Hydran* M2-X Installation Guide
MA-028 Rev. 2.1, 11-Jun-20
• C2H4: Typical 1.5 ± 0.5 % of concentration
• 10 minutes sensor response (90 % of step change)
*Hydran M2-X H2 accuracy is specified up to 2000 ppm; at
concentrations above 2000 ppm the device continues to
provide trending to 5000 ppm, but potentially outside the
published accuracy specification.
This is because the Hydran M2-X H2 calibration and
performance is optimised and tested in the factory in the
key range of concentrations for transformer diagnostics.
At values >2000 ppm, the H2 level has exceeded IEEE
Condition 4 (Major event at > 1800 ppm), hence customer
action should have already occurred within the specified
measurement range for the M2-X.
• Designed for glass syringe with Luer stop cock; closed with
5/32-in (approximately 4 mm) Allen screw
• Microprocessor; watchdog; clock with battery backup
• Real-time operating system; menu-driven interface
• Gas level, hourly trend and daily trend readings
• Gas level and gas trends alarms
• Moisture level and moisture average alarms
• Alarms due to system fault conditions
• History data logging (Short Term, Long Term, Events and
Service)
• Periodic sensor test
• Calibration, configuration and self-test
• Networking
• Remote embedded software upgrading
• Backlit liquid crystal display (LCD); graphic 128 x 64 pixels
• Keypad 8 keys: Up, Down, Left, Right, Esc and 3 context
functions Alarm Contacts
4 SPDT alarm relays (Type C) which can be configured for:
• Gas (level and trend) and analog High contacts
• Gas (level and trend) and analog High-High contacts
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