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PMS Instrument Company

To order, call 541-704-2299 or Fax 541-704-2388 | Email

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More Resources:

  • Instruments
    • Filling the Model 610 internal Portable Tank
    • Filling the Model 615 or Model 1515D Portable Tank
    • Filling the Portable Tank
    • Preparing the Instrument for Use
    • Sealing a sample in the Compression Gland Cover
    • Setting the Rate Valve
    • What it should look like when it's all hooked up
  • Making the Measurements - Plant Moisture Stress
    • Interpreting Data
    • Making the Measurement of the Plant Sample
    • Measuring Leaf Water Potential in Wine Grapes
    • Measuring Stem Water Potential (SWP)
    • Measuring Stem Water Potential in Almond Trees
    • Measuring Stem Water Potential in Prune Trees
    • Measuring Stem Water Potential in Walnut Trees
    • PMS - Meaning and Importance
    • Stress levels, crop tables and information
    • Using a Pressure Chamber with Almond
  • Accessories to Nitrogen Gas Units
    • Installing the Almond Compression Gland Gasket and Insert
    • Installing the Grass Compression Gland
    • Pressure Regulators: Do I need one?
    • Sealing a sample using inserts, gaskets and tools
    • Using the Grass Compression Gland
    • Using the Grass Compression Gland with corn

Maintenance Topics:

  • Maintenance and Trouble Shooting Nitrogen Gas Units
    • Adjusting the "Brass" - Control Valve
    • Adjusting the "Stainless Steel" - Control Valve
    • Cleaning the O-Ring on the lid
    • Cleaning the Safety Valve
    • Digital Gauge Battery Replacement
    • Instrument Maintenance
    • Maintenance for Compression Gland Lid
    • Maintenance for the Portable Tank
    • Pump-Up Chamber is leaking
    • Testing the instruments safety features
  • Maintenance for the Pump-Up Chamber
    • Basic Maintenance of Pump-Up Chamber
    • Changing O-ring on Lid of Pump-Up Chamber
    • Changing Piston Cup on Pump-Up Chamber
    • Lubricating the piston of the Pump-Up Chamber

Instrument Manuals

  • Instrument Operating Manuals
    • Model 1515D Pressure Chamber Instructions (2013 and Older)
    • Model 610 Pressure Chamber Operating Instructions
    • Model 1505D-EXP Operating Instructions - (2013 and older)
    • Pump-Up Chamber Instructions
    • PMS Model 1515D Operating Instructions (2013 and newer)
    • PMS Model 670 Operating Instructions
    • Model 1505D-EXP Operating Instructions (2013 and Newer)
    • Model 1000 Operating Instructions
    • Model 615D Operating Instructions
    • Model 615 Operating Instructions
    • Model 600D Operating Instructions
    • Model 600 Operating Instructions - 2019
    • 1505D Pressure Chamber Instrument - Operating Instructions (2013 and Newer)

  • Accessories to Nitrogen Gas Units
    • Installing the Almond Compression Gland Gasket and Insert

      This tutorial is to change your existing Compression Gland and fit it with a Compression Gland Almond Insert and Gasket. The four parts shown are: Compression Gland Lid fitted with 1/4 inch Compression Gland Gasket/Insert (top) Almond Compression...

      Keep Reading...

    • Installing the Grass Compression Gland

      Watch this tutorial on YouTube You will first need to remove the current Compression Gland System from the chamber lid. This can be done by simply unscrewing the Compression Gland Screw and then removing the...

      Keep Reading...

    • Pressure Regulators: Do I need one?

      US Nitrogen Standards Since May of 2011 our instruments have been designed and engineered to connect directly to a 207 bar/ 3000 psi cylinder. If you bought your instrument prior to this date the instrument...

      Keep Reading...

    • Sealing a sample using inserts, gaskets and tools

      This sealing system is our original system and has since been updated with the Compression Gland Cover which is standard in all of our Pressure Chambers. This system uses a series of various...

      Keep Reading...

    • Using the Grass Compression Gland

      Watch this video on YouTube The Grass Compression Gland can be used to seal samples of bladed grass. If the grass is has a rounded blade, you can use the regular Compression Gland. The...

      Keep Reading...

    • Using the Grass Compression Gland with corn

      Watch this video on YouTube The Grass Compression Gland can be used to seal corn or “maiz” leaves also. When testing young corn leaves they might pass through without any effort or modification of the leaf....

      Keep Reading...

  • Home
  • About Us
    • About PMS Instrument
    • History of the Scholander Pressure Chamber
    • Biography of Henry Dixon
    • Biography of John Joly
    • Biography of Per Scholander
    • History of PMS Instrument - Joe Zaerr
    • The history of the double-ended pressure chamber
  • Products
    • Pump-Up Chamber
    • Model 600
    • Model 610
    • Model 615
    • Model 615D
    • Model 670
    • Model 1000
    • Model 1505D
    • Model 1515D
    • Model 1505D-EXP
    • Instrument Operating Manuals
    • Used Instruments
    • CE Declaration
  • Resources
    • Accessories to Nitrogen Gas Units
    • Instruments
    • Maintenance and Trouble Shooting Nitrogen Gas Units
    • Making the Measurements - Plant Moisture Stress
    • Plant Stress Levels
  • Maintenance
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