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m.i.e.

minimum ignition energy

Maintenance

Measurements for delay of breakdown of existing wear reserves.

Maintenance

Measurements for preservation respectively repair of the plant nominal condition.Bewahrung bzw. Wiederherstellung des Anlagensollzustandes

Maintenance friendliness

Good access to components relevant for maintenance.

Maintenance interval

Gap between two maintenances

Maintenance plan

List of maintenance works to be carried out.

MAK

Maximale Arbeitsplatz Konzentration

Malfunction

A temporary dysfunction

Mass flow

Mass per time unit

Mass forces separator

General term for gravity separator, centrifugal separator and inertial separators

Median value dust

Medial particle size of dust

Membrane PTFE

Open membrane that are applied to different carrier media.

Metal fibre filter

Metallic filter media

Metal filter

General term for knit metal meshes filter and others

Metal filter cartridge

Filter cartridge with a pleated filter medium made of stainless steel fibres.

Micro filter

see HEPA filter

Microcrystalline substances

Soldids with a particle size smaller 10 µm

Mini filter

Unspecified term for a very small filter unit.

Minimised contamination

Not specified term without regard to a contamination level.

Minipleat filter

Cassette filter with a thermoplastic spacer.

Mist

Spreaded drops in air occurred because of undershooting the dew point temperature.

Mobile

portable

Mobile deduster

Portable deduster

Mobile filter

Mobile filter unit

MPPS

Most penetrating particle size

Multi bag filter

Filter element or filter plant

Multi pocket filter

Sewed up unit of several filter pockets.

Multi-stage filter

Filter combination of serially connected filter stages

Mutagenic substances

Substances classified as altering genetic material