The Ceramic Cup Lysimeter is a soil pore water
collection device designed for permanent installation
beneath the ground surface. The lysimeter is a two line
system, designed to be used with a pressure vacuum pump.
The vacuum is pulled and the vadose water flows into the
ceramic cup. The pressure line is then used to push the
sample to the surface. The ceramic cup features pore size
of 0.446 micrometers. Two models available for shallow or
deep sampling.
The Shallow Lysimeter is designed for installation down
to 20 feet, while the Deep Sampling Lysimeter is designed
for installations down to 300 ft. Both Lysimeters use the
same pressure/vacuum principle; however, the deep sampling
lysimeter has a ball check valve that protects the porous
chamber from the higher pressures required to retrieve the
samples from greater depths. For very deep installations,
a compressor may be necessary to provide sufficient
pressure. A second ball check valve is installed in the
sample line. Lysimeters are 1.9" OD x 17.5" L.
For proper installation of the lysimeter, the following
components are required:
- Ceramic cup lysimeter: shallow or deep depending on
your application.
- Polyethylene tubing: 1/4" OD comes in 100 ft. spool.
- Silica Flour: use to pack around the ceramic cup to
establish equilibrium between the soil water and ceramic
cup. A 50 lb. pail of 200 mesh silica will make about 6
gallons of slurry, enough for one installation.
- Vacuum Pressure Pump: the hand pump is used for
installations down to 50 feet. Deeper installations may
require a more powerful pump or air compressor.
- 1 1/2" Casing: one end will thread directly into the
lysimeter. Order enough casing to reach to the ground
surface. Sold in 5 foot pieces that will thread
together.
- Lysimeter Head Assembly: designed for placement on
the casing at the ground surface, it provides a neat and
secure termination of the tubes from the lysimeter. A
permanent vacuum/pressure gage and taps for both lines
are mounted beneath the waterproof cap.
- 1/4 Tube Groover: reusable device that helps
position tubes correctly and ensures a tight seal.
1003-070 Shallow Ceramic
Cup Lysimeter
0.5 lb.
1003-071 Deep Sampling
Ceramic Cup Lysimeter 1 lb.
1003-072 Repl. Ceramic
Cup
0.3 lb.
1003-073 Lysimeter Head
Assembly
0.5 lb.
1003-074 50 lb. Pail of
Silica Flour
50 lbs.
1003-075 Vacuum Pressure
Hand Pump
5.5 lbs.
1003-076 5 ft. piece of 1
1/2" PVC Casing
5 lbs.
1003-077 Tube Groover
0.3 lb.
1003-078 1/4" OD
Polyethylene Tubing - 100 ft.
0.3 lb.
