User Manual

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2.10 Notes on Measurement

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WARNIN

To avoid electric shock accident, before removing or replacing an input

module, confirm that the instrument is turned off and that the power

cord, connection cords, and thermocouples are disconnected.

To avoid the danger of electric shock, never operate the product with an

input module removed. To use the product after removing an input

module, install a blank panel over the opening of the removed module.

Before using the product, make sure that the insulation on the

connection cords is undamaged and that no bare conductors are

improperly exposed. Using the product under such conditions could

result in electrocution. Replace the connection cords specified by Hioki.

CAUTIO

・When making measurements on an AC power line for example, using a voltage

transformer, be sure to connect the voltage transformer ground terminal to

ground.

NOTE

･ If the 8937 VOLTAGE/TEMP UNIT’s input terminal is exposed to a strong

draft, loss of thermal equilibrium at the input may result in measurement

error. When taking measurements under such conditions, arrange the unit in

such a manner that the input terminal is protected for direct exposure to

drafts.

･ If ambient temperature changes suddenly, loss of thermal equilibrium can

result in measurement error. When this occurs, allow the unit to acclimate to

the new temperature for about one hour, then take measurements after

thermal equilibrium is reached.