Samson TROVIS 3730-3, Руководство по безопасности

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12 SH 8384-3 EN
Required conditions
Particle size and quantity Oil content Pressure dew point
Class 4 Class 3 Class 3
≤ 5 µm and 1000/m³ ≤ 1 mg/m³ –20 °C or at least 10 K below the lowest ambi-
ent temperature to be expected
We recommend installing a supply pressure regulator/filter upstream of the positioner.
For example, the SAMSON Type 4708 Supply Pressure Regulator with 5 µm filter car
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tridge can be used.
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The supply air line has a minimum inside diameter of 4 mm.
Select the cross section and length of the line to ensure that the supply pressure at the po -
sitioner on filling the actuator with air does not fall below the minimum limit.
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The positioner is mounted as prescribed.
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The vent opening at the back of the positioner remains open when the positioner is in-
stalled on site.
Electrical installation
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The positioner is connected to the electric power supply properly as described in the
mounting and operating instructions.
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Only cables whose outside diameters are suitable for the cable glands are used.
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The electrical cables in Ex i circuits comply with the data that planning was based on.
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The cable glands and cover screws are fastened tightly to ensure that the degree of pro -
tection is met.
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The installation requirements for the applicable explosion protection measures are ob -
served.
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The special conditions specified in the explosion protection certificates are observed.
Operation
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When the optional inductive limit contact is used, Code 38 is set to YES.
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The inductive limit contact is adjusted mechanically to meet the specifications.
Tip