DIN EN 50379-3 VDE 0400-50-3:2005-01

Specification for portable electrical apparatus designed to measure combustion flue gas parameters of heating appliances

Part 3: Performance requirements for apparatus used in non-statutory servicing of gas fired heating appliances;

DIN EN 45544-1 VDE 0400-22-1:2000-10

Workplace atmospheres – Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours

General requirements and test methods;

DIN EN 45544-2 VDE 0400-22-2:2000-10

Workplace atmospheres – Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours

Performance requirements for apparatus used for measuring concentrations in the region of limit values;

DIN EN 45544-3 VDE 0400-22-3:2000-10

Workplace atmospheres – Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours

Performance requirements for apparatus used for measuring concentrations well above limit values;

DIN EN 45544-4 VDE 0400-22-4:2000-10

Workplace atmospheres - Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours

Guide for selection, installation, use and maintenance;