PBA have had considerable experience with Vaisala products for monitoring of SF6, moisture in oil measurement, multi-gas DGA monitoring, and single gas monitoring. We are the Authorised Vaisala Distributors for Vaisala's power products portfolio.
Vaisala offers a range of specialised online monitoring equipment for the power industry. The reliable online measurement of dissolved gases and moisture in transformer oil, dew point, humidity, density, temperature, and pressure helps to ensure that high-voltage assets can operate at maximum efficiency while supporting the planning of predictive maintenance designed to extend asset lifetime and minimize unexpected outages.
- Over 80 years of measurement experience
- Thousands of installations in the power industry
- Service centers in Finland, China, Japan, and the US
Power transformers are critical components in any electricity grid. Age, increased load levels, and network disturbances all take their toll on transformers, leading to an increased risk of unpredictable faults and outages. With online and real-time condition monitoring of power transformers utilities can keep them operating safely and with maximum efficiency, while monitoring data supports the planning of timely maintenance actions that can extend operational lifetime and prevent unexpected and costly outages.
For the power generation and transmission industry, Vaisala provides unique measurement equipment for online monitoring of transformer insulation oil. Their reliable solutions support in planning and optimizing the preventive maintenance of high-voltage assets, and thus help to extend the asset lifetime and reduce the risk of unexpected outages.
Keep reading to learn more about the right fit for your application and the different parameters Vaisala can measure.
SF6 Gas Insulated Equipment
DPT145, Multiparameter transmitter for SF6 Gas
- Measured parameters: dew point, pressure, temperature
- Calculated parameters: SF6 density, normalized pressure, dew point in atmospheric pressure, ppm
- Modbus RTU
- Easily integrates with fixed or portable systems
Online Dissolved Gas Analysis (DGA)
OPT100, Maintenance free Multi-gas DGA
- Hydrogen H2
- Carbon monoxide CO
- Carbon dioxide CO2
- Methane CH4
- Ethane C2H6
- Ethylene C2H4
- Acetylene C2H2
- moisture in oil in ppm
- Total Gas Pressure
The primary design focus of the OPT100, was for reliability, with no consumables, no regular maintenance, and auto calibration.
- Hydrogen H2
- Moisture in Oil
- Temperature
The MHT410 has been designed to be robust, and maintenance free.
The MHT410 can also be integrated with Vaisala's Indigo520 transmitter
- Industrial Host Interface with touchscreen
- IP66 and NEMA 4 rated metal enclosure
- 4 x Analogue Outputs
- 2 x Relays
- Ethernet interface for Modbus TCP and web interface
- 2 probe options
Moisture in Oil (Oil processing plants, transformer monitoring)
MMP8, Moisture in oil probe with adjustable installation depth for continuous monitoring
- Continuous online measurement of moisture in oil and temperature
- Measurement temperature range -70 ... +180 °C
- Measurement accuracy up to ±0.02 aw / 2 %RS
- Temperature measurement accuracy up to 0.1 °C
- Proven Vaisala HUMICAP® sensor, used for over 15 years in oil applications
- Removable probe with ball valve
The MMP8 can also be integrated with Vaisala's Indigo520 transmitter
- Industrial Host Interface with touchscreen
- IP66 and NEMA 4 rated metal enclosure
- 4 x Analogue Outputs
- 2 x Relays
- Ethernet interface for Modbus TCP and web interface
- 2 probe options, allowing monitoring for the outlet and inlet for oil processing
MMT162, Moisture in oil probe for OEM and transformer applications
- Small size, allowing easy integration
- Measurement temperature range -40 ... +80 °C
- Measurement accuracy up to ±0.02 aw / 2 %RS
- Temperature measurement accuracy up to 0.2 °C
- Proven Vaisala HUMICAP® sensor, used for over 15 years in oil applications
MM70, Portable Moisture in Oil Meter
- Allows In-line process checking through ball valve, no need to drain the oil
- Measurement temperature range -40 ... +100 °C
- Measurement accuracy up to ±0.02 aw / 2 %RS
- Temperature measurement accuracy up to 0.2 °C
- Rugged and reliable construction
- Excellent pressure and temperature tolerance
Dewpoint (transformer drying, testing delivered transformers)
DMP8, Dewpoint probe with adjustable installation depth for pressurised applications
- Dew point measurement range -70 ... +80 °C Tdf
- Dew point measurement accuracy up to ±2 °C Tdf
- Operating pressure 0 ... 4 MPa (0 ... 40 bar)
- Temperature accuracy up to 0.1 °C
- Withstands condensation, oils, dust and most chemicals
- Removable probe with pressurized process when used with ball valve (if process pressure is less than 10 bar)
DMP7, Dewpoint probe with small probe head for tight spaces
- Dew point measurement range -70 ... +80 °C Tdf
- Dew point measurement accuracy up to ±2 °C Tdf
- Operating pressure 0 ... 1 MPa (0 ... 10 bar)
- Temperature accuracy up to 0.1 °C
- Withstands condensation, oils, dust and most chemicals
- Small probe for tight spaces
The DMP8 and DMP7 can also be integrated with Vaisala's Indigo520 transmitter
- Industrial Host Interface with touchscreen
- IP66 and NEMA 4 rated metal enclosure
- 4 x Analogue Outputs
- 2 x Relays
- Ethernet interface for Modbus TCP and web interface
- 2 probe options
The DMP8 and DMP7 can also be integrated with Vaisala's Indigo200 transmitter
- Intelligent Host Interface for Indigo probes (DMP8, DMP7, MMP8)
- Wireless interface for configuration and temporary use
- Operating temperature: -40 ... +60 °C, with display -20 ...+60 °C
- LCD color display (optional non-display version for analog model)
- IP65 enclosure
- 24 V power supply input
- Indigo201 model: 3 analog outputs (mA or V)
- Indigo202 model: RS485 with Modbus RTU
- 2 x relays
- Dew point measurement range with DMP74B, -60 ... +20 °C Tdf
- Dew point measurement accuracy up to ±2 °C Tdf
- Operating pressure 0 ... 2 MPa (0 ... 20 bar)
- Temperature accuracy up to 0.2 °C
- Withstands condensation, oils, dust and most chemicals
- Often used to test dry air of installed transformers, with DMP74B probe, and DSC74C sampling cell, utilizing outlet coil to protect the sensor form ambient humidity disturbing the measurement
Humidity, Turbine Inlet Air
For accurate measurement of inlet air humidity allowing for better turbine control and improved performance. Vaisala's humidity monitoring helps the utility operator optimise the temperature and compression of the inlet air, maximising output without risking condensation.
HMP7, Humidity probe for high humidities
- RH accuracy up to 0.8 %RH, Temperature accuracy up to 0.1 °C
- Temperature measurement range -70 ... +180 °C
- Vapor and pressure proof construction
- Probe and sensor warming functions minimize condensation on probe
- Sensor purge provides superior chemical resistance
TMP1, Temperature probe for demanding environments
- Temperature accuracy up to 0.1°C
- Wide Temperature measurement range -70 ... +180 °C
- IPX8 for probe head
The HMP7 and TMP1 can also be integrated with Vaisala's Indigo500 transmitter
- Industrial Host Interface with touchscreen
- IP66 and NEMA 4 rated metal enclosure
- 4 x Analogue Outputs
- 2 x Relays
- Ethernet interface for Modbus TCP and web interface
- 2 probe options, allowing monitoring for the outlet and inlet for oil processing