Pfeiffer Vacuum RPT 200 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
RPT 200 ∣RPT 201
Digital Piezo/Pirani 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.
Copyright
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.
2/46

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 8
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 Proper use 13
2.5 Foreseeable improper use 13
2.6 Responsibilities and warranty 13
2.7 Owner requirements 14
2.8 Personnel qualification 14
2.8.1 Ensuring personnel qualification 14
2.8.2 Personnel qualification for maintenance and repair 14
2.8.3 Advanced training with Pfeiffer Vacuum 15
2.9 Operator requirements 15
3 Product description 16
3.1 Function 16
3.2 Identifying the product 16
3.3 Scope of delivery 16
4 Transport and storage 17
4.1 Transporting the product 17
4.2 Storing the product 17
5 Installation 18
5.1 Establish vacuum connection 18
5.2 Create "RS-485" connection 19
6 Interfaces 21
6.1 Interface RS-485 21
6.2 Pfeiffer Vacuum protocol for RS-485 interface 22
6.2.1 Telegram frame 22
6.2.2 Telegram description 22
6.2.3 Telegram example 1 23
6.2.4 Telegram example 2 23
6.2.5 Data types 23
7 Parameter set 25
7.1 General 25
7.2 Overview of parameters of RPT gauge 25
7.3 Control commands 25
7.4 Status requests 26
7.5 Pressure values and calibration factors 26
8 Operation 27
8.1 Select switching ranges 27
Table of contents
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8.2 Determine effective pressure with calibration factors 28
8.3 Read and set relay and switch-points 30
9 Disassembly 31
10 Maintenance 32
10.1 Cleaning of components 32
10.2 Calibrating the gauge 33
10.3 Replacing the sensor module 34
11 Malfunctions 35
12 Shipping 36
13 Recycling and disposal 37
13.1 General disposal information 37
13.2 Dispose of gauges 37
14 Service solutions by Pfeiffer Vacuum 38
15 Spare parts 40
16 Accessories 41
16.1 Accessory information 41
16.2 Order accessories 41
17 Technical data and dimensions 42
17.1 General 42
17.2 Technical data 42
17.3 Dimensions 44
Declaration of conformity 45
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: Features of the RS-485 interface 21
Tbl. 5: Explanation and meaning of the parameters 25
Tbl. 6: Overview of parameters of RPT gauge 25
Tbl. 7: Parameter set | Control commands 25
Tbl. 8: Parameter set | Status requests 26
Tbl. 9: Parameter set | Pressure values and calibration factors 26
Tbl. 10: Operating mode display via "device status" LED 27
Tbl. 11: Calibration factors for the pressure range < 1 hPa 29
Tbl. 12: Malfunctions 35
Tbl. 13: Spare parts 40
Tbl. 14: Accessories 41
Tbl. 15: Conversion table: Pressure units 42
Tbl. 16: Conversion table: Units for gas throughput 42
Tbl. 17: Measured and pressure values 42
Tbl. 18: Electrical data 43
Tbl. 19: RS-485 interface 43
Tbl. 20: Connection flanges and weight 43
Tbl. 21: Ambient conditions 43
Tbl. 22: Temperatures 43
Tbl. 23: Substances in contact with the media 44
List of tables
5/46

List of figures
Fig. 1: Structure of the RPT gauge 16
Fig. 2: Establish vacuum connection 19
Fig. 3: Terminal assignment of RS-485 connecting socket 20
Fig. 4: Cross-link via connection RS-485 using connection cables and accessories 21
Fig. 5: Cross-link via RS-485 connection with DPG 202 22
Fig. 6: Examples of reading current pressure values via [P:740] 27
Fig. 7: Switching range with continuous transition 28
Fig. 8: Direct switching between Piezo and Pirani pressure measurement 28
Fig. 9: Displayed pressure 29
Fig. 10: Replace sensor module 34
Fig. 11: Sensor module 40
Fig. 12: RPT 20x with DN 16 ISO-KF 44
Fig. 13: RPT 20x with DN 16 CF-F 44
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
"Display and control unit" operating instructions
DPG 202
PG 0030
Declaration of conformity (part of these instructions)
Tbl. 1: Applicable documents
You can find this document in the Pfeiffer Vacuum Download Center.
1.1.2 Variants
This document applies to products with the following part numbers:
Article number Designation Filament
PT R37 130 RPT 200 (DN 16 ISO-KF) Tungsten
PT R37 310 RPT 200 (DN 16 CF-F)
PT R46 130 RPT 201 (DN 16 ISO-KF) Platinum/Rhodium
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.
The figures show the product with a DN 16 ISO-KF vacuum connection, however, they also apply to the
other vacuum connections where applicable.
Dimensions are provided in mm, unless specified 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
●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.
About this manual
7/46

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 meanings.
D-35614 Asslar
Mod.
P/N
S/N
Input
RPT 20x
PT Rxx xxx
12345678
24 V DC 2.5 W
Made in Germany 2021/03
Range 1.0x10 - 1200 hPa
-4
Rating plate
The rating plate is located on the back
of the device.
1.3.4 Abbreviations
Abbreviation Explanation
ATM Atmosphere
AR Analog relay
DCU Display and control unit by Pfeiffer Vacuum for DigiLine gauge
FS Measuring range max. (full scale)
HU Height unit of a 19" rack
About this manual
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Abbreviation Explanation
HV High vacuum
MSL Mean sea level
OR Overrange
[P:xxx] Electronic drive unit control parameters. Printed in bold as a three-digit number in
square brackets. Frequently displayed in conjunction with a short description.
Example: [P:312] software version
p Pressure
RS-485 Standard for a physical interface for asynchronous serial data transmission (recom-
mended standard)
TPS Voltage supply (turbo power supply)
UR Underrange
Tbl. 3: Abbreviations used
1.4 Trademark proof
●Binder® is a trademark of Franz Binder GmbH + Co. Elektrische Bauelemente KG.
●Torx® is a trademark of Acument Global Technologies.
About this manual
9/46

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’s 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
Risk to life due to electric shock
An improperly earthed product is potentially fatal in the event of a fault.
►Connect the product galvanically with the earthed vacuum chamber.
►Ensure that the connection complies with the requirements of a protective bonding according to
EN 61010. (CF and VCR connections comply with this requirement.)
►Use electrically conductive centering rings and circlips for KF connections.
Safety
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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.
DANGER
Danger to life from electric shock
When establishing the voltages that exceed the specified safety extra-low voltage (according to IEC
60449 and VDE 0100), the insulating measures will be destroyed. There is a danger to life from elec-
tric shock at the communication interfaces.
►Connect only suitable devices to the bus system.
Risks during operation
DANGER
Electric shocks due to moisture penetrating into the device
Moisture that has penetrated into the device results in personal injury through electric shocks.
►Only operate the device in a dry environment.
►Operate the device away from fluids and humidity sources.
►Do not switch on the device if fluid has penetrated into it, instead contact Pfeiffer Vacuum Serv-
ice.
►Always disconnect the current supply before cleaning the device.
WARNING
Risk of injury resulting from overpressure in the vacuum system
Opening tensioning pieces with an overpressure > 1000 hPa in the vacuum system can lead to inju-
ries as a result of flying parts, and escaping process medium could prove harmful to health.
Elastomer seals in KF connections (e.g. O-rings) are not resistant to pressures > 2500 hPa. This
could prove harmful to health due to escaping process medium.
►Do not open any tensioning pieces when overpressure is prevalent in the vacuum system.
►Use suitable tensioning pieces for overpressure.
►Use tensioning pieces which can only be opened and closed using a tool (e.g. tightening strap-
circlip).
►Use sealing rings with an outer centering ring.
Risks during maintenance
DANGER
Electric shocks due to moisture penetrating into the device
Moisture that has penetrated into the device results in personal injury through electric shocks.
►Only operate the device in a dry environment.
►Operate the device away from fluids and humidity sources.
►Do not switch on the device if fluid has penetrated into it, instead contact Pfeiffer Vacuum Serv-
ice.
►Always disconnect the current supply before cleaning the device.
Safety
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WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
WARNING
Health hazards due to cleaning agent
The cleaning agent being used causes health hazards which could include, for example, poisoning,
allergies, skin irritations, chemical burns or damage to the airways.
►When handling cleaning agents, observe the applicable regulations.
►Adhere to safety measures regarding handling and disposal of cleaning agents.
►Be aware of potential reactions with product materials.
Risks when shipping
WARNING
Risk of poisoning from contaminated products
Where products that contain harmful substances are shipped for maintenance or repair purposes, the
health and safety of service personnel is at risk.
►Comply with the instructions for safe distribution.
Risks during disposal
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
2.3 Safety precautions
The product is designed according to the latest technology and recognized safety engineering rules.
Nevertheless, improper use can result in danger to operator all third party life and limb, and product
damage and additional property damage.
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Safety
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Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
General safety precautions when handling the product
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Pass on safety instructions to all other users.
►Do not expose body parts to the vacuum.
►Always ensure a secure connection to the earthed conductor (PE).
►Never disconnect plug connections during operation.
►Observe the above shutdown procedures.
►Keep lines and cables away from hot surfaces (> 70 °C).
►Do not carry out your own conversions or modifications on the device.
►Observe the unit protection degree prior to installation or operation in other environments.
►Provide suitable touch protection, if the surface temperature exceeds 70 °C.
►Inform yourself about any contamination before starting work.
2.4 Proper use
The RPT 200 gauge is used for vacuum measurement of air, gases and gauges outside their explosion
limits, within the range of 1 × 10-4 to 1200 hPa.
The RPT 201 gauge is used for vacuum measurement of air, gases and gauges outside their explosion
limits, within the range of 5 × 10-4 to 1200 hPa and is also suitable for operation with corrosive gases,
due to its filament material.
Use the product according to its intended purpose
►Operate the gauge with a Pfeiffer Vacuum total pressure measuring and control unit or with an
evaluation unit provided by the customer.
►Install, operate and maintain the gauge exclusively as prescribed in these operating instructions.
►Observe the application limits prescribed in the technical data.
►Observe the technical data.
2.5 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as misuse, in particular:
●Use outside the mechanical and electrical application limits
●Use with corrosive or explosive media, if this is not explicitly permitted
●Use for the measurement of highly flammable or combustible gases mixed with an oxidizing agent
(e.g. atmospheric oxygen) within the explosion limits
●Use outdoors
●Use after technical changes (on the inside or the outside of the product)
●Use with replacement or accessory parts that are unsuitable or are not approved
2.6 Responsibilities and warranty
Pfeiffer Vacuum shall assume no responsibilities and warranty if the operating company or a third party:
●disregards this document
●does not use the product for its intended purpose
●carries out any modifications to the product (conversions, changes, etc.) that are not listed in the
corresponding product documentation
●operates the product with accessories that are not listed in the corresponding product documenta-
tion
The operator is responsible for the process media used.
Safety
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2.7 Owner requirements
Safety-conscious working
1. Only operate the product in a technically flawless state.
2. Operate the product in line with its intended purpose, safety and hazard-conscious and only in
compliance with these operating instructions.
3. Fulfill the following instructions and monitor the observation of the following instructions:
–Proper use
–Generally applicable safety instructions and accident prevention regulations
–International, national and locally applicable standards and guidelines
–Additional product-related guidelines and regulations
4. Only use original parts or parts approved by Pfeiffer Vacuum.
5. Keep the operating instructions available at the place of installation.
6. Ensure personnel qualification.
2.8 Personnel qualification
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications and the necessary experience or who have completed the necessary training as
provided by Pfeiffer Vacuum.
Training people
1. Train the technical personnel on the product.
2. Only let personnel to be trained work with and on the product when under the supervision of
trained personnel.
3. Only allow trained technical personnel to work with the product.
4. Before starting work, make sure that the commissioned personnel have read and understood
these operating instructions and all applicable documents, in particular the safety, maintenance
and repair information.
2.8.1 Ensuring personnel qualification
Specialist for mechanical work
Only a trained specialist may carry out mechanical work. Within the meaning of this document, special-
ists are people responsible for construction, mechanical installation, troubleshooting and maintenance
of the product, and who have the following qualifications:
●Qualification in the mechanical field in accordance with nationally applicable regulations
●Knowledge of this documentation
Specialist for electrotechnical work
Only a trained electrician may carry out electrical engineering work. Within the meaning of this docu-
ment, electricians are people responsible for electrical installation, commissioning, troubleshooting, and
maintenance of the product, and who have the following qualifications:
●Qualification in the electrical engineering field in accordance with nationally applicable regulations
●Knowledge of this documentation
In addition, these individuals must be familiar with applicable safety regulations and laws, as well as the
other standards, guidelines, and laws referred to in this documentation. The above individuals must
have an explicitly granted operational authorization to commission, program, configure, mark, and earth
devices, systems, and circuits in accordance with safety technology standards.
Trained individuals
Only adequately trained individuals may carry out all works in other transport, storage, operation and
disposal fields. Such training must ensure that individuals are capable of carrying out the required activi-
ties and work steps safely and properly.
2.8.2 Personnel qualification for maintenance and repair
Advanced training courses
Pfeiffer Vacuum offers advanced training courses to maintenance levels 2 and 3.
Safety
14/46

Adequately trained individuals are:
●Maintenance level 1
─Customer (trained specialist)
●Maintenance level 2
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Customer with Pfeiffer Vacuum service training
─Pfeiffer Vacuum service technician
2.8.3 Advanced training with Pfeiffer Vacuum
For optimal and trouble-free use of this product, Pfeiffer Vacuum offers a comprehensive range of
courses and technical trainings.
For more information, please contact Pfeiffer Vacuum technical training.
2.9 Operator requirements
Observing relevant documents and data
1. Read, observe and follow this operating instruction and the work instructions prepared by the op-
erating company, in particular the safety and warning instructions.
2. Install, operate and maintain the product only in accordance with these operating instructions.
3. Carry out all work only on the basis of the complete operating instructions and applicable docu-
ments.
4. Comply with the application limits.
5. Observe the technical data.
6. Please contact the Pfeiffer Vacuum Service Center if your questions on operation or maintenance
of the product are not answered by these operating instructions.
–You can find information in the Pfeiffer Vacuum service area.
Safety
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3 Product description
3.1 Function
The digital gauge has 2 measurement systems:
●Pirani measurement system
●Piezo-resistive measurement system
The gauge responds to measured value requests, type requests and adjustment commands.
device status
RS485
RS485
adr
9
11
15
5
13
3
7
1
1
2
3
Fig. 1: Structure of the RPT gauge
1 RS-485 address selector switch 3 "RS-485" connector
2 Status LED for the gauge
3.2 Identifying the product
You will need all the data from the rating plate to safely identify the product when communicating with
Pfeiffer Vacuum.
1. Read the data on the product rating plate.
2. Record this data.
3. Always have all rating plate specifications to hand.
3.3 Scope of delivery
The shipment includes the following parts:
●Gauge
●Operating instructions
Unpacking the product and checking completeness of the shipment
1. Unpack the product.
2. Remove the transport fasteners, transport protection etc.
3. Store the transport fasteners, transport protection etc. in a safe place.
4. Check that the shipment is complete.
5. Ensure that no parts are damaged.
Product description
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4 Transport and storage
4.1 Transporting the product
NOTICE
Damage caused by incorrect transportation
Transportation in unsuitable packaging, or failure to install all transport locks, can damage the prod-
uct.
►Comply with the instructions for safe transportation.
Packing
We recommend keeping the transport packaging and original protective cover.
General information regarding safe transport
►Observe the weight specified on the transport packaging.
►Where possible, always transport or ship the product in the original transport packaging.
►Always use dense and impact-proof transport packaging for the product.
►Remove the existing protective cover and transport protections only immediately prior to installa-
tion.
►Reattach transport locks and transport protections prior to each transport.
4.2 Storing the product
NOTICE
Damage caused by improper storage
Improper storage will lead to damage to the product.
Static charging, moisture, etc. lead to defects on the electronic components.
►Comply with the instructions for safe storage.
Packing
We recommend storing the product in its original packaging.
General information for safe storage
►Store the product in a cool, dry, dust-free place, where it is protected against impacts and me-
chanical vibration.
►Always use dense and impact-proof packaging for the product.
►Where possible, store the product in its original packaging.
►Store electronic components in antistatic packaging.
►Maintain the permissible storage temperature.
►Avoid extreme fluctuations of the ambient temperature.
►Avoid high air humidity.
►Seal connections with the original protective caps.
►Protect the product with the original transport protection (where available).
Transport and storage
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5 Installation
5.1 Establish vacuum connection
DANGER
Risk to life due to electric shock
An improperly earthed product is potentially fatal in the event of a fault.
►Connect the product galvanically with the earthed vacuum chamber.
►Ensure that the connection complies with the requirements of a protective bonding according to
EN 61010. (CF and VCR connections comply with this requirement.)
►Use electrically conductive centering rings and circlips for KF connections.
WARNING
Risk of injury resulting from overpressure in the vacuum system
Opening tensioning pieces with an overpressure > 1000 hPa in the vacuum system can lead to inju-
ries as a result of flying parts, and escaping process medium could prove harmful to health.
Elastomer seals in KF connections (e.g. O-rings) are not resistant to pressures > 2500 hPa. This
could prove harmful to health due to escaping process medium.
►Do not open any tensioning pieces when overpressure is prevalent in the vacuum system.
►Use suitable tensioning pieces for overpressure.
►Use tensioning pieces which can only be opened and closed using a tool (e.g. tightening strap-
circlip).
►Use sealing rings with an outer centering ring.
NOTICE
Impairment from contamination and damage
Touching the devices or components with bare hands increases the desorption rate and leads to in-
correct measurements. Dirt (e.g. dust, fingerprints, etc.) and damage impair the function.
►When working on high or ultra high vacuum systems, always wear clean, lint-free and powder-
free laboratory gloves.
►Only use clean tools.
►Make sure that the connection flanges are free of grease.
►Remove protective caps and protective covers from flanges and connections only when necessa-
ry.
►Carry out all work in a well lit area.
Prerequisites
●Appropriate ambient conditions
●Operating temperature within permissible range
●Adequate room available for electrical connection (e.g. permissible bending radii for cables)
Installation
18/46

5
1
4
3
2
Fig. 2: Establish vacuum connection
1 Seal with centering ring 4 Seal with centering ring and filter
2 Gauge 5 Tensioning piece
3 Protective cap
Recommendations
►Ensure where possible that the gauge is not exposed to any vibrations during operation, as vibra-
tions in general will lead to deviations in the measured values.
►Mount the gauge in a horizontal to upright mounting orientation (flange facing downwards).
–This prevents condensate and particles from accumulating in the measurement chamber.
►Fit a seal with centering ring and filter for applications susceptible to pollution and to protect the
measuring system against contamination.
Procedure
1. Remove the protective cap and store in a safe place.
2. Assemble the gauge with vacuum components from the Pfeiffer Vacuum Components Shop on
the vacuum system.
5.2 Create "RS-485" connection
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.
NOTICE
Property damage due to ground contact of electronics
Disconnecting or connecting the "RS-485" plug-and-socket connection with the voltage supply
switched leads to the destruction of electronic components.
►Always interrupt the voltage supply before you plug in or unplug the “RS-485” power supply plug.
►Switch off the power supply pack.
►After switching off the power supply pack, wait until the residual load has dispersed completely
before disconnecting or connecting the plug-and-socket connection.
Installation
19/46

Connection to DPG 202 display and control unit
You can only connect the RPT 200 to the DPG 202. Connecting the RPT 201 is not possi-
ble.
The connector designated "RS-485" is intended for connecting an external power supply pack (TPS), a
measuring instrument and control unit (DPG) or a PC.
1 2
34
5
Fig. 3: Terminal assignment of RS-485 connecting socket
1 RS-485 D+ 4 RS-485 D-
2 +24 V DC 5 not connected
3 GND
Connect Pfeiffer Vacuum display and control units or a PC
►Use a connecting cable from the DigiLine accessories range.
►Connect only one external control unit to the RS-485 interface at a time.
►If needed, connect a PC via the USB/RS-485 converter.
Installation
20/46