LumaSense Technologies 3434i SF6 Leak Detector - Manual (Page 81)

Chapter 7
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BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S
Page 81 of 191
Limit: enables you to define the gas concentration that will trigger
the alarms. The acceptable values are shown in Table 7.7.
Select limits: this defines the concentration level when the alarm
is triggered. This parameter must be defined.
Table 7.7 The range of acceptable values and default value of the alarm
limit for the gases
Display Text Acceptable Values Default
Value
GAS A HIGH ALARM LIMIT 1
n
à
_____PPM
0-1000000ppm Blank
GAS A HIGH ALARM LIMIT 1
n à _____mg/m3
Depends on the molecular
weight of the gas
Blank
n à = A to W
The Rolling Average option enables you to prevent the alarm
being triggered by sudden, small fluctuation in the gas
concentrations by using values, which are averaged over a defined
period of time. The averaging time is defined in minutes. The
acceptable values are: 1 to 999 mins, and the default value is 10
mins.
Action: this provides you with 3 ways to trigger the alarm. One or
more of the options can be selected simultaneously.
-Monitor Beep: when an alarm is triggered the monitor makes a
beeping noise.
Monitor Relay 1 & Monitor Relay 2: selecting these options
enable you to connect the alarms to a variety of either audio (for
example, a siren) and/or visual (for example a flashing light)
alarm systems.
Active Alarms: only the gases, which you have selected and
activated, are shown in this field.
7.2.1 Measurement Set-up – Stand-alone Use
The philosophy of the instructions is described in Chapter 3 .
To enter the Set-Up Tree, press SET-UP and the monitor displays
the following screen text.