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Selecting the type of gas monitored for each sensor
The switch number 3 is used to select reading the type of gas that the probe is connected to detect.
The LEL reading is obtained by shifting the switch to ON.
Explosive gas.
The ppm reading is obtained by shifting the switch to OFF
.
Toxic gas.
Positive Safety- Working mode of the relay and the main alarm
Switch 1 – Selection of the positive safety
In the ON position, the positive safety function is enabled.
The relay is energized after performing the step of waiting and switches when the BX150 is main alarm
In the OFF
position, the positive safety function is disabled.
The relay is energized only when the BX150 goes into the mainl alarm
Switch 2 - Working mode of the main alarm relay.
In the ON
(continuous) position, the relay remains closed until the N button is pressed.
In the OFF
(impulse) position, the relay remains closed for 20 seconds, and then disenergizes afterwards.
Micro-switches 1 Positive safety
Micro-switches 2 Working mode of the main alarm
relay
Micro-switch (3) to select the type of gas
monitored.
Positione ON reading in LEL - Explosive gas
In posizione OFF lettura in ppm - Toxic gas
Description of Micro-switches
Summary of Contents for BX150
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