Weighing systems for hazardous areas
Weightron provide a range of ATEX certified load cells and weight indicators, suitable for ATEX weighing in zones 1,2,21 and 22 (gases and dusts). Installation of weighing systems in designated hazardous areas must be carried out by suitably qualified personnel.
The D440 ATEX certified weight indicator offers a wide range of features and can be used in hazardous areas for both gases and dusts.
The D440 can operate directly in the hazardous area, without the need to install additional galvanic barriers into the safe area. This not only saves installation costs but also gives a much neater and more professional installation.
The D440 has a single and double weighing function and can be configured for simple dosing or filling applications. The 18 key alphanumeric keypad facilitates set up and operation, and the unit comes as standard with four electro-mechanical relay outputs, four opto-isolated inputs and two bi-directional optical-fibre serial channels. An optional voltage or current analogue output is also available.
Weightron are certified partners for the extensive Sartorius range of Ex certified bench scales, floor scales and weight indicators. Further information is available on request.
What is ATEX?
ATEX is the name commonly given to the two European Directives for controlling explosive atmospheres:
1) ATEX 114 – Product Directive (formerly known as ATEX 95) on minimum requirements for improving the health and safety protection of workers potentially at risk from explosive atmospheres.
From April 20, 2016 on, all explosion proof products which are being placed on the European market must comply to the new Directive 2014/34/EU. This new EU Directive belongs to the New Legislation Framework (NLF) and is mandatory being implemented in the National Legislation of Member States in the European Union. In the Netherlands this is “Warenwetbesluit Explosieveilig Materieel 2016”, in the UK implementation by Statutory Instrument.
2) ATEX 153 – Social Directive (formerly known as ATEX 137) concerning equipment and protective systems intended for use in potentially explosive atmospheres.
The content of Directive 1999/92/EG remains unchanged. Only the numbering of what was known in the market as ATEX 137, changes in to ATEX 153. The reason for this change is the change in the clauses of the Treaty of Lisbon, where clause 153 deals with European Occupational Health and Safety. This Directive describes the minimum health and safety requirements for workers in hazardous areas. In the Netherlands this Directive has been implemented in the National Legislation by ‘ARBO Besluit’. In the UK by DSEAR, which is Dangerous Substances and Explosive Atmospheres Regulations. Employers must draft and maintain a so-called ‘Explosion Protection Document’ (EPD).
Additional information is also available on the HSE web site