Topics

Matrix of correlation coefficients between eigenvectors.

We provide advice and support on the planning of research and industrial buildings with regard to the installation of magnetic-field-sensitive equipment (e.g. electron microscopes, MRI scanners, pattern generators,…

The main switch is used to electrically disconnect the vehicle from the overhead line. The sudden movement of components may cause disruptive, impulse-like noises both inside and outside the vehicle. …

A major accident prevention plan must be drawn up for an operational area (lower and upper class) in accordance with Section 8 of the Major Accidents Ordinance (StörfallV). It essentially sets out how the operator…

The Major Accidents Ordinance, or StörfallV for short, is the 12th Ordinance on the Implementation of the Federal Immission Control Act (12th BImSchV).

Colloquial term for the plan to prevent major accidents in accordance with Section 8 of the Major Accidents Ordinance (StörfallV).

Scenarios (colloquially known as ‘major-accident scenarios’) are used as a basis for analysing and assessing any potential impacts, taking into account the substances handled and the conditions within the plant or…

Creating a representation of a wide variety of objects and information within a coordinate reference system, e.g. overview maps of locations, noise maps, grid survey maps, and much more.

Mass concentration is defined as the ratio of the mass of the component being measured to the volume of the gas.

Mass flow is the ratio of the mass of the measured component flowing through the measuring cross-section to time. 

Mass flow density is the ratio of the mass flow rate of a measured component to the corresponding cross-sectional area. 

Analysis of drill cores to determine the absorption, absorption coefficient or flow resistance of surface layer samples.

The measurement axis is defined as the line within the measurement cross-section on which the measurement points are located. It is limited by the inner wall of the flue gas duct.

The measurement cross-section is the area at the sampling point that is perpendicular to the central axis.

This guideline specifies a method for measuring the bulk deposition of PCDD/F (polychlorinated dibenzo-p-dioxins/polychlorinated dibenzofurans) and PCBs (polychlorinated biphenyls). All seventeen 2,3,7,8-substituted…

The standardised measurement method specified in this guideline is intended for the determination of PCDD/F in outdoor and indoor air.

Subject to approval of the competent authority, it is not necessary to determine existing pollution levels by means of separate measurements if, following an analysis of the results from monitoring stations within…

This guideline describes a method for determining the fibre concentration of inorganic fibrous particles in indoor or outdoor air and their classification into specific fibre classes (chrysotile, amphibole asbestos,…

This European Standard specifies a method for determining the atmospheric deposition of benz[a]anthracene (BaA), benzo[b]fluoranthene (BbF), benzo[j]fluoranthene (BjF), benzo[k]fluoranthene (BkF), benzo[a]pyrene…

This document specifies a standard method for determining the particle number concentration in ambient air in the range up to approximately 10⁷ cm⁻³ for averaging times of at least 1 minute. The standard method is…

Measurement of illuminance / luminance to determine the level of reflectance. Measurement of contrast in accordance with DIN 32984 (floor indicators in public spaces).

A measurement point is the location within the measurement cross-section at which a partial volume flow is sampled or at which measurement data is obtained directly.

The measurement section is the part of the flue gas duct that comprises the measurement cross-section(s) as well as the inlet and outlet sections.

Support in optimising plant operation or identifying the cause of a fault. 

As an alternative to European measurement methods, we also use EPA standards where necessary, e.g. for the measurement of condensibles in accordance with EPA202.

Measurement of greenhouse gases.

Including functional tests and calibration of the installed measuring equipment.

Determination of the vibration exposure for a representative exposure scenario. Where vibrations need to be measured, the employer must ensure that the vibration measurements are carried out by competent personnel…

Measurement of ammonia in outdoor air – sampling with passive collectors – photometric or ion chromatographic analysis.

This guideline describes the specific requirements for procedures for determining bulk deposition and wet deposition of water-soluble anions and cations. The application of the guideline enables the determination of…

The standard specifies a method for monitoring compliance with the European limit value for benzene in ambient air of 5 µg/m3. The method is based on the adsorption of benzene onto activated carbon, from which the…

The DIN EN 14662-3 standard specifies a quasi-continuous measurement method for determining the concentration of benzene in ambient air using automated sampling and gas chromatographic analysis. …

The standard specifies a passive sampling method for monitoring the European limit value for benzene of 5 µg/m3. The method is based on the passive adsorption of benzene onto activated carbon, from which it is…

Detection of airborne microorganisms and viruses in outdoor air – active sampling of bioaerosols.

This document specifies a continuous, non-dispersive infrared photometric measurement method for determining the concentration of carbon monoxide in air. It specifies the performance parameters and sets out the…

This guideline describes a standardised procedure for determining dust deposition using the Bergerhoff method. Dust deposition, as defined in this guideline, is a mass flow density, i.e. mass per unit area and time.…

The DIN EN 15853 standard specifies a validated method for determining the total deposition of mercury, which can be used within the framework of the European Council Directive on air quality and clean air for…

This guideline is intended for measuring the concentration of total gaseous mercury following manual sampling.

This European Standard specifies a continuous chemiluminescence measurement method for determining the concentration of nitrogen dioxide and nitric oxide in air. It specifies the performance parameters and sets out…

Determination of the concentration of nitrogen dioxide using a passive sampler.

This European standard specifies a continuous ultraviolet photometric measurement method for determining the concentration of ozone in air. It sets out the performance criteria and specifies the minimum requirements…

DIN EN 12341 is a European standard that describes a standard measurement procedure for determining the PM10 or PM2.5 mass concentration of particulate matter in ambient air. It covers a manual gravimetric method…

Guideline for automatic measuring equipment for determining dust concentrations (PM10; PM2.5).

The term ‘measurement station’ refers to the location at the flue gas duct in the area of the measurement cross-section(s). It is characterised by structural and technical installations such as measurement…

This European Standard specifies a continuous ultraviolet fluorescence measurement method for determining the concentration of sulphur dioxide in air. It specifies the performance criteria and sets out the minimum…

This document specifies a measurement method for determining particulate-bound benzo[a]pyrene (B[a]P) in air, which can be applied in the context of Directive 96/62/EC and Directive 2004/107/EC. …

DIN EN 14902 is a standard that specifies a method for determining particulate-bound lead (Pb), cadmium (Cd), arsenic (As) and nickel (Ni) in ambient air. This standard is used within the framework of the European…

Characterisation of the dynamic behaviour of vibrating systems by means of their natural vibration parameters.

Mercury is deposited from the air into soil and water bodies via dry and wet deposition. Through various processes, such as biomethylation, the different species are continuously transformed and transferred between…

Measurement of inhalation exposure: heavy metals, cooling lubricants, mineral oils.

Metras is a model developed by the University of Hamburg for calculating mesoscale, prognostic, non-hydrostatic atmospheric flows. The model complies with the requirements of VDI 3783 Part 7 for the calculation of…

A light rail vehicle for local transport, which operates mainly on tracks separate from the road network and underground.

A two-dimensional arrangement of a large number of microphones (e.g. 40 to 120) in the shape of a circle, cross, star or spiral.

Measurement methods and acceptance criteria for airborne noise caused by on-board equipment or structural components of a vessel.

Measurement methods and acceptance criteria for strucure-borne noise caused by on-board equipment or structural components of a vessel.

Former standard: Measurement procedures and acceptance criteria for airborne noise caused by on-board equipment or structural components of ships.

Former standard: Measurement procedures and acceptance criteria for structure-borne noise caused by on-board equipment or structural components of ships.

United States Military Standards. A collection of various guidelines, procedural instructions and general rules.

Mixtures or solutions consisting of two or more substances (chemical substances) that are physically mixed together but not chemically bonded.

A method for analysing the natural vibration behaviour of structures.

A method for the targeted adaptation of numerical models to measurement data.

Monitoring tests to assess and approve renovation works.

A technique for improving video quality that analyzes motion and inserts additional frames and content to make motion appear smoother.

Measurement of inhalation exposure: DME, nitrogen oxides.

Forecasting in the planning process: light pollution caused by vehicle headlights (e.g. when exiting underground car parks).

Moulds are microorganisms that can grow on organic and inorganic building materials where there is sufficient moisture. They often develop as a result of moisture damage, condensation, thermal bridges, water ingress…

Mean profile depth in mm, determined in accordance with ISO 13473-1, which constitutes an acceptance criterion for ISO 10844 noise test tracks. 

Measurements using measurement systems designed to record a large number of parameters simultaneously.