ABB TTF350 Operating Instructions Manual page 48

Field mounted temperature transmitters

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2-sensor input functionality / Dual sensor mode

Fig. 29: Alarm pulse signaling during sensor drift overshoot

1 Temperature characteristic

for sensor 1 ------

2 Temperature characteristic

for sensor 2

3 4 ... 20 mA output signal

4 max. sensor drift differential

(e.g. Δ > 1 °C)

5 Alarm pulse:

•

Off

•

On -> Configurable pulse width

•

Continuous pulse

6 Sensor drift detection time period

(e.g, 2 min.)

TTF350

A00135

OI/TTF350-EN

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