• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

PMS Instrument Company

  • Home
  • About Us
    • Biography of Henry Dixon
    • Biography of John Joly
    • Biography of Per Scholander
    • History of PMS Instrument – Joe Zaerr
    • History of the Scholander Pressure Chamber
  • Products
    • Model 600
    • Model 600D
    • Model 600-EXP Super Chamber
    • Model 615
    • Model 615D
    • Model 670
    • Model 1000
    • Model 1505D
    • Model 1505D-EXP
    • Model 1515D
    • Pump-Up Chamber
  • Agriculture
    • Using a Pressure Chamber with wine grapes
    • Using a Pressure Chamber with Almond
    • Using a Pressure Chamber with Walnuts
    • Using a Pressure Chamber with Prunes
    • Stress levels, crop tables and information
  • Maintenance
  • Resources
    • References
  • How to Order
  • Contact Us
  • Show Search
Hide Search
You are here: Home / Picture Tutorials, Videos and maintenance information / Filling the Model 610 internal Portable Tank

Filling the Model 610 internal Portable Tank

Warning!Important Safety Information
« Click Here

Most pressure chamber users will use Nitrogen (N2) “Welding Nitrogen,” which is an inert gas and does not react with the plant sample. This has been the industry norm for some time. If you do not already have nitrogen, a “Nurse Tank” can normally be bought or rented from a welding supply store or gas supply store at minimal cost.

IMPORTANT – if you have a Portable Tank and not the internal tank of a Model 610 – click here to use different instructions.

Filling the Internal Tank of the Model 610 is easy, but care must be taken while trans-filling high pressure nitrogen. First, you need to have 3 items in order to make a successful fill of the Internal Tank. You need:

  1. Model 610 Pressure Chamber Instrument (with internal tank)
  2. Nurse Tank (Large filling tank)
  3. 6 foot connector hose (filling hose)

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

Nurse Tank (left), Model 610 (right), Filling Hose (front/center)

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

First, connect the Filling Hose to the Nurse Tank (should be hand tight)

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

Next, connect the filling hose to the Model 610 Instrument (pull back on female coupler to make connection) pull gently to ensure you have a safe connection

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

Your system should now look like this

Filling the tank for the Model 610 Pressure Chamber PMS InstrumentsFilling the tank for the Model 610 Pressure Chamber PMS InstrumentsFilling the tank for the Model 610 Pressure Chamber PMS InstrumentsFilling the tank for the Model 610 Pressure Chamber PMS Instruments

Ensure that the the following valves are shut before proceeding

Nurse Tank Valve, Bleeder Valve, Inlet Shut-off Valve, Internal Tank Valve

Now you are ready to start filling

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

Start by opening up the Nurse Tank Valve completely

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

This will allow pressure down to the Inlet Shut-Off Valve

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

Next, open the Inlet Shut-Off Valve – You will see the pressure rise on the “Tank Pressure” gauge

Filling the tank for the Model 610 Pressure Chamber PMS Instruments

IMPORTANT

BARELY OPEN THE INTERNAL TANK VALVE

JUST CRACK IT OPEN

Allow the nitrogen to slowly fill the Internal Tank

You will hear the nitrogen as it fills the tank. You should take about 4-5 minutes to fill the tank. As the pressure equalizes, continue to open up the valve a little bit more. Continue this process until the pressure has equalized completely. If you open the valve up to quickly and let too much gas into the tank – the valve will become HEATED and will have problems or fail. This is due to the gas compressing into the empty tank.

When the pressure has equalized, seal the Internal Tank first, then seal the Nurse Tank. Lastly seal the Inlet Shut-Off Valve. The bleeder valve will allow you to let the pressure escape from the hose. Now you can disconnect your hose from the Model 610 Pressure Chamber and store the Filling Hose and Nurse Tank You are now ready to take measurements.

Primary Sidebar

More Resources:

  • Instruments
    • Instrument Quick-Connect Couplers
    • Filling the Model 610 internal Portable Tank
    • Filling the Model 615, Model 615D or Model 1515D Internal Tank
    • Filling the Portable Tank
    • 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
    • Using a Pressure Chamber with Walnuts
    • Using a Pressure Chamber with wine grapes
    • Using a Pressure Chamber with Prunes
    • What kind of plants can be measured?
    • When to make measurements
  • Accessories to Nitrogen Gas Units
    • Installing the Almond Compression Gland Gasket and Insert
    • Installing the Grass Compression Gland
    • Using the Grass Compression Gland
    • Pressure Regulators: Do I need one?
    • Using the Grass Compression Gland with corn
    • Sealing a sample using inserts, gaskets and tools
    • Standard Sealing System

Copyright © 2023 PMS Istrument Company | LOGIN