Oldham BM25, Руководство по эксплуатации

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2.1. Gas detector recharge connector
It is recommended that the charger provided by INDUSTRIAL SCIENTIFIC- be used outside of the
ATEX (hazardous) area. When the recharging is done by a charger other than the one provided by
INDUSTRIAL SCIENTIFIC-OLDHAM, its characteristics must not exceed a voltage of 30VDC
and a current of 30 mA
2.2. Connector for alarm outputs / fault and digital TOR inputs
The characteristics of static relay contacts inputs opto isolated and built into the gas detector are:
U in = 30 V max I in = 150 mA max
The output characteristics of TOR digital inputs built into the gas detector are:
U out = 5 V max I out = 50 mA max L out = 8 mH C out = 7 µF
Only zero voltage circuits can connect to the digital inputs, i.e. Uin = 0V and Iin = 0A.
Caution : The two previous circuits are separate intrinsic circuits. The cables connected to the ends
of these circuits must comply with the requirements for intrinsically safe circuit wiring:
type of cables, insulation voltage, insulation, linear capacity and inductance. Refer to
national and international standards, for example EN 60079-14.
A system log should be established by the person responsible for the installation as explained above.
2.3. External power connector for maintenance of the battery pack
The output characteristics of each external power source connected to the BM25 are:
- Either: Po=0.81W Uo =28V Io=115 mA Lo=2 mH Co=0.08µF
For instance power supply 5302B by Pr. Electronics
II (1) G [ EEx ia ] IIC DEMKO 99ATEX126257)
- Or: Po=1.3W Uo =23.5V Io=160 mA Lo=1 mH Co=0.132µF
For instance BXNEO1 by Georgin
I (M1) II (1) G/D [ EEx ia ] I [ EEx ia ] IIC LCIE 02ATEX6104X)
The BM25 gas detector has a Co=0 and a Lo=0 on external power connectors.
It is possible to connect two external power supplies on the connector in accordance with the rules
specified in the previous paragraph.
2.4. Connector accessories / options
Figure 1 shows the different connection options for the BM25.
The connectors are located on the BM25 sides.
Remark : the unused connectors will be equipped with their cap.
2.5. Reference for electrical signals of connectors