Druck PV620G, PV620-IS Operating Manual

Sensing & Inspection Technologies

Druck PV 62x

pneumatic/hydraulic pressure stations

user manual - K0457

Issue 1

Quick reference data

A1.1

PV 621: Pneumatic pressure station

-950 mbar to 20 bar (-13.5 to 300 psi)

PV 622: Pneumatic pressure station

-950 mbar to 100 bar (-13.5 to 1500 psi)

PV 623: Hydraulic pressure station

0 to 1000 bar (0 to 15000 psi)

A1.2

PV 62x + DPI 620 + PM 620

Recommended pressure modules (PM 620) *

PV 621 models 25 mbar to 20 bar (0.36 to 300 psi) PV 622 models 25 mbar to 100 bar (0.36 to 1500 psi) PV 623 models 70 to 1000 bar (1000 to 15000 psi)

*Caution: To prevent damage to the PM 620 module, only use it

within the specified pressure limit on the label.

A1.3

PV 62x pressure relief valves (PR V )

(Recommended options)

Parts: IO620-PRV-P1 to P5 (Pneumati c)

PV 621 models 1 to 30 bar (14.5 to 435 psi) PV 622 models 1 to 100 bar (14.5 to 1500 psi)

Parts: IO620-PRV-H1 to H5 (Hydraulic)

PV 623 models 50 to 1000 bar (725 to 15000 psi)

Trademarks All product names are trademarks of their respective

companies.

Issue 1

Safety

General warnings

Pressure warnings

Before you use the instrument, make sure that you read and understand all the related data. This includes: the applicabl e local safety procedures, th is publication, and the instructions for the accessories/options/ equipment you are using it with.

WARNING

• It is dangerous to ignore the specified limits for the

instrument or to use the instrument when it is not in its normal condition. Use the applicable protection and obey all safety precautions.

• Do not use the instrument in locations with explosive

gas, vapour or dust. There is a risk of an explosion.

• It is dangerous to attach an external sour ce of pressure to a PV 62x series pressure st ation. Use only the internal mechanisms to set and control the pressure in the pressure station.

• Some liquid and gas mixtures are dangerous. This

includes mixtures that occur be cause of con t amination. Make sure that the equipment is safe to use with the necessary media.

Electrical warnings

• Pressurized gases and fluids are dangerous. Bef ore you

attach or disconnect pressure equipment, safely r elease all the pressure.

• To prevent a dangerous release of pressure, make sure

that all the related pipes, hoses and equipment have the correct pressure rating, are safe to use and are correctly attached.

If you use the DPI 620 calibrator with your pressure station, these warnings are also applicable:

• To prevent electrical shocks or damage to the DPI 620

calibrator, do not connect more than 30V between the terminals, or between the terminals and the ground (earth).

• This instrument uses a Lithium-Polymer (Li-Polymer)

battery pack. To prevent an ex plosion or fire, do not short circuit, do not disassemble, keep it safe from damage.

Continued

[EN] English - K0457 Safety iii

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1 1

• To prevent an explosion or fire, use only the GE

specified battery, power supply and battery charger .

• To make sure the display shows the correct data,

disconnect the test leads before you set the power to on or change to another measure or source function.

Cautions

To prevent damage to the instrument, do not let dirt get into the pressure mechanism. Before you attach equipment, make sure it is clean.

To prevent damage to t he instrument wh en you move it, hold the body of the pressure station or use the carry strap (or specified accessories).

PV 621/PV 622 models only. Before you turn the pressure/vacuum selector to + or -, release all the pressure. Sudden high pressure in the pump mechanism can cause damage.

PV 623 models only. Ice in the pressur e mechanism can cause damage. If the temperature is less than 4°C (39°F), drain all water from the instrument.

In its normal condition, the PV 623 model contains hydraulic fluid. To make sure it does not spill out, seal the system and put it on its side before you install a PRV.

To prevent damage to the PM 620 module, only use it within the specified pressure limit on the label.

Marks and symbols on the instrument

Before you start an operation or procedure in this publication, make sure that you have the necessary ski lls (if necessary, with qualifications from an approved training est abl is hment) . Follow good engineering practice at all times.

Complies with European Union directives

Read the manual Warning - refer to the

manual

PRV Pressure relief valve (Refer to Chapter 1; item )

Do not dispose of this product as household waste. Refer to Chapter 6 (Maintenance procedures).

More marks and symbols are specified in this manual

iv Safety K0457 - [EN] English

Issue 1

PV 622

PV 621

PV 623

Pressure calibrator

DPI 620 PM 620

Overview

Other module options

There are three pressure stations in the PV 62x series:

• two pneumatic pressure stations to give you accurate and

controlled pressure and vacuum conditions: PV 621: -950 mbar to 20 bar (-13.5 to 300 psi) version

PV 622: -950 mbar to 100 bar (-13.5 to 1500 psi) version

• one hydraulic pressure station to give you accurate and

controlled hydraulic pressure conditions: PV 623: 0 to 1000 bar (15000 psi)

To give the attached equipment overpressure protection, there are pressure relief valves (PRV) available for all the pressure stations; refer to Secti on 1.5 (Ac cessories).

The pressure stations are part of a set of hand-held modules that you can quickly put together to include a wide range of calibrator functions.

Pressure calibrator (this user manual): You can use the pressure stations on their own or you can attach the DPI 620 calibrator and a PM 620 module to make a fully integrated pressure calibrator instrument.

Advanced modular calibrator, DPI 620 (user manual K0449): Optional item. This is a bat tery-powered ins trument for

electrical measure and source operations and HART® communications. It also supplies the power and user interface functions for all the add-on modules. You can use the touch-screen to display up to six different parameters.

Pressure modules, PM 620 (this user manual): Optional item. These modules attach to a pressure station (PV 62x) to

give the DPI 620 calibrator the necessary pressure measurement functionality. They are fully interchangeable “plug and play” modules with no initial set-up or user calibration.

Software (user manual - K0449): The DPI 620 calibrator includes the following sof tware:

• documenting software • HART® communications

software

Other accessories and options: For part numbers (P/N), refer to Section 1.5 (Accessories).

[EN] English - K0457 Overview v

Issue 1

PV 622

PV 621

PV 623

Pressure calibrator

Summary of functions

This table gives a summary of the available funct ions with the PV 62x pressure stations.

PV 62x - pressure station functions

Function

Pneumatic pressure stations

PV 621: Pressure from vacuum (95%) to 20 bar (300 psi); * PV 622: Pressure from vacuum (95%) to 100 bar (1500 psi) Selector switch to change the pump operation from pressure

generator to vacuum generator Needle point pressure release valve to control the release of

pressure.

Hydraulic pressure station

* PV 623: Hydraulic pressure from 0 to 1000 bar (15000 psi)

Internal hydraulic reservoir: 100 cm Self sealing pressure module connection to prevent fluid leaks.

(6.1 in3)

Fast thermal stability for devices attached directly to the pressure test connection (≤ one minute)

All pressure stations

“Quick fit” pressure adaptors for the device under test ** Pressure connecti on for a PM 620 mod ule Volume adjuster to give accurate control of pressure conditions. Latch mechanism to attach the DPI 620 calibrator to make a fully

integrated pressure calibrator instrument ** Pressure relief valves (PRV) to give overpressure protection.

** Pressure station + DPI 620 calibrator + PM 620 module

Measure pressure/Leak test Documenting software

HART communications software to set up and calibrate devices that use the HART

* Refer to Chapter 7 (Specification) ** Optional item

(Highway Addressable Remote Transducer)

field communications protocol.

vi Summary of functions K0457 - [EN] English

Issue 1

1 1

About this manual

This user manual is set up for you to use on a computer or similar device that has the necessary software to read a Portable Document Format (PDF) file.

It is supplied as a PDF on a compact disc (CD) but you can copy or save the PDF onto a computer or similar device that has the necessary PDF software.

To navigate between related items of information, the use r manual includes cross references and links; for example:

• text cross references: ... Figure 1-1; Table 1-1; Chapter 1;

Section 1.5 (Accessories)

• some (but not all) symbols:

Note: If you move the PDF software cursor over an item that has a link, the cursor symbol normally changes.

When you click (or tap ) on a lin k, your PDF software shows the applicable page.

[EN] English - K0457 About this manual vii

Issue 1

viii About this manual K0457 - [EN] English

Issue 1

Quick reference data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

Other module options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

Summary of functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi

About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vii

Chapter 1: Instrument parts, accessories and options

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1

1.2 PV 621 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2.1 Pressure relief valve (PRV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.2 Test port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2.3 Pneumatic pressure release valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

1.2.4 Volume adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2.5 Selector (pressure/vacuum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.2.6 Pump (pressure/vacuum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3 PV 622 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.3.1 Pressure relief valve (PRV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4

1.3.2 Test port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.3.3 Pneumatic pressure release valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

1.3.4 Pneumatic refill valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.3.5 Volume adjuster wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5

1.3.6 Selector (pressure/vacuum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.3.7 Pump (pressure/vacuum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.4 PV 623 models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.4.1 Pressure relief valve (PRV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

1.4.2 Test port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.4.3 Hydraulic pressure release valve/ reservoir access. . . . . . . . . . . . . . . . . . . . . 1-9

1.4.4 Hydraulic refill valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.4.5 Volume adjuster wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

1.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

[EN] English - K0457 Table of Contents viii

Issue 1

Chapter 2: Pneumatic pressure operation (PV 621)

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

2.2 Release the pressur e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

2.3 Att ach/Remove the device under test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

2.3.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3.2 Procedure (to remove) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

2.4 Attach/Adjust a PRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.4.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.4.2 Procedure (to adjust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

2.5 Vacuum or pressure operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

2.5.1 Vacuum procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

2.5.2 Pressure procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Chapter 3: Pneumatic pressure operation (PV 622)

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.2 Release the pressur e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.3 Att ach/Remove the device under test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.3.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3.2 Procedure (to remove) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

3.4 Attach/Adjust a PRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.4.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.4.2 Procedure (to adjust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.5 Vacuum or pressure operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.5.1 Vacuum procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

3.5.2 Pressure procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Chapter 4: Hydraulic pressure operation (PV 623)

4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

4.2 Fill the reservoir. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

4.3 Release the pressur e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

4.4 Att ach/Remove the device under test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

4.4.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.4.2 Procedure (to remove) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

4.5 Attach/Adjust a PRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.5.1 Procedure (to attach) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.5.2 Procedure (to adjust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

4.6 Pressure operat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.6.1 Hydraulic pressure procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.6.2 Add more hydraulic fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.6.3 Drain hydraulic fluid from the device under test . . . . . . . . . . . . . . . . . . . . . . . 4-5

ix Table of Contents K0457 - [EN] English

Issue 1

4.7 Drain all the hydraulic fluid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.7.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.7.2 Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

Chapter 5: Pressure calibrator operation (DPI 620)

5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

5.2 Parts and assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

5.2.1 DPI 620 calibrator parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2.2 PM 620 module parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.2.3 Assembly instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3 Measure pressure/vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.3.1 Procedure overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.3.2 DPI 620 calibrator: Set the pressure function. . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.3.3 DPI 620 calibrator: Set the pressure unit s . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.3.4 DPI 620 calibrator: Set up a Leak Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5

5.3.5 DPI 620 calibrator: Set the PM 620 module to zero . . . . . . . . . . . . . . . . . . . .5-6

5.3.6 Example procedure: Gauge/indicator cal ibration . . . . . . . . . . . . . . . . . . . . . . 5-7

5.3.7 Example procedure: Transmitter calibration. . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.3.8 Example procedure: Switch test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Chapter 6: Maintenance procedures

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

6.2 Clean the unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.3 Drain the unit (PV 623 models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.4 Leak test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

6.4.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.4.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Chapter 7: Specification

7.1 PV 62x models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1.1 Pressure data (PV 62x models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

7.2 PM 620 modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

7.2.1 Pressure data (PM 620 modules). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

Customer service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back cover

[EN] English - K0457 Table of Contents x

Issue 1

xi Table of Contents K0457 - [EN] English

Chapter 1: Instrument parts,

Items 5, 9, 10: Not applicable

Figure 1-1: General views

1. Optional accessory: Pressure connection for a

pressure relief valve (PRV); see Section 1.2.1. A blanking plug is standard.

2. Test port: Pressure connection (G1/8 or 1/8NPT) to attach the device under test; see Section 1.2.2.

3. Pressure and electrical connections for a PM 620 module.

Seal the pressure connection with a blanking plug (P/N IO620-BLANK) or a PM 620 module that has the correct pressure rating.

4. Pneumatic pressure release valve to release pressure in the system; see Section 1.2.3.

6. Moulded compartment for the DPI 620 calibrator with electrical connections and a mechanism to hold it in position.

7. Push-button mechanism to release the DPI 620 calibrator.

8. Pneumatic volume adjuster; see Section 1.2.4.

11. Pressure/vacuum selector to set the pump operation:

pressure (+), vacuum (-); see Section 1.2.5.

12. Pump mechanism; see Sect ion 1.2.6.

13. Carrying strap with a carry handle and a shoulder

strap.

accessories and options

1.1 Introduction

1.2 PV 621 models

This chapter gives a description of the different parts of each instrument and the accessories/options available.

[EN] English - K0457 Instrument parts, accessories and options 1-1

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1.2.1 Pressure relief valve (PRV)

To give your attached devices overpressure prote ction (device under test, PM 620 module), we recommend you use one of our range of optional pneumatic PRVs; see Sect ion 1.5 (Accessories).

To attach or adjust a PRV, see Section 2.4.

1.2.2 Test port

To attach the device under test, the test port uses “Qui ck fit” pressure adaptors; see Section 1.5 (Accessories). These are easy to remove, change and install; see Section 2.3 (Attach/Remove the device under test).

1.2.3 Pneumatic pressure release valve

This is a needle point valve that lets you rel ease the pressure or vacuum, or seal the system. You can also use it to control a change in pressure conditi ons; f or example, to go to or t hrou gh another test pressure.

1.2.4 Volume adjuster

: Open : Close

This control increases or decreases the pressure/vacuum. Before you seal the system (Section 1.2.3), turn this control to the necessary position:

• for equal adjustment, turn it to the middl e of its range

• for maximum adjustment, turn it full y clockwise or

counterclockwise

When you have set the necessary pr essure or vacu um with t he pump (Section 1.2.6), use the volume adjuster to make the last adjustments.

1-2 Instrument parts, accessories and options K0457 - [EN] English

1.2.5 Selector (pressure/vacuum)

Caution: Before you turn the pressure/vacuum selector to + or -, release al l the pressur e. Sudden hi gh pressur e in the pump mechanism can cause damage.

This control sets the operation of the instrument (pressure or vacuum). To prevent a pressure leak, turn it fully clockwise or counterclockwise.

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: Pressure

1.2.6 Pump (pressure/vacuum)

When you have set the operation to pressure or vacuum (Section 1.2.5), seal the system (Section 1.2.3) and use the pump to set the necessary pressure or vacuum.

You can then make the last adjustments with the volume adjuster (Section 1.2.4).

: Vacuum

[EN] English - K0457 Instrument parts, accessories and options 1-3

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Items 8, 10: Not applicable

Figure 1-2: General views

1. Optional accessory: Pressure connection for a

pressure relief valve (PRV); see Section 1.3.1. A blanking plug is standard.

2. Test port: Pressure connection (G1/8 or 1/8NPT) to attach the device under test; see Section 1.3.2.

3. Pressure and electrical connections for a PM 620 module.

Seal the pressure connection with a blanking plug (P/N IO620-BLANK) or a PM 620 module that has the correct pressure rating.

4. Pneumatic pressure release valve to release pressure in the system; see Section 1.3.3.

5. Pneumatic refill valve. Close it to seal off all the pressure and refill the pressure mechanism; see Section 1.3.4.

6. Moulded compartment for the DPI 620 calibrator with electrical connections and a mechanism to hold it in position.

7. Push-button mechanism to release the DPI 620 calibrator.

9. Volume adjuster wheel with fold-in handle; see Section 1.3.5.

11. Pressure/vacuum selector to set the pump operation: pressure (+), vacuum (-); see Section 1.3.6.

12. Pump mechanism; see Sect ion 1.3.7.

13. Carrying strap with a carry handle and a shoulder

strap.

1.3 PV 622 models

1.3.1 Pressure relief valve (PRV)

To give your attached devices overpressure prote ction (device under test, PM 620 module), we recommend you use one of our range of optional pneumatic PRVs; see Sect ion 1.5 (Accessories).

To attach or adjust a PRV, see Section 3.4.

1-4 Instrument parts, accessories and options K0457 - [EN] English

1.3.2 Test port

To attach the device under test, the test port uses “Qui ck fit” pressure adaptors; see Section 1.5 (Accessories). These are easy to remove, change and install; see Section 3.3 (Attach/Remove the device under test).

1.3.3 Pneumatic pressure release valve

This is a needle point valve that lets you release the pressure or vacuum, or seal the system. You can also use it to control a change in pressure conditi ons; f or example, to go to or t hrou gh another test pressure.

Open Close

Note: To release all the pressure in the sy stem, you must open the refill valve (Section 1.3.4) one turn and then open the pressure release valve one turn.

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1.3.4 Pneumatic refill valve

When the refill valve is open, you have full control to increase or decrease the pressure/vacuum with the volume adjus ter (Section 1.3.5).

If you increase pressure and the volume adjuster gets to the limit of travel, cl ose the refill valve. This seals off all the pressure in the test port and the pressure module connection. You can then use the pump and volume adjuster to refill the pressure mechanism (Section 1.3.5).

Note: To release all the pressure in the sy stem, you must open the refill valve one turn and then open the pressure release valve (Section 1.3.3) one turn.

1.3.5 Volume adjuster wheel

The refill valve (Section 1.3.4) sets the operation of the Volume adjuster wheel: Full control or refill

Open (1 turn): Full control Close: Refill

[EN] English - K0457 Instrument parts, accessories and options 1-5

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