PMS Instrument Company products

Model 600 Pressure Chamber Instrument is an old favorite we have built for over 50 years.   The instrument can be connected directly to a Nitrogen Cylinder with 207 Bar/3000 PSI pressure.

Model 600D Pressure Chamber Instrument is our digital format of the Model 600. The instrument can be connected directly to a Nitrogen Cylinder with 207 Bar/3000 PSI pressure. The instrument is fitted with a 40 Bar Digital Gauge that offers features such as backlighting and multiple pressure scales (Bar, MPa and PSI).

The Model 615 Pressure Chamber Instrument is a favorite for growers making routine water measurements and scheduling irrigation. It is the product of customer input. Our customers requested an instrument that was fully enclosed in a dust-proof case with an easily removable tank. They wanted an instrument that was easily hand carried or ready for mounting on an All-Terrain-Vehicle (ATV). The results of these requests is the Model 615 Pressure Chamber.

Model 615D Pressure Chamber Instrument is our digital format of the Model 615. It is fully enclosed in a sealed case and comes with an easily removable tank. The instrument is fitted with a 40 Bar Digital Gauge that offers features such as backlighting and multiple pressure scales (Bar, MPa and PSI).

Model 670 Pressure Chamber Instrument is unique in our instrument line due to the large chamber. The chamber is 4 inches in diameter and 7 inches deep. We only recommend this instrument if you are working with a large leaf since it takes a large amount of nitrogen to fill the chamber and makes working with smaller samples time consuming. If you are looking at making routine water measurements for scheduling deficit irrigation or explaining plant water relations and do not need this large chamber we recommend the Model 600. For extensive research projects you might consider a Model 1000 or Model 1505D due to the large range of operating pressure. The Model 670 can be connected directly to a Nitrogen Cylinder with 207 Bar/3000 PSI pressure.

A Model 600-EXP Super Pressure Chamber supplies all necessary control and measuring of nitrogen pressure. A valve and external port allow the Model 600-EXP to switch from the internal chamber to the external Super Chamber. The instrument chamber can be used for making measurements of normal sized samples and the Super Chamber for doing work with large samples.

1/8 Inch diameter adjustable hole (~3mm).

1/4 Inch diameter adjustable hole (~6mm). 3/4 Inch minimum sample length (~19mm).