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ABOUT GAS
FAQ - Cables
2. What cable should I use to connect the CGS500 sensor?
The maximum cable resistance for the Single Channel and Four Channel controllers is 4 Ohms per line (i.e. 8 Ohms Loop). The following table will give an indication of maximum cable runs for the Single Channel and Four Channel controllers.
2. What cable should I use to connect the CGS500 sensor?
The cable used to connect a CGS500 sensor should be 3-core cable, with stranded copper conductors and an overall screen (shield).
The gauge of cable should be selected to ensure that the cable resistance does not exceed the maximum specified for the controller.
The maximum cable resistance for the Multichannel controller is 10 Ohms per line (i.e. 20 Ohms Loop). The following table will give an indication of maximum cable runs for the Multichannel controller.
| Cable size | Maximum cable length |
| 0.75mm2 | 150 metres |
| 1.00mm2 | 200 metres |
| 1.50mm2 | 300 metres |
| 2.50mm2 | 500 metres |
The maximum cable resistance for the Single Channel and Four Channel controllers is 4 Ohms per line (i.e. 8 Ohms Loop). The following table will give an indication of maximum cable runs for the Single Channel and Four Channel controllers.
| Cable size | Maximum cable length |
| 0.75mm2 | 400 metres |
| 1.00mm2 | 500 metres |
| 1.50mm2 | 700 metres |
| 2.50mm2 | 1200 metres |