Soilmoisture Equipment 3000F01 Manuel utilisateur

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

OPERATING

INSTRUCTIONS

Plant Water Status Console February 2011

Model 3000F01

The Plant Water Status Console, Model 3000F01, is supplied without the compressed gas cylinder or the pres-

sure regulator, but does come with a 5-foot long, exible, high pressure (3,000 psi working pressure) stainless

steel connecting hose to connect to your pressure source. One end of the connecting hose is sealed to the

pressure inlet of the console. The other end can be tting with standard 1/4-inch pipe ttings to connect to your

regulated pressure source. We recommend you use brass pipe and tube ttings that have a 3,000 psi working

pressure. The regulated pressure that you supply to the console must not exceed the maximum pressure reading

of the pressure readout gauge of the console. For standard units this pressure is 600 psi.

Model 3005F01

The Plant Water Status Console, Model 3005F01, is supplied with a compressed gas cylinder and connected

pressure regulator for eld operation. The pressure regulator has been set at the factory for the maximum operat-

ing pressure of the unit which, for standard units, is 600 psi.

Fig. 01 - Model 3005F01 Plant Water Status Console - Table top

Fig. 02- Model 3005F01 Plant Water Status Console

(EXTENSION LEGS ATTACHED)

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

Soilmoisture Equipment Corp. (SEC) warrants all products manufactured by SEC to be free from defects

in materials and workmanship under normal use and service for twelve (12) months from the date of

invoice provided the section below has been met.

Soilmoisture Equipment Corp. (SEC) is not liable for any damages, actual or inferred, caused by misuse

or improper handling of its products. SEC products are designed to be used solely as described in these

product operating instructions by a prudent individual under normal operating conditions in applications

intended for use by this product.

WARRANTY & LIABILITY

TABLE OF CONTENTS

UNPACKING

The Plant Water Status Console was thoroughly tested before shipment. When packed, it was in per-

fect working order. Unpack with care being sure to remove all packing material. Follow the instructions

carefully in order to ensure long, trouble-free service.

Any damage found upon receipt should be reported immediately to the transport carrier for

claim. It is important to save the shipping container and all evidence to support your claim.

Be sure to read all operating instructions thoroughly before operating the unit.

The Plant Water Status Console comes fully assembled. See page 4 for instructions on how to as-

semble the leg extensions for laboratory use.

As with any pressure system, use reasonable caution. Be sure all valves are off before trans-

porting. Do not lean directly over the specimen holder. Leave it to a qualied technician to do

the repairs. Have the unit serviced at least once a year. DOT standards on aluminum pressure

vessels require hydrostatic testing every 5 years.

CAUTIONS & WARNINGS

Unpacking .............................................................................................................................................2

Cautions & Warnings..............................................................................................................................2

Warranty & Liability.................................................................................................................................2

General specications............................................................................................................................3

Theory of operation................................................................................................................................3

Acquaint Yourself with the parts.............................................................................................................4

Leg Extension Assembly...........................................................................................................5

Speciman holder and Pressure Vessel.....................................................................................5

Gauge.......................................................................................................................................6

Prep Board................................................................................................................................7

Valve Controls........................................................................................................................7-8

How to use and/or operate unit.........................................................................................................9-11

General care and maintenance............................................................................................................12

How to replace the compressed gas cylinder..........................................................................12

How to rell the compressed gas cylinder...............................................................................13

Helpful hints during normal use............................................................................................................14

Troubleshooting....................................................................................................................................14

Minor Adjustments................................................................................................................................14

Use and application of product options................................................................................................15

Specimen Holders and Grommets..................................................................................................15-18

Notes....................................................................................................................................................19

Replacement parts and accessories list.........................................................................................20-21

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

22 cubic foot aluminum DOT-3AL aluminum cylinder with CGA-580 tting rated for 2216 psi – requires •

hydrostatic testing every 5 years.

Single stage, step-down regulator set to 600 psi at the factory (can be reset by user if necessary).•

Standard pressure vessel 7˝, 0.5 liter volume, 2.4 kg, 40 or 80 bars. Cam lock. Specimen holder •

with safety valve. Internal diameter 2.73˝ with vertical useable height 5.837˝.

12˝ and 20˝ vessels also available. 12˝, 3.8 kg, 1 liter volume, 10.837” height. 20”, 6.3 kg, 1.8 liter, •

19.837˝ height.

All vessels 2.73˝ diameter and rated for 80 bars with cam lock and safety valve features. Made of •

stainless steel for a lifetime of use.

6˝ scientic test gauge with beryllium copper movement and stainless steel case, ¼ of 1% full scale •

accuracy and the highest quality you can buy for many years of service.

600 psi gauge, 40 bars. Subdivisions 2 psi, 0.2Bars, 20 kPa.•

Resolution ½ a division. Dual scale psi + kPa, Parallax mirror and adjustable needle to re-zero if •

necessary.

1500 psi gauge, 80 bars. Subdivisions 10 psi, 0.5 Bars, 50 kPa.•

Resolution ½ a division. Dual scale psi + kPa, Parallax mirror and adjustable needle to re-zero if •

necessary.

THEORY OF OPERATION

GENERAL SPECIFICATIONS

The roots of a plant are using reverse osmotic forces to overcome the matrix potential of the soil. The

stomates on the leaves of a plant are transpiring at different rates throughout the day. The resulting

tension in the xylem column can be measured using a plant water status console device.

The petiole of a leaf or stem is placed in a rubber grommet so the leaves are inside the pressure chamber

and the stem is outside at atmospheric pressure. By pressurizing the chamber and watching the point

where the sap oozes out of the stem at atmospheric pressure the 2 forces are in balance – the reading

on the gauge and the tension in the xylem column. This value can vary from the bottom to the top of the

plant and at different times of the day due to temperature, humidity, sunlight, and wind. By stressing

the plant, better crops can be produced and water use better managed.

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

AQUAINT YOURSELF WITH THE PARTS

SIDE VIEW Model 3005

PRESSURE GAUGE

COMPRESSED

GAS CYLINDER

(Model 3005 only)

PREPARATION

BOARD

3-WAY

CONTROL VALVE

METERING VALVE

TEST GAUGE

PRESSURE VESSEL

SPECIMEN

HOLDER

TANK

MOUNT BRACKET

(Model 3005 only)

Model 3005 PLANT WATER STATUS CONSOLE

SEALING VALVE

PRESSURE REGULATOR

SUPPORT BAR LEG EXTENSIONS (2 FRONT / 2 BACK)

ROUND HEAD BOLTS

(FOR LEG EXTENSION

ASSEMBLY - 8 PER UNIT)

Fig. 03 - Plant Water Status Console primary parts

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

Assembly may require assistance depending on the size of

pressure vessel and total weight of unit.

(Fig.04)

Unscrew round head bolts on each leg. (Total of 8 bolts 1.

included solely for the leg extensions)

Gently lay unit on front or back side. The unit may be 2.

resting on the pressure vessel. Although the pressure

vessel is bolted securely on the chassis, be careful not

to add any additional pressure.

Match legs to bolt holes. Re-insert bolts through bolt3.

holes and tighten.

Gently turn unit over and repeat steps 2 & 3 with the nal 4.

two legs.

The specimen holder is held securely in place with four internal

cams at the top of the vessel. The vessel’s high pressure gas inlet

is in the center of the vessel base. Remove the specimen holder by

turning the closing cap counterclockwise 45° and pulling the holder

upward (Fig. 05). To insert the specimen holder for a run, turn the

specimen holder 45° clockwise to lock it in place.

When the specimen holder is removed the rst time, it may require

considerable force. The “O” ring used to make the pressure seal

tends to “seize” to the metal surface if it is allowed to remain in

the compressed position for a considerable time. To minimize this

problem, apply a thin coat of light grease, such as stopcock grease

or Vaseline, to the “O” ring. Then, after the specimen holder is re-

moved for the rst time, it will enter and close.

AQUAINT YOURSELF WITH THE PARTS (cont.)

LEG EXTENSION ASSEMBLY

SPECIMEN HOLDER AND PRESSURE VESSEL

ROUND HEAD BOLTS

(2 EACH LEG)

FRONT LEG EXTENSION

BACK LEG EXTENSION

Fig. 04 - Leg extension assembly

Fig. 05- Specimen Holder

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

The fail safe valve (Fig. 6), in line with the pressure vessel cams, prevents build up of pressure in the

pressure vessel unless the specimen holder is completely locked in place.

The sealing knob (Fig. 6) on the specimen holder actuates the collet-type closure that pressure seals

the specimen and sealing sleeves during a run. Turning the sealing knob clockwise seals the specimen.

Turning counterclockwise releases the seal. (Sealing sleeves and grommets are discussed on pages

15-18.)

GAUGE

The 6 inch dial face, 1/4 +/- of 1% accuracy test gauge, graduated in both psi (pounds per square inch)

and in bars, indicates the pressure within the pressure vessel at all times. The swivel support base pro-

vides a detent to hold the gauge in two reading positions and one position for transport (Fig.07). A zero

pointer position adjusting screw is provided for zeroing the pointer in the event it is jarred out of place.

AQUAINT YOURSELF WITH THE PARTS (cont.)

Fig. 06- Specimen Holder

FAIL SAFE VALVE

SEALING KNOB

SEALING SLEEVE

GROMMET

Fig. 07- Test gauge with swivel base

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

The metering valve controls the rate at which pressure is built up in the pressure vessel. The valve is

usually adjusted so that the rate of pressure increase is in the range of 5-10 psi per second. Turning the

valve counterclockwise increases the rate of ow. During routine tests, this valve can be left at one xed

position to give uniform pressure building up on all samples. When the metering valve is closed (by

turning clockwise) care should be taken not to exert excessive closing force since this tends to damage

the valve seat and the long tapered valve which provides the sensitive gas ow control (Fig. 09).

The control valve directs the ow of gas into or out of the pressure vessel or seals the gas within the

pressure vessel (Fig. 10). When the control valve is in the “OFF” position, high pressure gas within the

pressure vessel is sealed in and no gas can enter or leave. When the control valve is in the “PRESSUR-

IZE” position, high pressure supply air from the pressure regulator ows through the metering valve,

through the control valve and into the pressure vessel. When the control valve is in the “EXHAUST”

position, the high pressure gas within the pressure vessel exhausts immediately to the atmosphere.

VALVE CONTROLS

PREPBOARD

The high density polyethylene preparation board provides a convenient cutting block for the prepara-

tion of leaf samples. The notch at the end holds the specimen holder during the loading operation to

minimize possibilities of damage (Fig. 08).

PRESSURIZE OFF EXHAUST

AQUAINT YOURSELF WITH THE PARTS (cont.)

Fig. 08- Specimen holder on prep board

Fig. 09- Metering valve settings

Fig. 10- Control valve settings

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

Underneath the panel a safety relief valve is incorporated in the system to prevent damage from any

excess buildup of pressure. The relief valve is set at the factory so that pressure will be released when

it exceeds the maximum operating range of the console (Fig. 11).

The pressure regulator is connected to the compressed gas cylinder. It can readily be removed for re-

placement or relling of the cylinder. The output pressure on the regulator has been set at the factory

at 600 psi for standard consoles.

The small pressure gauge, screwed into one of the ports of the regulator indicates the pressure within

the compressed gas cylinder and is used as a guide to indicate when the cylinder needs relling

(Fig. 12).

The rellable 2,216 psi, 22 cubic feet capacity, compressed gas cylinder is held securely by the tank

mounting bracket beneath the chassis. When empty, it can be lled in place without removing it from the

chassis. The sealing valve at the end of the tank should be kept closed (turn clockwise) except when

the console is in use.

AQUAINT YOURSELF WITH THE PARTS (cont.)

Fig. 11 - Safety relief valve

Fig. 12 - Parts under chassis

SAFETY RELIEF VALVE

(BOTTOM OF UNIT VIEW)

PRESSURE GAUGE

SEALING VALVE

PRESSURE REGULATOR

TANK MOUNTING

BRACKET

TANK

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

Step 1

Close the metering valve, turning clockwise (Fig. 09).

Step 2

The rellable 2,216 psi, 22 cubic feet capacity, compressed gas cylinder is held securely by the bottle

bracket beneath the chassis. When empty, it can be lled in place without removing it from the chassis.

The sealing valve at the end of the tank should be kept closed (turn clockwise) except when the console

is in use (Fig. 12).

Step 3

Open compressed gas cylinder sealing valve, by turning counterclockwise (Fig. 12).

Step 4

Remove specimen holder from pressure vessel, as described earlier, and place in notch of sample

preparation board (Fig. 08).

Step 5

Select sample leaf to run.

On initial run to check the unit and to acquaint yourself with its operation, you can substitute a round

rod for the leaf sample in order to seal the specimen holder. A nail, rivet, dowel pin, or round 1/8-inch to

1/4 inch in diameter may be used. If the diameter to be sealed is less than 1/8-inch, select the sup-port

washer with the 9/64-inch hole. If the diameter to be sealed is greater than 1/8 inch select the support

washer with the 1/4 inch hole. Next, select one of the rubber sealing sleeves that best ts the stem

diameter.

Step 6

Arrange the sealing sleeve on the stem, as shown,

and insert into the specimen holder, as shown. Turn

the sealing knob clockwise until the compressing

grommet squeezes the sealing sleeve sufciently

around the stem to hold it securely (Fig. 13).

Step 7

Holding the specimen holder by the closing cap, in-

sert the leaf sample into the pressure vessel and

then push the specimen holder down into place in

the pressure vessel. Pushing down with both thumbs

(one thumb on either side of the specimen holder, is

a good way to secure the specimen holder in place.)

Then, turn the specimen holder 45° clockwise, us-

ing the closing caps to lock it under the cams of the

pressure vessel.

Step 8

Tighten the sealing knob further, if necessary, to

be sure that the sealing sleeve is sealing properly

around the stem.

HOW TO USE AND/OR OPERATE THE UNIT

Fig. 13 - Stem insertion into the specimen holder

SOILMOISTURE EQUIPMENT CORP.

P.O. Box 30025, Santa Barbara, CA 93105 U.S.A.

Telephone 805-964-3525 - Fax No. 805-683-2189

sales@soilmoisture.com - www.soilmoisture.com

SOILMOISTURE

Step 9

Turn the control valve to the PRESSURIZE position (Fig. 10).

Step 10

Slowly open the metering valve, by turning it counterclockwise, and observe the pressure buildup on

the readout gauge (Fig. 09). Adjust valve until rate of increase is in the range of 5-10 psi per second or

at the rate you desire for the test.

Step 11

To stop the build up of pressure within the vessel at any time, simply turn the control valve (Fig.10) to

the “OFF” position. To resume build up of pressure, turn the control valve slowly to the “PRESSURIZE”

position.

Note: if the control valve is turned quickly to the “PRESSURIZE” position after an interruption in pres-

sure build up, as above, there will be a quick jump in pressure of a few pounds within the pressure

vessel. This is caused by the high pressure gas that builds up in the connecting tube between the

metering valve and the control valve while the control valve is in the “OFF” position. When the control

valve is opened quickly, this small volume of high pressure gas (supply pressure -600 psi) discharges

immediately into the pressure vessel. Thereafter, the metering valve limits the ow.

Step 12

The build up of pressure within the vessel can also be stopped or reduced at any time by turning the

metering valve in a clock-wise direction. Once you know the approximate value for the equilibrium

pressure for the plant specimen being tested, it is usually desirable to reduce the rate of pressure build

up as you approach the equilibrium pressure so that the equilibrium value can more accurately be

determined.

Step 13

As pressure builds up in the pressure vessel, carefully observe the cut end of the petiole of the sample.

(Fig. 14)

If you hear air escaping around the sealing area of the sam-

ple, or if the stem seems to be “extruding” or moving up out of

the sealing sleeve, simply tighten the sealing knob further to

exert higher sealing pressure to stop the leak or movement.

CAUTION: Never put your eye directly over the center

of the pressure vessel during a run. Always observe the

sample stem from the side. Remember you are dealing

with high pressures and it is possible that a sample -

such as an individual needle from a pine tree - can be

ejected from the holder. It is recommended that the end

of the cut petiole be observed through a low-power mag-

nifying glass. The glass will give a better view and also

offers protection for the eyes.

Step 14.

The equilibrium pressure for the individual sample is reached

when sap starts to ow from the exposed cut end of the sam-

ple.

Fig. 14 - Observing the cut petiole of the sample

HOW TO USE AND/OR OPERATE THE UNIT (cont.)

Ce manuel convient aux modèles suivants

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