4. Maintenance
4.1. Maintenance Schedule
Procedure
Section
Frequency
Sample Flow Check
4.2.1.
Monthly
Sheath Flow Check
4.2.2.
Monthly
Manual Zero Air Check
4.2.4.
Monthly
Filter Changes
4.2.5.
6 to 12 months
Inlet Cleaning
4.2.6.
3 Months
Optical sensor factory
calibration
Contact Aeroqual
12 Months
Note 1: Suggested intervals for maintenance procedures may vary with sampling intensity and
environmental conditions
4.1.1.1.1.1.1.
Note 2: All checks should be carried out during the initial commissioning of the Dust Profiler
4.2. Maintenance Procedures
4.2.1. Sample Flow Check and Adjustment
A set flow rate is essential to ensure consistency in the measurement. To measure the flow, remove
the TSP head and connect the volumetric flow meter to the top of the inlet using the adaptor supplied
with the instrument. Ensure the flow meter is on a steady surface before reading the flow rate.
Note 1: The adaptor tubing should be connected to the TOP of the volumetric flow meter
(negative flow)
Note 2: The flow should be 1.0 LPM
The inlet flow can be adjusted via the flow adjuster on the exhaust line.
If the flow is
greater than
1.0 LPM then
close the exhaust flow screw
(turn clockwise) until
1.0 LPM is achieved.
If the flow is
less than
1.0 LPM then
open the exhaust flow screw
(turn anticlockwise) until
the flow is 1.0 LPM.
