Edwards LaserSense HSSD-2

Chapter 3: Programming the unit
LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook 51
Airflow monitoring
Display / Numeric - Address 001-127: 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).
Flow high is the level above which airflow needs to increase to trigger a fault
indication (which may indicate a loose or damaged pipe).
Flow low and Flow high parameters are automatically set up on initial power-up
or when Flow setup is selected (See “Flow setup” on page 50 for details.)
The airflow rates Flow pipe 1 to Flow pipe 4 are for display purposes only and
cannot be changed.
Chart log recording rate
0-19 - Address 000-127: 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.
Table 5 shows the chart log recording rates.
Table 5 : Chart log recording rates
Setting Type Storage interval Time per division on chart log
0 Detector level and alarm level 1 second 10 seconds
1 Detector level and alarm level 5 seconds 50 seconds
2 Detector level and alarm level 12 seconds 2 minutes
3 Detector level and alarm level 30 seconds 5 minutes
4 Detector level and alarm level 1 minute 10 minutes
5 Detector level and alarm level 2 minutes 20 minutes
6 Detector level and alarm level 5 minutes 50 minutes
7 Detector level and alarm level 10 minutes 100 minutes
8 Detector level and alarm level 20 minutes 200 minutes
9 Detector level and alarm level 50 minutes 500 minutes
10 Detector level and airflow 1 second 10 seconds
11 Detector level and airflow 5 seconds 50 seconds
12 Detector level and airflow 12 seconds 2 minutes
13 Detector level and airflow 30 seconds 5 minutes