Airnet II Particle Sensor Operations Manual
Page 5-1
Chapter 5
Maintenance and Performance Checks
There is nothing within the Airnet II particle sensor that is user-serviceable. You can,
however, clean the sensor’s housing and repair or replace cables and cable
connectors.
Cleaning the Sensor’s Housing
The Airnet II particle sensor is housed in a sturdy Polycarbonate or Stainless Steel 316L
housing (based on the version ordered) and should provide many years of trouble-free
performance. Periodically it may be helpful to wipe the case with a clean, lint-free cloth
moistened with deionized water or a mild cleanser.
Cable Connectors
Occasionally a cable connector may be damaged through an accident. The RS-232 and
UTP Ethernet connections are somewhat fragile. If a connector is damaged, be careful
not to aggravate the problem by forcing a cable into a damaged connector. A Particle
Measuring Systems Service Representative can repair or replace damaged connectors.
Performance Checks
Complete the following procedures to verify that your instrument is operating
properly.
Airflow Rate Check
The sample flow is factory-set using a critical orifice and is not adjustable. If the flow
drops by 15 %, there may be a blockage in the critical orifice or inlet jet.
The following instrument(s) will be needed:
•
A 0.1 CFM ± 5% flow meter for models 301, 501, 501A
•
A 1.0 CFM ± 5% flow meter for models 510, 510XR, 510s and 510s XR
