2.1.5 Possible Configurations
The Hydran M2-X can be used in three configurations:
• As a stand-alone unit (using its keypad and display, or the Perception software
running on a laptop computer).
• In a network of up to 32 Hydran M2-X’s. Network communications are performed
through an isolated RS-485 link. Networking is described in Chapter 6.
• As a replacement for a Hydran 201Ti in any Hydran 201i System.
2.1.6 Other Features
• Several adjustable alarm conditions relative to gas detection, moisture detection,
analog inputs and system faults.
• Six history files (automatic recording of data): Short Term, Long Term, Events,
Alarms, Service and Sensor card.
• Semimonthly, automatic sensor test and state report.
• Dynamic oil sampling, a pumpless sampling system using thermal convection
cycles.
• Terminal blocks to connect the following items:
– ac power supply.
– Five alarm contacts (four are configurable, and one is assigned to system
fault alarm conditions).
– TDM signal for backward compatibility with Hydran 201Ci controllers (gas
reading).
– Optional I/O interfaces.
– Input and output for RS-485 network link.
• An RS-232 connector for local communications with the Perception software.
• An extremely high immunity to electrical surges, radio-frequency interferences
and electrostatic discharges.
• A very wide temperature range for all-weather outdoor operation.
• Accessories are also available (see Appendix L)
For more details, see the technical specifications in Appendix A.
2.2 External Components
For detailed information on the dimensions of the Hydran M2-X’s enclosure, see
Section A.2.1.
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