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INSTALLATION AND OPERATION MANUAL – OWNER'S RECORD FFD MANUAL – FILTER FAILURE DETECTOR
STEP 2 – Capture Process Information
Capture some representative information from the plant. It is essential that the plant is running normally during this time.
NOTE:
Do not carry out this step on start-up or during a bag-cleaning cycle.
Figure 9: Setup procedure – Step 2
1. To begin collecting information, set the
MODE
slide switch to
SET
. The STATUS LED starts flashing to indicate that data
is being collected.
2. Run the data collection process as long as required (up to two hours maximum).
In general, a longer collection period will provide a more accurate representation of plant activity. However, 15 minutes is
typically sufficient to provide a good, representative sample.
NOTE:
If the FFD sensor is to be referenced against an isokinetic sample, the collection period must be the same
length as the sample run.
STEP 3 – Determine the Dust Level
Using the rotary controls, determine the
Dust level
from the process data collected in STEP 2 above.
•
If the STATUS LED is flashing GREEN, do not adjust the lower control at this stage.
•
If the STATUS LED is flashing RED, proceed as follows:
1. Referring to Figure 10, turn the LOWER rotary control CW, step-by-step through each setting (
×
1,
×
10, …), until the
STATUS LED changes from flashing RED to flashing GREEN.
Figure 10: Setup procedure – Step 3 Calibrate the unit
2. Then slowly turn the UPPER rotary control CCW, until the STATUS LED changes from flashing GREEN to flashing RED.