Connecting the refractometer wiring - PR53M - PR53MEX - PR53

PR53M, PR53MEX Installation Guide
Product status
Document code
M213018EN
Revision
C
ft:locale
en-US
Product
PR53M
PR53MEX
PR53
Document type
User guide
  • Cable gland or thread adapter
  • Cables
  • TX20 Torx key
  • 3-mm Allen key (PR53EX)
  • 19‑mm wrench
  • 22‑mm wrench
  • 24‑mm wrench
WARNING Make sure that electrical connections adhere to local and state legislation and regulations.
WARNING Make sure that you prepare and connect only de-energized wires.
PR53EX models include an additional grounding terminal. The terminal is not included in the PR53 models.
  1. Switch off all communications to the process.
  2. Loosen the bolts on the refractometer cover using a TX20 Torx key, or 3-mm Allen key (PR53EX). Be careful not to drop the bolts.
  3. Remove the dust plug from the refractometer. If you are using the connection on the right side, remove the dummy plug using a 19-mm wrench or a flat head screwdriver.
  4. Install the cable gland or thread adapter depending on your site requirements.
    1. Cable gland option: Disassemble the cable gland into three parts. Connect the upper part of the cable gland to the refractometer and tighten to 5 Nm using a 22‑mm wrench.
    2. Thread adapter option: Tighten the thread adapter to 5 Nm using 24‑mm wrench.
  5. If you removed the dummy plug, install it on the connection that is not used. Tighten it with a 19-mm wrench or a flat head screwdriver.
  6. Install the cable according to the connection type.
    1. Cable gland option: Feed the cable through the cable gland. Ground the cable gland by removing the 15‑mm sleeve from the cable, brushing the metal braid upwards and folding it over. Make sure the wires reach the terminal. Tighten the cable gland to 5 Nm using a 22‑mm wrench. Make sure the wires are not twisting.
    2. Thread adapter option: Feed the cable through the conduit pipe and thread adapter. Make sure the wires reach the terminal. Connect the conduit pipe to the thread adapter and tighten to 5 Nm using a 24‑mm wrench. Make sure the wires are not twisting.
      CAUTION If the conduit pipe is metal, it grounds the cable at the refractometer side. If the conduit pipe is not metal, use the SHIELD connection at the terminal block (shown in the figure). For the power side grounding, follow local regulations.
  7. CAUTION Do not connect the power cable (VIN+/VIN-) to the analog output terminals. This can damage the refractometer.
    Connect the wires inside the refractometer.
    1. Digital connection
    2. Analog, mA connection
  8. Reinstall the refractometer cover. Tighten screws to 2 Nm using a TX20 Torx key, or 3-mm Allen key (PR53EX). Be careful not to over-tighten. The screws may break.
    If you are connecting to Indigo520 transmitter, see Indigo500 User Guide (M212287EN) for wiring options.
  9. If needed, use the grounding screw on the metallic light cover to ground the refractometer body.