity for the technology provider to showcase its innovation and adaptability in responding to specific customer requirements.
Read more...Robust industrial relays Vepac Electronics
Operator Interfaces, Switches & Relays
Industrial RT relays from Vepac are particularly robust and are used for high load control. RT modules can control up to three changeover contacts, with 10 A each. In addition, this product is equipped for safety reasons with manual operation, improved LEDs or free-wheeling diodes.
printer friendly version