TTH300

TTH300

Head-mount temperature transmitter. Redundancy / sensor drift monitoring by two inputs. Highly configurable, for top requirements. 4 to 20 mA HART, PROFIBUS PA and FOUNDATION Fieldbus communication. Also available with Ex-approvals and SIL declaration of conformity. LCD indicator including device configurability optional.

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    • Two universal sensor inputs, each for RTD, thermocouple, Ω, mV
    • Functional safety SIL 2 / SIL 3 in accordance with IEC 61508 (HART variant)
    • Various sensor error-calibration possibilities
      – One point, two point, Callendar-van-Dusen, freestyle characteristics with 32 supporting points
    • Sensor backup / automatic sensor redundancy switching (2 x Pt100 3-wire connection and further sensor combinations)
    • Redundancy behavior configurable for increased availability, increased safety or increased accuracy (HART variant)
    • Output signal
      – 4 to 20 mA, HART 5 and HART 7 (switchable)
      – PROFIBUS PA 3.01
      – FOUNDATION Fieldbus ITK 5.x
    • Accuracy 0.1 %, long-term stability 0.05 % per year
    • Wire break / corrosion monitoring in accordance with NE 89
    • Device status signaling and freely configurable diagnostic categorization with diagnostic history according to NE 107 (HART variant)
    • Event monitor for logging critical events (HART variant)
    • Configuration monitor for configuration changes (HART variant)
    • Turnable LCD indicator with operating buttons (option)
    • Approvals for explosion protection
      – ATEX, IECEx, zone 0
      – FM / CSA
      – EAC, EAC-Ex
      – NEPSI

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