Vaisala MHT410 Guía Rápida página 19

Measure and record the installation depth in the chosen valve to achieve
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optimal measurement position for the sensors.
Valve in Radiator Pipe
Moisture and temperature sensors
o
are directly in the oil flow. This is
because water molecule diffusion rate
in oil is slow, and therefore moisture
must be measured in moving oil.
Hydrogen sensor is in the valve area.
o
This is because the hydrogen sensor
needs an accurate temperature
control, and therefore hydrogen must
be measured in still oil.
Choose the output signals: analog and/or digital.
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Choose the electrical wiring option from the four alternatives presented in the
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front foldout pages.
If the transmitter was ordered with the Vaisala cable
CBL210392-5M, the cable is already pre-connected to the
transmitter according to Wiring Option 1.
Make sure you have all the required tools for installing the transmitter. The
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required tools are presented in the front foldout pages and in section
Installation on page 3.
Valve in Transformer Wall
Tip of the probe is level with transformer
inner wall. No part of the probe must enter
the transformer chamber. All sensors
remain within the valve area.
Severe risk of death and of
damage to transformer:
Pay attention to transmitter
installation depth and possible
energized parts inside the power
transformer to minimize electric
shock hazard and equipment
damage.
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