Key
Duomo gas proving systems
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Duomo gas detection
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Duomo carbon dioxide sensors
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Duomo ventilation interlocks
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Are available direct or from all major stockists
Overall Dimensions
GS300M Fascia & P.C.B. Layout
1. Power On
- Lights when supply voltage is applied. This light flashes during self diagnostics start up.
2. Battery
- Lights when the BX116 is powered by the standby battery.When flashing the standby battery has low charge.
3. Fault
- Indicates a short circuit, sensor fault, loss of signal or incorrect connection of the sensor.
4. Test/Reset
- When pressed checks the sequence and function of the BX116 / Press this to reset the detector after an
alarm or sensor fault condition
5. Zone 1 Indication
- These L.E.D.'s represent the Zone 1 sensors and flash when a sensor is connected.
6. PPM L.E.D.
- This lights when the jumper switch for display data is set to read in parts per million (PPM).
7. Display
- Shows the current reading of gas concentration for the current sensor displayed.
8. Pre-Alarm (Zone 1)
- 8% L.E.L. concentration of gas detected in Zone 1. Pre-alarm relay actuated.
9. Main Alarm (Zone 1)
- 20% L.E.L. concentration of gas detected in Zone 1. Main alarm relay actuated.
10. Pre-Alarm (Zone 2)
- 8% L.E.L. concentration of gas detected in Zone 2. Pre-alarm relay actuated.
11. Main Alarm (Zone 2)
- 20% L.E.L. concentration of gas detected in Zone 2. Main alarm relay actuated.
12. % LEL L.E.D.
- This lights when the jumper switch for display data is set to read in lower explosive limit (LEL).
13. Zone 2 Indication
- These L.E.D.'s represent the Zone 2 sensors and flash when a sensor is connected.
14. No. of Sensors Switches
- DIP switches allowing you to select how many sensors can be attached to the BX116.
15. Display Data Jumper
- Allows you to select (via a jumper) whether the display reads in PPM or LEL.
16. Alarm Threshold Selector
- Allows you to change the threshold at which the unit goes into alarm.
17. Sensor Selector Switches
- Determines which sensors are currently working.
MUST BE OFF TO ACTIVATE SENSOR
.
18. Memory Switches
- Determines whether or not the unit automatically resets after the gas concentration levels drop.
19. Sensor Connection Plug
- Connection for the incoming return cable from the sensor.
20. Sensor Power Supply
- Connections to power the sensors.
21. Relays
- Connections for the relay outputs and fault relay.
22. Power Supply
- Incoming power supply.
318
7
8
9
10
11
12
13
136
124
357
1
2
3
4
5
6
2
1
3
9
10
11
12
7
6
8
4
5
2
1
3
7
6
8
4
5
2
1
3
2
1
3
7
6
8
4
5
2
1
3
Ph
N
ON
2
1
4
3
ON
2
1
4
3
6
5
8
7
ON
2
1
4
3
6
5
8
7
BX116
Multi-channel Gas Detection System
POWER
PRE ALARM
ZONE 1
ZONE 2
MAIN ALARM
1
2
3
PPM
%LEL
4
5
6
PRE ALARM
MAIN ALARM
BATTERY
16
15
18
FAULT
TEST-RESET
7
8
1
2
3
4
5
6
7
8
19
20
22
21
14
17
