IGD’s Sentinel+™ 2-Wire protocol allows the 750 series to communicate over the detector power cables. There is no specific polarity for cable connections.
Any mix of safe area gas detectors or ATEX detectors of any type can be networked together along with I/O cards, illuminated signage, alarms etc.
This reduces cabling, speeds install and reduces errors. The installed systems have improved reliability from the reduced number of terminations and from IGD’s continuous monitoring built into the Sentinel+™ protocol. Data is continuously monitored, not just for gas readings but also internal diagnostics, calibration etc. ensuring maximum system availability.
With only 2 wires for power and communication, existing systems can be easily upgraded using the existing cabling.
There is the option to add more detectors and accessories where required. Each 750 Series detector has multiple I/O options as well as being a gas detector. This makes adding signalling or control functions to the system very simple, for example; cable a beacon sounder to the nearest available detector or add control for a solenoid valve.
Use the additional ports on the detectors to read in other analogue 4-20mA signals, pressure, flow, temperature. If it's a 4-20mA signal then you can read it into the detector and then set alarms against it in just the same way as the gas detectors. Two controller versions are available with a comprehensive range of interfaces .