Model 1000 - Pressure Chamber Instruments
The Model 1000 Pressure Chamber Instrument is an old favorite we have built for over 40 years. We have recently (May 2011) updated this instrument with some changes that most users will appreciate. We have upgraded the Control Valve and internal piping to now allow direct connection to Nitrogen Cylinders with 207 Bar/3000 PSI pressure. This stainless steel valve is more durable and has a better packing therefore giving more life.
Instrument comes fitted with our most popular sealing gasket size – 1/4 inch Compression Gland Gasket and Insert. This gasket will seal a sample that is 1/4 inch in diameter down to a completely closed position. If you need other sealing options such as bladed grass or other semi-round sizes check our other options.
This is an excellent choice for research due to the large range of operating pressure. It is good for work on high stress level plants, pressure volume curves but can also be used for routine water measurements for crop plants.
The instrument requires a nitrogen source. You can use it in a lab or green house with a large cylinder or buy our light weight Portable Tank to allow for field work.
There are three different sealing lids available. When you order your instrument you must choose one with the instrument and can order a another one as an accessory. The small system (left) accepts samples up to .140 inches or just slightly larger than 1/8 inch in diameter. The stem must be at least 3/4 inch in length to pass through the lid. This system was designed for use with orchard tree leaves like prunes. The samples are sealed into a compression gland mounted in the chamber lid, which uses various sizes of O-rings. The large system (middle) accepts samples up to 1/4 inch. The stem must be at least 1 1/8 inch in length to pass through the lid. This system was designed to fit larger diameter stems. The samples are sealed into a compression gland mounted in the chamber lid. This system uses Compression Gland Gaskets to seal the sample. The last lid on the right is fitted to use our “Bladed Grass Compression Gland“ gasket and insert.