Installing refractometer with NPT ½" connection - PR53M - PR53

PR53M Installation Guide
Document code
M213018EN
Revision
B
ft:locale
en-US
Product
PR53
PR53M
Document type
User guide

Plan the installation location carefully before installation. See Choosing installation location.

  • Refractometer
  • Plastic nuts
  • Tube fittings
  • 5-mm Allen key
  • Pliers
These are general instructions for mounting the refractometer. Plan the process‑specific installation according to your requirements. Contact Vaisala technical support for further assistance if needed.
  1. Familiarize yourself with the safety instructions of the installation site.
  2. Make sure the process line is depressurized and empty.
  3. Measure the needed space for the refractometer and the connection.
  4. Use the refractometer support to support the weight of the refractometer. Loosen the bolts with a 5‑mm Allen key if you need to rotate the support.
    The refractometer support prevents the weight of the refractometer from pulling at the non-metallic piping.
  5. Install the refractometer to the process pipes with the nuts provided. Finger-tighten or use pliers to make the connection leak-proof.
    CAUTION Do not use fittings made of metal. The materials' coefficient of heat expansion may cause leakages in the process.
    CAUTION Do not over-tighten the plastic nuts as they may break.
    If you need to remove the flow cell before installing the refractometer, install the tube fittings before the end plate. Tighten the end plate bolts to 3.6 Nm with a 3‑mm Allen key.
  6. Make sure the refractometer is firmly in place and that there is no excessive vibration. Support the piping if needed.