Preiffer PKR 251 Manual de usuario

OPERATING INSTRUCTIONS

Translation of the Original

PKR 251

Pirani/Cold cathode gauge

Dear Customer,

Thank you for choosing a Pfeiffer Vacuum product. Your new gauge is designed to support

you in your individual application with maximum performance and without malfunctions. The

name Pfeiffer Vacuum stands for high-quality vacuum technology, a comprehensive and

complete range of top-quality products and first-class service. From this extensive, practical

experience we have gained a large volume of information that can contribute to efficient

deployment and to your personal safety.

In the knowledge that our product must avoid consuming work output, we trust that our

product can offer you a solution that supports you in the effective and trouble-free

implementation of your individual application.

Please read these operating instructions before putting your product into operation for the

first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-

vacuum.de.

Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on

our website.

Disclaimer of liability

These operating instructions describe all models and variants of your product. Note that your

product may not be equipped with all features described in this document. Pfeiffer Vacuum

constantly adapts its products to the latest state of the art without prior notice. Please take

into account that online operating instructions can deviate from the printed operating

instructions supplied with your product.

Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from

the use of the product that contradicts its proper use or is explicitly defined as foreseeable

misuse.

This document is the intellectual property of Pfeiffer Vacuum and all contents of this

document are protected by copyright. They may not be copied, altered, reproduced or

published without the prior written permission of Pfeiffer Vacuum.

We reserve the right to make changes to the technical data and information in this document.

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Table of contents

1 About this manual 7

1.1 Validity 7

1.1.1 Applicable documents 7

1.1.2 Variants 7

1.2 Target group 7

1.3 Conventions 8

1.3.1 Instructions in the text 8

1.3.2 Pictographs 8

1.3.3 Stickers on the product 8

1.3.4 Abbreviations 9

1.4 Trademark proof 9

2 Safety 10

2.1 General safety information 10

2.2 Safety instructions 10

2.3 Safety precautions 12

2.4 Limits of use of the product 13

2.5 Proper use 13

2.6 Foreseeable improper use 13

3 Product description 14

3.1 Function 14

3.2 Status display 14

3.3 Identifying the product 14

3.4 Scope of delivery 14

4 Transport and storage 16

4.1 Transporting the product 16

4.2 Storing the product 16

5 Installation 17

5.1 Establishing vacuum connection 17

5.2 Removing/installing magnetic unit 18

5.3 Establishing electric connection 20

6 Operation 22

6.1 Operating modes 22

6.2 Converting measuring signal and pressure 22

6.3 Determining effective pressure with calibration factors 23

6.4 Observing ignition delay 25

6.5 Protecting gauge from contamination 26

7 Removal 27

8 Maintenance 29

8.1 Calibrating gauge 29

8.2 Disassembling gauge 31

8.3 Cleaning components 32

8.4 Gauge assembling 33

9 Malfunctions 36

10 Shipping 37

11 Recycling and disposal 38

11.1 General disposal information 38

11.2 Dispose of gauges 38

Table of contents

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12 Service solutions by Pfeiffer Vacuum 39

13 Spare parts 41

14 Accessories 43

14.1 Accessory information 43

14.2 Ordering accessories 43

15 Technical data and dimensions 44

15.1 General 44

15.2 Technical data 44

15.3 Dimensions 46

ETL certification 47

Declaration of Conformity 48

Table of contents

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List of tables

Tbl. 1: Applicable documents 7

Tbl. 2: Variants 7

Tbl. 3: Abbreviations used 9

Tbl. 4: Limits of use of the product 13

Tbl. 5: Operating modes 22

Tbl. 6: Constants for converting measuring signal and pressure 23

Tbl. 7: Conversion table 23

Tbl. 8: Calibration factors for the pressure range < 10 hPa 25

Tbl. 9: Malfunctions 36

Tbl. 10: Conversion table: Pressure units 44

Tbl. 11: Conversion table: Units for gas throughput 44

Tbl. 12: Measured and pressure values 44

Tbl. 13: Electrical data 45

Tbl. 14: Internal volume and weight 45

Tbl. 15: Ambient conditions 45

Tbl. 16: Temperatures 46

Tbl. 17: Substances in contact with the media 46

List of tables

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List of figures

Fig. 1: Measuring configuration 14

Fig. 2: Light emitting diode 14

Fig. 3: Establishing vacuum connection 18

Fig. 4: Removing/installing magnetic unit 19

Fig. 5: Connection diagram 20

Fig. 6: Measurement cable and Hirschmann cable socket 21

Fig. 7: Relation between measuring signal and pressure 22

Fig. 8: Pressure range > 10 hPa, Pirani operation only 24

Fig. 9: Pressure range from 10 to 0.1 hPa 24

Fig. 10: Removing gauge 28

Fig. 11: Calibrating gauge (HV) 30

Fig. 12: Calibrating gauge (ATM) 30

Fig. 13: Individual parts 31

Fig. 14: Mounting tool for the ignition aid 34

Fig. 15: Spare parts 41

Fig. 16: Filter disk 43

Fig. 17: Dimensions 46

List of figures

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1 About this manual

IMPORTANT

Read carefully before use.

Keep the manual for future consultation.

1.1 Validity

This document describes the function of the products listed in the following and provides the most im-

portant information for safe use. The description is written in accordance with the valid directives. The

information in this document refers to the current development status of the products. The document

retains its validity assuming that the customer does not make any changes to the product.

1.1.1 Applicable documents

Designation Document

Brief instruction for "Pirani/cold cathode gauge"

PKR 251

BG 5119

"Total Pressure Measuring and Control Unit" operating instructions

TPG 361 | TPG 362

BG 5500

"Total Pressure Measuring and Control Unit" operating instructions

TPG 366

BG 5501

Declaration of conformity A component of these instruc-

tions

Tbl. 1: Applicable documents

You can find these documents in the Pfeiffer Vacuum Download Center.

1.1.2 Variants

This document applies to products with the following article numbers:

Article number Designation

PT R26 000 PKR 251, DN 25 ISO-KF

PT R26 001 PKR 251, DN 40 ISO-KF

PT R26 002 PKR 251, DN 40 CF-F

Tbl. 2: Variants

You can find the part number on the rating plate of the product.

Pfeiffer Vacuum reserves the right to make technical changes without prior notification.

Information that relates to only one of the products is indicated accordingly.

The figures in this document are not to scale.

Graphics without a caption reflect the product featuring a DN 25 ISO-KF vacuum connection, however,

they also apply for the other vacuum connections accordingly.

Dimensions are in mm unless stated otherwise.

1.2 Target group

These operating instructions are aimed at all persons performing the following activities on the product:

●Transportation

●Setup (Installation)

●Usage and operation

●Decommissioning

About this manual

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●Maintenance and cleaning

●Storage or disposal

The work described in this document is only permitted to be performed by persons with the appropriate

technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac-

uum.

1.3 Conventions

1.3.1 Instructions in the text

Usage instructions in the document follow a general structure that is complete in itself. The required ac-

tion is indicated by an individual step or multi-part action steps.

Individual action step

A horizontal, solid triangle indicates the only step in an action.

►This is an individual action step.

Sequence of multi-part action steps

The numerical list indicates an action with multiple necessary steps.

1. Step 1

2. Step 2

3. ...

1.3.2 Pictographs

The pictographs used in the document indicate useful information.

Note

Tip

Wear laboratory gloves

Perform a visual inspection

1.3.3 Stickers on the product

This section describes all the stickers on the product along with their meaning.

D-35614 Asslar

Mod.

P/N

S/N

Input

PKR 251

PT R26 xxx

xxxxxxxxx

15...30 V DC 2 W

Made in Liechtenstein 2019/04

3103457

Rating plate

The rating plate is located on the top of

the device.

10 cm

4”

Warning against magnetic fields

The sticker displays a warning that the

magnetic field of the gauge can interfere

with the functioning of pacemakers, and

specifies the minimum distance to the

gauge which must be maintained by per-

sons with pacemaker implants.

About this manual

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1.3.4 Abbreviations

Abbreviation Explanation

ATM Atmosphere

c Constant for converting measuring signal and pressure

C Calibration factor for calculating the pressure for gases other than air

d Constant for converting measuring signal and pressure

GND Ground

HV High vacuum

cpl. Complete unit

LED Light emitting diode

LPS Limited power source

MSL Mean sea level

p Pressure

PELV Protective extra low voltage

s seconds

WAF Width Across Flats

U Measuring signal [V] (output voltage)

VCR Trademark of the Swagelok Company

Tbl. 3: Abbreviations used

1.4 Trademark proof

●FullRange® is a trademark of Pfeiffer Vacuum GmbH.

●Hirschmann® is a trademark of Hirschmann Electronics GmbH.

●Scotch-Brite® is a registered trade name of 3M Company.

About this manual

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2 Safety

2.1 General safety information

The following 4 risk levels and 1 information level are taken into account in this document.

DANGER

Immediately pending danger

Indicates an immediately pending danger that will result in death or serious injury if not observed.

►Instructions to avoid the danger situation

WARNING

Potential pending danger

Indicates a pending danger that could result in death or serious injury if not observed.

►Instructions to avoid the danger situation

CAUTION

Potential pending danger

Indicates a pending danger that could result in minor injuries if not observed.

►Instructions to avoid the danger situation

NOTICE

Danger of damage to property

Is used to highlight actions that are not associated with personal injury.

►Instructions to avoid damage to property

Notes, tips or examples indicate important information about the product or about this docu-

ment.

2.2 Safety instructions

Safety instructions according to product life stages

All safety instructions in this document are based on the results of a risk assessment.

Pfeiffer Vacuum has taken into account all the relevant life stages of the product.

Risks during installation

DANGER

Danger to life due to dangerous contact voltage

Voltages above 30 V (AC) or 60 V (DC) are considered dangerous in accordance with EN 61010. If

you come into contact with dangerous contact voltage, this can result in injury through electric shocks

or even death.

►Only connect the product to devices which meet the following criteria:

●Requirements of the earthed protective extra-low voltage (PELV)

●Limited power source (LPS) Class 2

►Secure the line to the product.

–Pfeiffer Vacuum measuring and control equipment complies with this requirement.

Safety

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