Wiring | Radar Tank Gauge |
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4.2Connecting the measuring unit
Terminal compartment
The housing comes with a separate terminal compartment.
Load HART
Minimum load for Hart communication: 250 Ω
Cable entry
Cable gland: M20x1.5 or Pg13.5
Cable entry: G ½ or ½ NPT
Supply voltage
Direct current voltage: 16…36 VDC
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Communication | Terminal voltage | minimal | maximal | |
Power supply Standard | U (20 mA) = | 16 V | 36 V | |
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| Ex | U (20 mA) = | 16 V | 30 V |
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Signal | U (4 mA) = | 11,5 V | 30 V | |
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| U (20 mA) = | 11,5 V | 30 V | |
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Power consumption
Max. 330 mW at 16 V, max. 500 mW at 24 V, max. 600 mW at 30 V.
Current consumption
Max. 21 mA (50 mA inrush current).
Power supply
For stand alone operation recommended via e.g. Varec RN 221N.
mm accuracy
For measurements with mm accuracy the measured variable must be transmitted using HART protocol to ensure the necessary resolution.
28 | Installation and Operations Manual |
