Manual

Page 22 of 58 FIRElink-400 Air Sampling System – Installation Manual

9-5-0-346/ISS4/OCT10

Setting this function to

Yes puts the detector into automatic flow limit setup mode. This takes a few

minutes to set the flow fault thresholds based on the current flow rates.

1.1.1 Airflow Monitoring (Display / Numeric - Address 001-127)

Setup Menu > Air Flow

There are separate Sensor pipe, Flow low, Flow high and Flow pipe parameters for each

pipe 1 to 4 on the detector. For example,

Flow pipe 1 indicates the current airflow rate for pipe 1.

Sensor pipe 1 to Sensor pipe 4 are used to enable or disable flow sensing on the specified

pipe inlet of the detector. If any pipe inlets are unused, set the relevant flow sensor function for the pipe

inlet to

No to avoid unwanted flow faults.

Flow low is the level below which airflow needs to be reduced to trigger a fault reading (which may

indicate a blocked pipe) and

Flow high is the level above which airflow needs to increase to trigger a

fault indication (which may indicate a loose or damaged inlet pipe).

Flow low and Flow high parameters are automatically set up on initial power-up or when Flow

setup

is selected (see section 231156696.01.1.1 “Flow Setup (Yes/No - Address 001-127)” on page

21).

The airflow rates

Flow pipe 1 to Flow pipe 4 are for display purposes only and cannot be

changed.

1.1.1 Chart Log Recording Rate (Numeric - Address 000-127)

Setup Menu > Miscellaneous

This function controls how frequently the detector and alarm level or flow rates are stored in the Standard

Detector or Command Module internal chart recorder log.

The chart log recording rates are as follows:

Setting Type Storage Interval Time per Division on Chart Log

0 Detector Output 1 second 10 seconds

1 Detector Output 5 seconds 50 seconds

2 Detector Output 12 seconds 2 minutes

3 Detector Output 30 seconds 5 minutes

4 Detector Output 1 minute 10 minutes

5 Detector Output 2 minutes 20 minutes

6 Detector Output 5 minutes 50 minutes

7 Detector Output 10 minutes 100 minutes

8 Detector Output 20 minutes 200 minutes

9 Detector Output 50 minutes 500 minutes

10 Flow Recording 1 second 10 seconds

11 Flow Recording 5 seconds 50 seconds