Translation of "Untere explosionsgrenze" in English

The limit of concentration for flammable substances is determined by the lower explosibility limit.

When the 20% lower explosion point threshold is reached, GS 1.1 generates audible and visible alarms.

It can detect 0-100% LEL (Lower Explosive Limit) of natural gas concentration.

This means that the lower explosion limit may be lower and the upper explosion limit higher.

The concentration in the headspace above flammable liquids can be guaranteed to remain below the lower explosion limit if the temperature at the surface of the liquid is at all times kept far enough below the flash point (a temperature difference of 50 C usually affords adequate safety for pure solvents and 150 C for solvent mixtures).

If the concentration of a sufficiently dispersed flammable substance in air exceeds a minimum value (the lower explosion limit), an explosion is possible.

Very wide inflammability range, 'explosive' in air; lower limiti 4$ (4·65# in oxygen), upper limit: 74.2$ (93.9Í in oxygen).

The inflammable substances are assigned a lower explosion concentration limit at which, after ignition, a flame independent of the ignition source will just cease to be able to propagate on its own.

In this way, during transportation of the packaged pyrophoric metallic catalyst in a closed container or during storage in a closed space, accumulation is prevented of so much hydrogen as, in a mixture with air, will reach or exceed the lower explosion limit of 4 vol. % H2.

Thus, the lower explosive limit of NH 3 in air is about 15% by volume, depending on pressure and temperature.

The lower and the upper explosion limits are those limits of concentration of the flammable gas in admixture with air at which propagation of a flame does not occur.

The lower limit of explosion of such gas mixtures lies indeed at a very low level, namely at 3.0 to 6.0 volume %, taken as the sum of the combustible gases comprising ethylene, 1,2-dichloroethane, carbon monoxide and organic by-products, depending on the oxygen content of the respective gas mixture.

This type of measuring device operates satisfactorily up to concentrations of 100% LEL (Lower Explosion Limit) of the combustible gas in air.

The supporting air also helps to observe safety specifications concerning solvent concentrations in the drying chamber 50, i.e., the quantity of air required to maintain the air cushion makes sure that the lower explosion threshold value of the solvent/air mixture is not reached.

On exceeding a given concentration limit (lower explosion limit), the gas mixture becomes explosive so that there is the danger that the test tube with its high reaction temperatures becomes the ignition source.

Their control signals can be set to a percentage of the lower explosion limit, preferably 50% with the current safety regulations.

By the time enough methanol has been poured over the corpses in a long trench, there would be enough of it in the air on a hot day to blow up when the fire is lit, the lower explosive limit of methanol being a few percent by volume.

Therefore, the solvent steam concentration must not exceed a limiting value of 25 percent of the lower explosion limit of the used solvent, or 40 g/m3 (at 20 °C), if the lower explosion limit of the used solvent is unknown.

The upper limit of the NH 3 content is advantageously determined by the lower explosion limit of the NH 3 /oxygen mixtures, which is also dependent on other possible gas components, such as, for example, steam.

The explosive range is approx. between 6.2% by volume as the lower explosive limit and 12.3% by volume as the upper explosive limit.

The fresh air supply is adjusted in such a manner that, when the installation 1 is operated, the so-called lower explosion limit of the composition of the gas atmosphere in the drying tunnel 5 is not exceeded.

The fluid flow is thereby set such that, during operation of the installation 1, the so-called lower explosion limit of the composition of the gas atmosphere is not exceeded in the drying tunnel 5 .

The fluid flow is thereby set such that, during operation of the installation 1, the so-called lower explosion limit of the composition of the gas atmosphere is not exceeded in the drying tunnel 5 .

When hardening is effected using UV light, serious safety problems arise since the lower explosion limit of styrene with air is exceeded within a few hours.

In the extended integrated process for the synthesis of propylene oxide, the use of the combined substreams T(2) and T(5 a) in step (e) offers the advantage that it achieves a reduction in the amount of oxygen in the reaction mixture of the hydrogen peroxide synthesis to below the lower explosive limit (4% H 2 to 96% of O 2), thus increasing the safety of the process.

These two limit values are the lower explosive limit and the upper explosive limit, the range of combustible gas content lying between them is the explosive region (ignition region).

The blowing agent content thus determined serves, via regulating devices known per se to a person skilled in the art and described in the literature, as control variable for the air and/or nitrogen feed stream, to be precise more preferably such that the air and/or nitrogen feed stream into the foaming channel is always of at least such a magnitude that the lower explosion limit of the blowing agent or the oxygen concentration limit in the off-gas stream and in the foaming channel is not breached.