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Description

Hazardous Gas, Vapour and Mist Environments: ATEX Zones 1 and 2. A good example of an ATEX Zone 1 or ATEX Zone 2 classified operation would be a chemical or petrochemical plant, where there is a heightened risk for explosion during the course of normal day to day operations. A place where an explosive atmosphere is not likely to occur in normal operation but could occur for short periods would be classified Zone 2, Zone 22 (dust) or Category 3. Common choices for Tyes of Protection for this environment would be Ex m or Ex n. What they don't tell you is that under the ATEX directive 60079-15, steel panel enclosure manufacturers such as indEx, can self-certify for zone 2, 22, and category 3 solutions. Type 'n' solutions were developed to allow quality industrial components for use in zone 2.

AVAILABLE VERSIONS

• DFWATEX3GD: IP68 stainless steel, ATEX 3GD indicator with internal power adapter. 17-key keypad, LCD backlit display, and standard weighing programme. Protection: ATEX II 3G Ex nR IIC T6 Gc X for gases and ATEX II 3D Ex tc IIIC T85°C Dc IP68 X for dust. Complete with manual and ATEX CE Conformity declaration, available in EN, DE, FR, and IT.
• DFWATEX3GDB: ATEX 3GD indicator, to be combined with BP6ESTATEX3GD, BP6CB and BTCB3GD options.IP68 stainless steel case, 17-key keypad, LCD backlit display, and standard weighing programme. Protection: ATEX II 3G Ex nR IIC T6 Gc X for gases and ATEX II 3D Ex tc IIIC T85°C Dc IP68 X for dust. Complete with manual and ATEX CE Conformity declaration, available in EN, DE, FR, and IT.

MAIN FEATURES

• Waterproof 17-key functional keypad.
• Backlit LCD display with 6 25-mm high contrast digits and with indication of active functions.
• IP68 Satin finish stainless steel case.
• Suitable for use on the table, or wall.
• Dimensions: 264x174x115mm.
• Up to 10.000e or multirange 3 x 3000e @ 0,3 µV/d in CE-M approved version for legal for trade use.
• Up to 1.000.000 displayable divisions for internal factory use.
• Up to 8 signal linearization points with DINITOOLS (3 from keypad).
• Internal resolution up to 3.000.000 points.
• A/D 24-bit sigma-delta conversion, up to 200 conv./sec. autoselect.
• Board protection case inside the box.
• Digital calibration and set-up from keyboard.
• Instrument management & configuration from PC with DINITOOLS.
• 4 channels (for single weighing system).
• Power supply:
  DFWATEX3GD: through 110-240Vac internal power adapter (optional power supply cable);
  DFWATEX3GDB: through optional external battery (BP6ESTATEX3GD code), rechargeable in safe area. Battery charger not included.
• Connection with up to 8 load cells with 350 Ohm input resistance.

MASTER/REPEATER OPTION

• Specific programme (MSTSLV code) for use of the indicator as a universal weight repeater or as a multi-scale repeater (MASTER) in combination with DFW/DGT/MCW.
  FUNCTIONING MODES:
• Multi-scale repeater (MASTER)
  function which allows to repeat up to 32 independent scales, with the possibility of managing their functions, or displaying and printing the sum of the weighs of all the scales.
• UNIVERSAL weight repeater
  function which allows to repeat the weight of any scales, through the configuration of the input string.

AVAILABLE UPON PRICE ESTIMATE

• 24 Vdc power supply.

MAIN CERTIFICATIONS

• EU Type Examination Certificate (45501:2015)
• OIML R76

I/O SECTION

• RS232/C port configurable for connection to printer/labeller in safe zone.
• RS232/C (or optionally RS485) bi-directional port configurable for PC, PLC, additional remote display, in safe zone.

Itube studio 7 4 0 50. FUNCTIONS

• KEYBOARD:
  Zeroing, Automatic tare, Presettable tare, printing and/or data transmission, selectable function command, on/off switching, database of 30 tares, 2 Numeric IDs, keyboard lock, repetition of last printout made.
• SELECTABLE FUNCTIONS:
  – High Resolution Weighing x 10.
  – Net/Gross or lb/kg conversion.
  – Accumulation.
  – Formula weighing.
  – +/- Checkweighing.
  – Percentage weighing.
  – Approved transmission of the weight to PC/PLC (with Alibi memory ALMEM option).
  – Counting(Max. resolution of 1.500.000 divisions).
  – In/Out Truck weighing.
  – Hold.
  – Set Point Control (with DFIO option).

• RS232/C port configurable for connection to printer/labeller in safe zone.
• RS232/C (or optionally RS485) bi-directional port configurable for PC, PLC, additional remote display, in safe zone.

Itube studio 7 4 0 50. FUNCTIONS

• KEYBOARD:
  Zeroing, Automatic tare, Presettable tare, printing and/or data transmission, selectable function command, on/off switching, database of 30 tares, 2 Numeric IDs, keyboard lock, repetition of last printout made.
• SELECTABLE FUNCTIONS:
  – High Resolution Weighing x 10.
  – Net/Gross or lb/kg conversion.
  – Accumulation.
  – Formula weighing.
  – +/- Checkweighing.
  – Percentage weighing.
  – Approved transmission of the weight to PC/PLC (with Alibi memory ALMEM option).
  – Counting(Max. resolution of 1.500.000 divisions).
  – In/Out Truck weighing.
  – Hold.
  – Set Point Control (with DFIO option).

Please click here for the DFW 'ATEX3GD' Weight Indicator for ATEX 2 & 22 Zones Datasheet…

The phrase 'ATEX certification' is often used in engine starting, but what exactly does it mean? If you operate an offshore platform or underground mine – or if you supply products to companies that do – ATEX certification means safety.

The name ‘ATEX' is short for 'Atmospheres Explosibles'. It is a strict set of regulations that applies to products intended for use in any hazardous working environments. Products are categorised according to the level of hazard that exists in the zone they will be used.

For IPU, ATEX applies to the engine starting systems we manufacture for:

• Fire pumps
• Winches
• Wire lines
• Compressors
• Generators and power packs
• FSVs (free-steer vehicles)
• Rail systems

Our handbook explains how you can ensure your equipment will operate safely in ATEX Zone 0 and why IPU's air & hydraulic engine starters are compliant – Click here to request your free copy

Equipment can only display the ATEX logo once they have passed ATEX Certification.

Routes to ATEX certification

There are two different routes to having products ATEX certified. Self-certification is allowed for products in Categories 2 and 3. These products are destined for use in the less hazardous zones: 1, 2, 21 and 22. The manufacturer can stipulate that the product conforms to the necessary standards.Category 1 products are destined for use in the most hazardous areas: 0 and 20. These products can only be approved by an external agency known as a Notified Body.

Category 1 products are destined for use in the most hazardous areas: 0 and 20. These products can only be approved by an external agency known as a Notified Body. The EU list of authorised Notified Bodies can be found on the EU website.

ATEX Certification through Notified Bodies

IPU's ATEX starter motors are ATEX-certified and approved to BS EN1834-1 and 2 standards through a 3rd party assessment. They achieve compliance through a number of factors including:

• A cast iron construction to eliminate any aluminium content. Aluminium is banned in most underground mines as it is a key component in a thermite reaction.
• Pre-engagement between the pinion and the ring-gear. The starter motor waits until the pinion has fully engaged with the engine's ring-gear before rotating and cranking the diesel engine. This eliminates the risk of sparks being generated by traditional inertia engagement.

ATEX Self-Certification

Self-regulation is a process with a poor reputation. Just ask Fifa. People are reluctant to trust self-policing organisations. Complete trust is essential where platform safety is concerned . But what level of confidence can be attached to a certificate issued by the same company that manufactured the product?

Is ATEX self-certification acceptable or a disaster waiting to happen?

ATEX is the standard that governs safety in potentially explosive working environments (including platforms and underground mines). When it comes to ATEX certification there can be no room for uncertainty. That is why IPU's ATEX approved starters were put through rigorous 3rd party assessment to achieve certification.

If a starter motor has been self-certified but does not meet all of the requirements the results could be catastrophic. If lucky, the result will be as mild as equipment failure but if not, it could lead to the operator suffering injury or a fatality.

A number of factors could impact the quality of an ATEX self-certification assessment. Including:

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• Poor knowledge of the standards could lead to an inaccurate assessment.
• An internal auditor may be under pressure to pass a product.
• The internal auditor may also be unknowingly biassed during the audit process.

IPU's ATEX approved start motors

IPU's ATEX approved hydraulic and air start motors are unique. They are made using a cast iron construction to eliminate the use of aluminium. ATEX recommends against using aluminium and for good reasons. Aluminium is the primary fuel for a thermite reaction, a chemical process that gives off so much heat it is used to weld railway tracks. In most parts of the world, aluminium is banned from underground mines.

ATEX marking

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ATEX certified products display a mark that identifies the environment for which they have been approved. A typical mark could be the ATEX symbol followed by 'II 2G Eexd IIB T4'. The meaning of the marks is as follows:

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