GE H201Ti DGA monitor

The 201Ti’s composite-gas sensor provides the world renown “Hydran gas value” using fuel cell technology (described as fixed instruments - method 3 in the standard). It responds 100% to Hydrogen (general fault gas) and is also sensitive to Carbon Monoxide (overheated paper), Acetylene (arcing) and Ethylene (overheated oil), thus covering all the main transformer failure root causes. Because the monitoring unit mounts on a single valve and uses Dynamic Oil Sampling, there is no need for a pump or extra piping to connect to different valves. Due to its uncomplicated features and the easily understood information it provides, the 201Ti has been amongst the monitors of choice for many years, with one of the largest installed base of any monitor. Configurable Alarms 

• An alarm is raised when an abnormal level of fault gas is detected. 

• Two alarm levels (one for Alert and one for Alarm) can be set to show increasing severity. 

• Alarms can be set on gas ppm levels or on gas rate of change (ROC) over an hour or a day. 

• Automatic self-test every 15 days will trigger service alarm if it detects a fault, including power failure, oil valve closed, sensor or battery needing replacement. Communication 

• Local LCD display of the real-time dissolved gas ppm value. 

• Analogue output (4-20mA) of the dissolved gas ppm value. 

• Digital output of registers using Modbus or Hydran protocols over isolated RS-485 

• 3 dry contact relays also available 2 for the fault gas alarms and one for the service alarm. 

Key Benefits 

 • Continually measures main H2 fault gas 

 • Local LCD display 

• Communicates gas ppm value remotely 

 • Proven and continuously improved design (over 30,000 units sold) 

• Easy to install, single valve mount

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