METER WP4C User Manual

20
SERVICE
Instructions will appear (Figure17).
Figure17 Onscreen instructions
4. Empty the whole vial of KCl solution into a sample cup.
NOTE: Use the same type of sample cup (plastic or stainless steel) that will be use in subsequent
measurements.
5. Place the standard in the sample drawer and carefully slide the drawer closed to avoid
spilling solution and contaminating the chamber.
6. Turn the drawer knob to the READ position.
A notification that the measurement is starting will appear (Figure18).
Figure18 Measurement starting notification
When the reading is complete, a Results screen will appear (Figure19).
Figure19 Results screen
The reading should be within ±0.05 MPa of the correct reading of the KCl standard at
that temperature (Table 2). Results for other standards are in Appendix B.
Table 2 Water potential of 0.50 mol/kg KCl salt standard
Temperature
(°C)
0.50 mol/kg KCL
15 -2.14
20 -2.18
25 -2.22
30 -2.26
35 -2.29
40 -2.33
50 -2.41

METER WP4C Specifications

General

Brand	METER
Model	WP4C
Category	Measuring Instruments
Language	English