3 GETTING STARTED WP4C
2. Place the WP4C on a level surface. Care should be taken to
minimize temperature gradients that may affect the instrument
while in the field. A Styrofoam box, for example, will help
minimize temperature effects.
3. Plug the 12-volt inverter to the 12-volt output of the vehicle,
or directly to the battery itself.
4. Plug the WP4C to the inverter, and turn it on. When the
instrument is on, it draws up to 1 amp. Check the rating of
your battery if you want to know how long it will power the
instrument (for example, if your battery is rated for 60 amp
hours, it will work for 60 hours when the vehicle is not running.
5. Allow the instrument to warm up for 15 to 30 minutes as you
would in the lab. Check the calibration of the instrument before
proceeding with reading.
10
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