Online gas-in-oil measurement sensor Hydrocal 1001+, a system with 2 outputs for measuring:
- Dissolved Key Fault Gases TDCG (H2, CO, CH4, C2H2, C2H4, C2H6)
- H2O Moisture
Hydrocal 1001+
DGA Sensor 2 Outputs
Hydrocal 1001+
The HYDROCAL 1001+ is a permanently installed composite gas-in-oil sensor for the analysis of the following dissolved key fault gases (TDCG = Total Dissolved Combustible Gases):
| Fault Gas | TDCG Contribution |
| Hydrogen H2 | approx. 20 % |
| Carbon Monoxide CO | approx. 30 % |
| Methane CH4 | < 5 % |
| Acetylene C2H2 | 100 % |
| Ethylene C2H4 | approx. 32 % |
| Ethane C2H6 | < 5 % |
To provide an even more comprehensive transformer monitoring solution, the HYDROCAL 1001+ analyses additionally the content of Moisture (H2O) in the transformer oil.
Integrating 6 relevant key gases into a total weighted gas concentration and Moisture measurement in oil enables the HYDROCAL 1001+ to react to most transformer faults. It makes the device a compact and cost-effective tool for early transformer fault detection and preventative maintenance.
The HYDROCAL 1001+ is equipped with 2 analog 0/4 ... 20 mA outputs for the dissolved composite gas-in-oil and moisture in oil analysis results and 4 digital relay outputs (Hi-alarm, Hi-Hi-alarm, Moisture-alarm and system function alarm)
Key Advantages
- Composite measurement of Hydrogen (H2), Carbon Monoxide (CO), Methane (CH4), Acetylene (C2H2), Ethylene (C2H4), Ethane (C2H6) and dissolved Moisture (H2O) in the transformer oil
- Relay outputs with light indicators showing potential alerts
- Easy and fast installation without any operational interruption of the transformer
- Compact and resistant design for long-lasting usage
- Communication interfaces ETHERNET 10/100Mbit/s (copper-wired or fibre-optical) and RS 485 to support proprietary communication protocols and sub-station communication protocols MODBUSTCP
Features
- 230V AC or 110V DC supply
- Connection to valve: NPT 1” ½ or DIN-ISO 1” ½
- Degree of protection: IP55
- 4 digital relay outputs (220 VDC/VAC / 2 A / 60 W)
- 2 analog outputs 4-20mA
- Communication: RJ45 interface or multimodal fibre-optical with SC-Duplex interface with ETHERNET or MODBUS®TCP protocol.
| General Technical Characteristics | |
| Optional nominal voltages of auxiliary supply | 120 V -20% +15% AC 50/60 Hz |
| Power consumption | max. 200 VA |
| Housing | Aluminum |
| Dimensions | W 224 x H 195 x D 218 mm |
| Weight | approx. 4 kg |
| Operation temperature (ambient) | -55 °C ... +55 °C |
| Oil temperature (inside Transformer) | -20 °C ... +90 °C |
| Storage temperature (ambient) | -20 °C ... +65 °C |
| Oil pressure | up to 800 kPa (no negative pressure allowed) |
| Connection to valve | G 1½" DIN ISO 228-1 1½” NPT ANSI B 1.20.1 |
| Safety | CE certified |
| Insulation protection | IEC 61010-1:2002 |
Degree of protection | IP-55 |
| 2 x Analog DC output | ||
| Type | Control Range | Default function (Free assignment) |
| 1 Current DC | 0/4 ... 20 mA DC | TDCG Concentration |
| 1 Current DC | 0/4 ... 20 mA DC | Moisture in oil H2O Concentration |
| 4 x Digital Outputs | ||
| Type | Control Voltage | Max. Switching Capacity |
| 4 Relay | 12 V DC | 220 V DC/ V AC, 2A / 60 W |
| Communication |
| ETHERNET 10/100 Mbit/s con cavo in rame / RJ 45 o fibra ottica / SC Duplex |
| RS 485 |
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