MHT410

Monitor Transformer Oil with MHT410

Receive information on transformer fault situations withreliable and robust online transmitter.​​​

The Vaisala Moisture, Hydrogen and Temperature TransmitterMHT410 for Transformer Oil measures directly from representativetransformer oil giving both reliable hydrogen trend as well as fastmoisture data.

It is built to last and doesn’t have wearing parts such asmembrane, pumps, hoses or batteries. Easy to install, the MHT410 isready to use within minutes.

Continuously monitor hydrogen and moisture levels with anin-situ probe is the first step in extending the life of atransformer through implementation of predictive maintenancepractices leading to lower total cost of ownership.

 

 

 

HYDROGEN MEASUREMENT

Measurement range (in oil) 0 ... 5000 ppm

Accuracy (in oil temp. range -20 ... +60 °C)

( -4 ... + 140 °F)                            ±20% of reading or ±25 ppm(whichever is greater)

Repeatability                                  ±10 % of reading or ±15 ppm (whichever is greater)

Min. detection limit                         20 ppm

Typical long-term stability               3 % of reading / year

Cross sensitivity to other gases        < 2 % (CO2, C2H2, C2H4, CO)

Response time                                      63%: 2.5 hours (when sensor is not in reference cycle), 90%: 17

                                                           hours Warm-up time 2 hours, 12 hours for full specification

Sensor Catalytic palladium-nickel alloy film solid-state sensor

 

MOISTURE IN OIL MEASUREMENT

Measurement range (in oil) 0 ... 100 %RS / aw 0 ... 1

Accuracy at 20 °C (+68 °F) (including non-linearity, hysteresis and repeatability)

0 ... 90 %RS / aw 0 ... 0.9                     ±2 %RS (aw ±0.02)

90 ... 100 %RS (aw 0.9 ... 1.0)              ±3 %RS (aw ±0.03)

Sensor response time (90%, at +20 °C ( +68 °F) in still oil) 10 min

Sensor                                                                                           HUMICAP® 180L2

 

TEMPERATURE MEASUREMENT

Measurement range -40 ... +120 °C (-40 ... +248 °F)

Accuracy at +20 °C (+68 °F)                                                            ± 0.2 °C (0.36 °F)

Sensor                                                                                            Pt1000 RTD Class F0.1 IEC 60751

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