Changing HMP155 probe filter - AWS810

AWS810 Configuration and Maintenance Guide

Document code
M212419EN
Revision
H
ft:locale
en-US
Product
AWS810
Document type
User guide

Over time, the probe filter becomes contaminated with matter that you cannot remove by cleaning. When this happens, the response time becomes longer and measurement accuracy decreases.

CAUTION The Pt100 temperature sensor is soldered to the probe. Do not try to remove it. Due to the operating principles of the sensor, no maintenance is required.
  1. Remove the probe from inside the radiation shield.
  2. Carefully remove the filter from the probe. Holding the filter by the plastic part, rotate the filter counterclockwise and pull it out.
    CAUTION Do not touch the sensor heads.
    1
    Filter
    2
    O-ring
    3
    Pt100 temperature sensor
    4
    HUMICAP humidity sensor
  3. After removing the filter, check the O‑ring and change it if necessary.
  4. Install the new filter carefully without delay.
  5. Install the probe back inside the radiation shield.