Decagon WP4-T - 2 About the WP4; WP4 Models and Options; WP4 and Water Potential

WP
4
PotentiaMeter
About the WP4
5
2. About the WP4
WP4 is the fastest instrument for measuring water
potential, giving readings directly in MegaPascals
within five minutes. It measures water potential
from 0 to -60 MPa with an accuracy of ±0.1 MPa
from 0 to -10MPa and ±1% from -10 to -60 MPa. The
instrument is easy to use and maintain, with simple
checking of calibration.
WP4 Models and Options
The WP4 comes in two models to suit the needs of
different users. Here is a brief description of each:
WP4: Our standard model, adequate for most water
potential needs.
WP4-T: User-selectable internal temperature control
model, uses thermoelectric (Peltier) components to
maintain a constant internal temperature.
WP4 and Water Potential
Water potential is a measurement of the energy sta-
tus of the water in a system. It indicates how tightly