ATEX combination unit consisting of a temperature controller, limiter, and power selector for ATEX heaters, T1-T4

• Suitable for all ATEX heaters and all temperature classes
• Protection type: Ex-i (intrinsically safe)
• Equipped with 2 x PT100 sensors, ATEX-certified
• User-friendly and intuitive operation
• Integrated temperature switch (shutdown temperature from approx. 90 °C)
• Circuit protection via rear terminal (internally accessible)
• Measurement display with 7-segment LEDs
• Switching point tolerance < 1K
• Controller hysteresis = 2K
• Relay output alarm with 1 CO contact, 5A, 250 V
• Intrinsically safe and galvanically isolated connection of PT100 resistance thermometers in 2-wire or 3-wire configuration per DIN EN 60751
• Includes explosion protection documentation
• Installation: wall-mounted or baseplate mounting
• Ambient temperature range: -20 °C to +40 °C

Specifications

• Power supply: 230 V
• Load current: Max. 25A (external protection circuit 25A)
• Sensor: PT100 (Ex-i)
• Intrinsically safe measurement circuit:
  • Ex ib IIC: Uo=6.3 V, Io=22 mA, Po=35 mW, max. Co=1.5 μF, max. Lo=10 mH
  • Ex ib IIB: Uo=6.3 V, Io=22 mA, Po=35 mW, max. Co=8.2 μF, max. Lo=10 mH
• Protection class: IP64 per EN 60529
• Measurement range: 0–450 °C
• Cable glands:
  • 1 x M25 for power supply
  • 1 x M25 for heating cable
  • 1 x M16 for sensor cable
• Dimensions (L x W x H): 260 x 160 x 135 mm
• Weight: Approx. 6 kg
• Material: Aluminum
• Certified for:
  • Ex zones 1 and 2 (gas)
  • Ex zones 21 and 22 (dust)
• Explosion groups:
  • IIC (hydrogen)
  • IIIC (static dust)
• Temperature classes: T1, T2, T3, T4

Certifications

• EN 60079-7:2003 – Protection standard “e” (increased safety)
• EN 60079-11:2007 – Protection standard “i” (intrinsic safety)
• EN 60079-18:2004 – Protection standard “m” (encapsulation)
• EN 60079-31:2009 – Protection standard “t” (protection by enclosure)

Additional Information

• Includes complete documentation
• ATEX marking:
  • Ex II 2G Ex e ib [ib Gb] mb IIC T4 Gb
  • Ex II 2D Ex tb IIIC IP6X T90 °C Db