DFWIECEX Weight Indicator, IECEx and ATEX certified, for Zones 1 and 21, 2 and 22

As of: Thursday, May 1, 2025
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DFWIECEX

Standard Features

  • LCD display with RGB backlight
  • State-of-the-art, high-speed X-Core CPU ideal for handling fast and accurate weighing, filling or dosing processes
  • ASCII/RTU Modbus
  • Comprehensive range of industrial interfaces, at your choice:
    - Intrinsically safe digital I\O
    - Intrinsically safe analog output
    - Up to 3 intrinsically safe bi-directional RS485 serial ports
    - Bluetooth

    NOTE: All of the above interfaces are certified for use in hazardous areas

The DFWIECEX weight indicator represents the state of the art for weighing in environments with a high risk of explosion. Thanks to the RGB backlit display, to the powerful processor and above all to the main interfaces available, all intrinsically safe, DFWIECEX allows the integration of weighing within production processes, directly in hazardous areas, driving solenoid valves and communicating with PLCs and other devices. IECEx and ATEX certified and approved for legal-for-trade use.

DFWIECEX Specifications

Technical features:
  • Protection:- for Gas: Ex ib [ib Gb] [ia Ga] IIC T4 Gb- for dust: Ex tb [ib Db] [ia Da] IIIC T135°C Db
    - ATEX: II2(2)G(1)G
    - ATEX: II2(2)D(1)D
    - Ta 0°C / +50°C
  • High contrast RGB backlit display, with 6 digits of 25 mm. Brightness adjustable from keyboard.
  • 17-key waterproof keyboard
  • AISI304 stainless steel casing, with IP65 and IP68 certified protections.
  • Minimum measurement range (internal use): 0.01 µV/d
  • 4 load cell inputs, with selectable operating mode:
    - Single scale (use of only one input)
    - 4-channel digital junction box (use of multiple load cell inputs)
  • Metrological approval: 10,000e or multi range 3x3000e @ 0.3µV/e.
  • Connection up to 8 load cells of 350Ohm.
  • Possibility of direct connection to load receptor installed in Zone 0 and 20.
  • 1 Intrinsically safe RS485 serial port as standard, for two-way communication with PLCs, PCs or devices in explosive zones.
  • Power supply of your choice (see options table):
    - Through Dini Argeo power supply, 110-230 Vac or 24 Vac - 24 Vdc
    - Through Dini Argeo external battery, in stainless steel, with autonomy of about 40 h (Connection/disconnection directly in explosive zone and charging in safe area)

    NOTE: Autonomy may be reduced depending on load reception system, connected communication accessories, and backlight configuration.
  • Dimensions: 280x143x185 mm.
  • Available cable glands: 2 x PG9 as standard, 1 PG supplied (not mounted) and setup for a further 2 optional PG9s.
  • OPTIONAL DIGITAL INPUTS/OUTPUTS:
  • Intrinsically safe 4-input, 4-output digital card with the following specifications:Inputs- Ui: 18 V
    - Ri: 214 Ω
    - R input: 859 Ω
    Electronic relay outputs- Ui: 18 V
    - Pi: 1,75 W
    In: 70 mA
  • Intrinsically safe power supply terminal, for piloting devices in ATEX zone or push-button panel.Output voltage 6V, max current 300mA.

    NOTE: by using the available power supply terminal, it is possible to manage the push button panel code EXPHBN in a direct way, even in a safe area, without protection barriers.

  • OPTIONAL ANALOG OUTPUT:
  • Intrinsically safe analog output, programmable at 0...10Vdc, 0...20mA or 4...20mA.

    NOTE: It is possible to transmit the signal directly to the safe area using the intrinsically safe protective barrier, code PFANOUTEX for analog output in 0...20mA (or 4...20mA) configuration.

    The analogue output of DFWIECEXAN is an active analogue output, which is why it must not be powered. The resistance of analogue input shall be:
    - If the output signal is in voltage: Rmin=1K
    - If the output signal is in current: Rmax=300ohm

  • RS485 SERIAL PORT
  • 2 Optional intrinsically safe RS485 serial ports for communication with repeaters and other devices.
    - ASCI protocol
    - Programmable weight string and read command
    - Modbus RTU

    NOTE: it is possible to transmit data directly to the safe area using the protective barrier code PFB485EX

Main certifications:

  • EU Type Examination Certificate (EN 45501:2015)
  • OIML R76
  • EN/IEC 60079-0
  • EN/IEC 60079-11
  • EN/IEC 60079-5
  • EN/IEC 60079-31
  • Certification according to ATEX directive 2014/34/EU and in compliance with IECEx certification scheme, group II category 2GD according to EN/IEC 60079-0, EN/IEC 60079-11, EN/IEC 60079-5, EN/IEC 60079-31.

Certification of assembly:

  • EXDC: ATEX certification of assembly for DFWIECEX

Parts

Part # Description
{#Available Versions}
DFWIECEX IECEX and ATEX certified weight indicator for zones 1, 21, 2, 22. Protection: Ex II 2(2)G(1)G Ex ib [ib Gb] [ia Ga] IIC T4 Gb X for gas and Ex II 2(2)D(1)D Ex tb [ib Db] [ia Da] IIIC T135°C Db X for dust (Ta=0°C/+50°C). Always combine with IECEXPW power supply or IECEXB battery. Includes printed safety instructions and EU ATEX declaration of conformity (EN, DE, FR, ES, IT).
DFWIECEXAN IECEX and ATEX certified weight indicator for zones 1, 21, 2, 22. With integrated, intrinsically safe analogue output and additional cable gland. Protection: Ex II 2(2)G(1)G Ex ib [ib Gb] [ia Ga] IIC T4 Gb X for gas and Ex II 2(2)D(1)D Ex tb [ib Db] [ia Da] IIIC T135°C Db X for dust (Ta=0°C/+50°C). Always combine with IECEXPW power supply or IECEXB battery. Includes printed safety instructions and EU ATEX declaration of conformity (EN, DE, FR, ES, IT).

Options

Part # Description
{#Declaration of ATEX Conformity}
EXDC Declaration of ATEX conformity of the assembly. Ex II 2G IIC T4 Gb X and Ex II 2D IIIC T135°C Db X system (Ta=0°C/+40°C), with relative label of whole system, for Dini Argeo DFWIECEX weight indicator connected a mechanical structure with ATEX load cells (each cell must be certified with CCATEX option). Provided with descriptive document of the assembly and ATEX EU declaration of conformity of the assembly (EN and IT).
{#Power Supply}
IECEXPW IECEx and ATEX power supply for DFWIECEX with 110-230Vac input. Includes input cable for connection to the network (6m) and output cable for connection to the indicator (3m). Protection: Ex II 2(2)G Ex q [ib Gb] IIC T4 Gb X for gas and Ex II 2(2)D Ex tb [ib Db] IIIC T135°C Db X for dust (Ta=0°C/+50°C). Please refer to the instruction manual for more information. A printout of the safety instructions and the EU declaration of conformity ATEX (EN, DE, FR, ES, IT) is included.
IECEXPW24 IECEx and ATEX power supply for DFWIECEX with 24V input (AC or DC). Includes input cable for connection to the network (6m) and output cable for connection to the indicator (3m). Protection: Ex II 2(2)G Ex q [ib Gb] IIC T4 Gb X for gas and Ex II 2(2)D Ex tb [ib Db] IIIC T135°C Db X for dust (Ta=0°C/+50°C). Please refer to the instruction manual for more information. A printout of the safety instructions and the EU declaration of conformity ATEX (EN, DE, FR, ES, IT) is included.
{#Rechargeable Battery}
BTCBIECEX Cable with connector for connecting IECEXB battery to DFWIECEX indicator. Length 1,2m.
IECEXB IECEx and ATEX external rechargeable battery for DFWIECEX, capacity 9Ah, with quick-release connector. Protection: Ex II 2(2)G Ex ib [ib Gb] IIC T4 Gb X for gas and Ex II 2(2)D Ex ib [ib Db] IIIC T135°C Db X for dust (Ta=0°C/+50°C). Charging in safe area through battery charger code IECEXCB. See instruction manual for more information. Printout of safety instructions and EU declaration of conformity ATEX (EN, DE, FR, ES, IT) is included. To be combined with BTCBIECEX cable for connection to DFWIECEX indicator.
IECEXCBAL IECEXB battery charging kit (recharge in safe area). Composed by certified battery charger mod. IECEXCB and power supply with 230Vac socket (VDE cable)
PWCORDUKVDE Version with BS1363 power cord (UK plug).
PWCORDAUSVDE Version with AU power cord.
EXSTFA12 Stainless steel bracket for "IECEXB" battery column mounting.
{#Communication Interfaces}
485IECEX Intrinsically safe RS485 serial port , for communication in ATEX zone. Maximum communication distance 200m. (NOTE: for direct communication with devices in safe area, it is necessary to use PFB485EX protective barrier.)
ALM-IECEX Alibi Memory and Calendar Clock for DFWIECEX indicator.
BTH-IECEX Built-in Bluetooth 4.2 (BLE) interface for hazardous area. Maximum communication distance 10 m. Available only for DFWIECEX indicators. Installation service included.
{#Digital Input / Output}
IECEX4IN4OUT Card with 4 opto-isolated digital inputs and 4 outputs , intrinsically safe, for piloting devices in hazardous areas. To be used in conjunction with intrinsically safe voltages. For further information consult the instruction manual.
PPVIECEX4OUT Din Rail Mount unit with 4 normally closed (NC) Flipper valves. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive and IECEx certification scheme. Degree of protection: Gas: II 2G Ex ia IIC T6…T4 Gb
PPVIECEX2OUT Din Rail Mount unit with 2 normally closed (NC) Flipper valves. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive and IECEx certification scheme. Degree of protection: Gas: II 2G Ex ia IIC T6…T4 Gb
PPVEX 3/2-way, Piezo-pilot, overlapping, normally closed (NC) poppet valve. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive. Degree of protection: Gas: II 1G Ex ia IIC T4/T5/T6 Ga.
PPVIECEX 3/2-way, Piezo-pilot, superposed, normally closed (NC) poppet valve. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive and IECEx certification scheme. Degree of protection: Gas: II 1G Ex ia IIC T6 or T4 Ga and Dust: II 1D Ex ia IIIC T135°C.
PPVIECEX4OUT Din Rail Mount unit with 4 normally closed (NC) Flipper valves. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive and IECEx certification scheme. Degree of protection: Gas: II 2G Ex ia IIC T6…T4 Gb
PPVIECEX2OUT Din Rail Mount unit with 2 normally closed (NC) Flipper valves. Compatible with DFWIECEX digital outputs. Conforms to ATEX directive and IECEx certification scheme. Degree of protection: Gas: II 2G Ex ia IIC T6…T4 Gb
{#Connection Cables}
RSCBTW 4-core twisted shielded cable (2x2x0.34 mm²), for RS485 communication or analogue output. Polyolefin inner sheath. Tinned copper braid shielding. Outer sheath PVC, diameter 7mm. Temperature range: -30 / +80 °C. Minimum bending radius >/= 6 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
EXACB4 4x0.5 mm² armoured cable (suitable for Ex zones). PVC inner sheath. Armour: galvanised steel wire braid. Outer sheath PVC, diameter 7.3 mm. Temperature range: -30 / +80 °C. Minimum bending radius >/= 10 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
EXCB6 Blue shielded cable 6x0.22 mm², only for EX i (2GD) assemblies. PVC inner sheath. Tinned copper braid shielding. Polyurethane outer sheath, diameter 5.8 mm. Temperature range: -40 / +80 °C. Minimum bending radius >/= 7 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
LCCB Shielded cable 6x0.25 mm² (suitable for Ex zones). PVC inner sheath. Tinned copper braid shielding. PVC outer sheath, diameter 5.8 mm. Temperature range: -40 / +80 °C. Minimum bending radius >/= 6 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
LCCBA Armoured cable 6x0.25 mm² (suitable for Ex zones). PVC inner sheath, diameter 5mm. Iron-zinc alloy armour. Transparent PVC outer sheath, 8 mm diameter. Temperature range: -15 / +70 °C. Minimum bending radius >/= 5 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
CB10P Shielded cable 10x0.25 mm² (suitable for Ex zones). PVC sheathing, 7.5mm diameter. Operating temperature: -25 / +70 °C (fixed installation). Minimum bending radius >/= 8 x O.D. €/m. Maximum length that can be ordered: 100 m or multiples.
{#Columns, Supports Brackets, Visors}
EXSTFR AISI 304 stainless steel bracket, adjustable inclination. For mounting IECEX weight indicators on the wall.
EXSTFI AISI 304 stainless steel wall bracket. For mounting IECEX weight indicators.
PANEL-ST Bracket for mounting the indicator on the panel.
{#ATEX 2GD Remote Button Control}
EXPHBN EX 2GD hand control with 2 buttons and cable gland (optional connection cable). Protection II 2G Ex db eb IIC T6 Gb for gases, II 2D Ex tb IIIC T80°C Db for dust.
EXACB4 4x0.5 mm² armoured cable (suitable for Ex zones). PVC inner sheath. Armour: galvanised steel wire braid. Outer sheath PVC, diameter 7.3 mm. Temperature range: -30 / +80 °C. Minimum bending radius >/= 10 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
{#Approval for Sale to Third Parties}
KCEM Plates and Welmec form for legal trade use of a scale. NET PRICE. Service available in combination with a Dini Argeo indicator.
ECEMDOC Printed EU declaration of conformity, EU certificate of verification, test certificate and metrological book (free download from our website, only for approved CE-M products). NET €.
ECEM-AU Single platform/scale legal-for-trade approval for Australia.
{#PC Software}
D-API Software for recording weighing results to a PC (for internal use) with an integrated API library for interfacing with other software.
{#Protection Barrier}
PFB485EX Protection barrier for RS485, for direct connection in safe area. Max cable length: 200m.
RSCBTW 4-core twisted shielded cable (2x2x0.34 mm²), for RS485 communication or analogue output. Polyolefin inner sheath. Tinned copper braid shielding. Outer sheath PVC, diameter 7mm. Temperature range: -30 / +80 °C. Minimum bending radius >/= 6 x O.D. €/m. Maximum orderable length: 100 m (longer lengths available only upon request).
PFANOUTEX Protection barrier for analog current output, 0...20mA or 4...20mA configuration, for direct connection in safe area. Max cable length: 200m. It requires an external 24Vdc power supply.
PFANOUTEXPW 24Vdc power supply for PFANOUTEX protective barrier.
{#PG Cable Glands}
PG7-IECEX PG7 Cable Gland for DFW and 3590 IECEx Series Cable diameter: 4 to 7 mm.
PG9-IECEX PG9 Cable Gland for DFW and 3590 IECEx Series Complete with ferrules and seals. Cable diameter: 4 to 7 mm or 7 to 10 mm.
PG13-IECEX PG13 Cable Gland for DFW and 3590 IECEx Series Complete with ferrules and seals. Cable diameter: 5,5 to 8 mm, 8 to 10,5 mm or 10,5 to 13 mm.

Dini Argeo S.r.l. | Via della Fisica, 20 - 41042, Spezzano di Fiorano, Modena (MO), Italy | Tel.: +39 0536 843418

www.diniargeo.com