WARNING Protected installation using galvanic isolators or Zener barriers is mandatory in a hazardous environment. |
Galvanic isolators and Zener barriers are available from Vaisala as accessories. See Spare parts and accessories. |
CAUTION Ensure that the transmitter is powered correctly. 12 V DC is the minimum voltage in all conditions, measured at the transmitter screw terminals. If the supply voltage is less than 12 V DC, the analog output current can be erroneous. |
It is recommended to use ferrules on the stripped wires to help ensure a secure connection with the screw terminals. |
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Prepare the cabling wires as required in your application (cabling either through 1 or
2 lead-throughs).
- Strip the cable wires: it is recommended to attach ferrules to the contact ends of the wires.
- Open the cable gland and insert a suitable length of the cable inside the transmitter through the cable gland.
- Tighten the cable gland: refer to the instructions of the glands used in your application for maximum tightness.
- If your installation does not require using both lead-throughs, plug the unused lead-through with an Ex compliant seal.
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Connect the screw terminal wiring as required in your application. For protected
installation wiring diagrams, see Wiring with galvanic isolators and Wiring with Zener barriers.