The VARIOTEC 460 Tracergas® was developed especially for leak detection on underground pipes by using tracer gas. It is characterised by an outstanding price to performance ratio.
Precise: The extraordinarily low cross sensitivity of the gas-sensitive semiconductor (SC) with regard to moisture and methane ensures an absolutely sure result and a resolution down to 0.1 ppm H .2
Functional: Thanks to an innovative operating concept, a large display and simple menu structure, device operators can quickly get reliable results.
Efficient: In combination with the bell probe D80 you can achieve outstanding reaction times.
Flexible: The expanded measuring range of the thermal-conductivity sensor, up to 100 % vol. H 2 easily allows for further measuring tasks.
Integrated: Save your measurements and transmit the results using the USB interface on the computer.
Mobile: The 4 AA-size rechargeable batteries can be charged in just 3 hours and the operating time is at least 8 hours. As an alternative, you can use disposable batteries.
Reliable: Sewerin measuring devices are well known for their quality and durability.
A tried and tested method
Using tracer gas is a tried and tested method of pinpointing leaks. It can be used in gas and water distribution networks, pipelines in buildings, heating systems, pressurised communication cables, gas-filled high voltage power lines and landfill sites sealed with double membrane layers. It can also be used to test for leaks in industrial products such as pipes, pumps, engine blocks and airfoils.
Detecting gas leaks by tracer gas involves feeding a mixture of 95% nitrogen (carrier gas) and 5% hydrogen into the pipelines or other equipment/products being tested. The hydrogen escapes through the leak and is detected by the highly sensitive, specialised sensor.
The low amount of hydrogen (just 5%) means that this method is safe: the gas is incombustible as per ISO 10156 thanks to the use of nitrogen as the carrier gas. It is non-toxic, and therefore also permitted for use in drinking water networks, as well as non-corrosive.
Tracer gas is cheap and easy to obtain from technical gas or welding gas dealers. It is also environmentally-neutral and permeates all cover layers such as asphalt, concrete and other seal coats. Tracer gas always looks for the shortest route from the leak to the surface.