Product Details

Hydrogen + Moisture Detection Monitor Calisto

Adiradh offers the Doble Calisto Hydrogen + Moisture Detection Monitor for online monitoring of power transformers and other oil-filled electrical equipment. It measures dissolved hydrogen and moisture in transformer insulating oil. Therefore, it helps users track changes in oil conditions and identify early signs of possible transformer faults. Hydrogen is an important indicator of electrical faults inside transformers. Similarly, moisture levels provide useful information about the condition of transformer insulation. Moreover, continuous monitoring helps maintenance teams observe changes without depending only on regular oil sampling. In addition, the monitor provides stable hydrogen readings, even at low gas levels. It also tracks moisture changes as transformer load conditions vary. As a result, users can better understand transformer health and plan maintenance work. Furthermore, its online monitoring system supports condition-based maintenance. Thus, Calisto helps utilities and industrial plants monitor transformer oil and assess equipment health over time.

Overview

The Doble Calisto Hydrogen + Moisture Detection Monitor is an online monitoring system developed for power transformers. It measures dissolved hydrogen (H2) and moisture in transformer insulating oil. These two values help users assess transformer health and detect possible problems. Moreover, continuous measurement allows maintenance teams to track changes in oil conditions over time.

The monitor uses a hydrogen measurement cell and an oil-based moisture sensor. Therefore, it can provide ongoing information about hydrogen levels and moisture content. Its hydrogen measurement range is 0 to 50,000 ppm, with a lower detection limit of 2 ppm. Meanwhile, its moisture measurement range is 2 ppm to saturation, with relative saturation readings from 2% to 100%.

In addition, Calisto supports DNP3 and Modbus communication protocols. Optional IEC 61850 communication is also available. Consequently, users can connect the monitor to suitable substation control and monitoring systems.

Brochure for Hydrogen + Moisture Detection Monitor

About Product

The Doble Calisto is an online dissolved gas analysis (DGA) and moisture monitoring instrument for power transformers. It measures two key parameters in transformer insulating oil: dissolved hydrogen concentration and moisture content. Hydrogen levels can indicate electrical faults, including partial discharge and other developing problems. Meanwhile, moisture measurement helps users assess water content in transformer oil and its effect on insulation.

The monitor uses a proprietary Morgan Schaffer hydrogen measurement cell. In addition, it has an oil-immersed relative saturation (RS) sensor for moisture measurement. Oil-immersed PTFE tubing supports gas extraction. The hydrogen measurement range is 0 to 50,000 ppm, while the lower detection limit is 2 ppm. Furthermore, moisture measurement covers 2 ppm to saturation, with relative saturation readings from 2% to 100%.

Calisto also includes an oil circulation system and flow monitoring. Moreover, its design supports vacuum-tolerant operation and use in substation environments. These features help maintain stable operation during continuous transformer monitoring.

Technology & Benefits

The Calisto Hydrogen + Moisture Detection Monitor uses online measurement technology to track dissolved hydrogen and moisture in transformer oil. Its hydrogen sensor provides stable readings, even at low gas levels. Therefore, users can monitor changes in hydrogen concentration and look for signs of developing transformer faults.

Similarly, its oil-immersed moisture sensor measures relative saturation in transformer oil. This information helps maintenance teams understand how moisture levels change with transformer load. In addition, the built-in oil circulation and flow monitoring systems support the measurement process. The monitor also uses continuous enclosure and oil conditioning to maintain suitable operating conditions.

Furthermore, Calisto supports DNP3 and Modbus communication. Optional IEC 61850 communication is also available. As a result, users can connect monitoring data to suitable substation systems. Moreover, its online measurement helps reduce dependence on manual oil sampling for continuous monitoring. The system also supports transformer dry-out and degassing operations. Consequently, maintenance teams can use the collected data to support transformer condition checks and maintenance planning.

Key Features

• Online dissolved hydrogen (H2) monitoring.
• Continuous transformer oil moisture measurement.
• Hydrogen measurement range of 0 to 50,000 ppm.
• Low hydrogen detection limit of 2 ppm.
• Moisture measurement range of 2 ppm to saturation.
• Relative saturation measurement from 2% to 100%.
• Morgan Schaffer hydrogen measurement cell.
• Oil-immersed relative saturation moisture sensor.
• Oil-immersed PTFE tubing for gas extraction.
• Built-in oil circulation and flow monitoring.
• Continuous enclosure and oil conditioning.
• DNP3 and Modbus communication protocols.
• Optional IEC 61850 communication.
• Vacuum-tolerant operation.
• Substation-ready communication electronics.
• Moisture and solubility settings for common insulating fluids.

Applications

• Online power transformer monitoring.
• Dissolved gas analysis (DGA) of transformer oil.
• Early detection of possible transformer faults.
• Transformer insulation moisture monitoring.
• Electrical substation monitoring.
• Industrial power transformer monitoring.
• Oil-filled electrical equipment monitoring.
• Transformer fleet condition monitoring.
• Monitoring during transformer dry-out operations.
• Transformer degassing process monitoring.
• Long-term transformer health assessment.

Advantages

• Provides continuous hydrogen and moisture readings.
• Helps identify early signs of transformer faults.
• Supports transformer insulation condition checks.
• Provides stable readings at low hydrogen levels.
• Helps track moisture changes with transformer load.
• Reduces dependence on regular manual oil sampling for continuous monitoring.
• Supports connection with substation monitoring systems.
• Allows remote monitoring through suitable communication systems.
• Provides useful data for maintenance planning.
• Supports condition-based transformer maintenance.
• Helps users track transformer oil conditions over time.

Adiradh Energy offers Hydrogen + Moisture Detection Monitor Calisto in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur; Durgapur; Kharagpur; Raigarh; Bhilai; Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities