Siemens SITRANS AS100, Руководство по эксплуатации

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Interconnection
SITRANS AS100
22
Operating Instructions, 06/2016, A5E31952194-AB
Extended Temperature Version (ET)
①
Vsup: 20 to 30 V DC supply input
②
Vsens: Analog output 0.08 to 10 V DC nominal
③
shield--tied to Sensor casing
*Sensor range selection
high sensitivity range = red and orange to Vsup +
low sensitivity range = red to Vsup + and orange to Vsup -
Note
•
Connect shield to ground at one end only!
•
If Sensor mounting is grounded, leave cable shield disconnected
•
If Sensor mounting is not grounded, connect cable shield to ground
The longer the cable, the more susceptible it is to noise and earth loops. We recommended
using cable with heavy gauge conductors and good RF/electrical shielding (copper braid rather
than drain and foil). A proper junction box close to the sensor is an ideal location not only to
extend the cable, but to also to configure the wiring for high or low sensitivity range operation.
This table provides a guideline for suitable wire gauges where distances are considerable.
Maximum distance between Sensor and supply (24V or Control Unit)
wire size distance
AWG mm mm
2
* meters feet
24 7 x 0.20 0.22 500 1600
22 7 x 0.25 0.35 800 2600
20 10 x 0.25 0.5 1200 3900
* nominal wire size