WP
4
PotentiaMeter
Getting Started
14
inverter have a continuous output of at least 140
Watts.
2. Place the WP4 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 WP4 to the inverter, and turn it on.
When the instrument is on, it draws 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
isn’t running.
5. Allow the instrument to warm up for 30 minutes
as you would in the lab. Check the calibration of
the instrument before proceeding with sampling.
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