Model 615

Model 615 Pressure Chamber Instrument

The Model 615 Pressure Chamber Instrument has quickly become 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-Terain-Vehicle (ATV). The results of these requests is the Model 615 Pressure Chamber. We have recently (June 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 more robust packing therefore providing longer 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 routine water measurements in crop plants and light research in plants with little to moderate water stress. For extensive research projects you might consider a Model 1000 or Model 1505D due to the larger range of operating pressure.

The instrument has a bail-spring handle for carrying and comes complete with a shoulder strap to lighten the load in the field. It has 5 tie-down rings for mounting to ATV or other transportation. The instrument comes complete with light weight aluminum nitrogen cylinder (20 cubic foot) that is secured with 2 inch heavy duty Velcro straps and can be quickly replaced with a full cylinder. This cylinder can easily be transfilled from a large nitrogen cylinder as shown here in our Resources Page.

Model 615 Pressure chamber instrument on an atvModel 615 Pressure chamber instrument carried by handModel 615 Pressure chamber instrument open on an atv

For more information about how the Pressure Chamber works or other questions, please check our Resources Page.

Model 615 Specs

Maximum Operating Pressure 40 bar / 4 Mpa
Chamber Construction Hard Anodized Solid Stock Aluminum
Chamber Size 2.5 inch inside diameter x 5.0 inch inside depth
Read-out Bourdon Tube
Bar – PSI Scale
Size (L x W x H) 22 × 15 × 10 inches
56 × 38 × 26 centimeters
Weight 32 Lbs / 14 Kg
Gauge 4.5” Diameter Gauge
1/2 of 1% accuracy
40 bar (4 Mpa) range
Aluminum Tank 207 Bar/ 3000 PSI Maximum Pressure 20 Cubic Foot

Instrument comes complete with: 1/4 Inch Compression Gland Sealing System, 5 Extra 1/4 Compression Gland Gaskets, 6 foot Filling Hose, 1 – Solid Lab Stopper for instrument testing, O-Ring lubricant and Lithium Grease, 11/32 inch wrench and 3/32 inch Allen Key for Control Valve Adjustment and a color Operating Instructions Manual.

Recommended Accessories

Note: Necessary accessories will depend upon users application.

Helpful Links

Filling the Model 615 Portable Tank