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Pfeiffer Vacuum TPG 256 A User Manual

Pfeiffer Vacuum TPG 256 A
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Operating manual
BG 805 186 BE / B (2005-07) 1
TPG 256 A
Vacuum measurement and control unit
for Compact Gauges
MaxiGauge™

Table of Contents

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Pfeiffer Vacuum TPG 256 A Specifications

General IconGeneral
TypeControl Unit
Frequency50/60 Hz
DisplayLCD
Number of Channels2
Communication InterfaceRS-232, RS-485
Power Supply24 VDC
Measurement PrincipleCapacitance
Pressure Range1.0E-9 - 1000 hPa (mbar)
OutputsAnalog
Operating Temperature0 °C to 50 °C
Storage Temperature-20 °C to 70 °C

Summary

Intended Use

Technical Data

Safety

Personnel Safety Qualifications

Specifies qualifications required for safe operation and maintenance.

Danger, Caution, and Note Symbols

Explains safety symbols and their meanings in the manual.

Safety Information Guidelines

General safety guidelines for installation and maintenance work.

Responsibility and Warranty

Outlines manufacturer's liability and warranty terms.

Commissioning

Commissioning Personnel

Qualifications required for unit commissioning.

Set-Up and Assembly

Instructions for rack or benchtop installation.

Power Connection Procedure

Procedure for connecting the unit to the power supply.

Connecting Gauges to Sensor Ports

Procedure for connecting vacuum gauges to sensor ports.

Control Connector Configuration

Configuration and connection of the control connector.

RS 232/422 Serial Interface Pinout

Pin assignment for RS232/422 serial interface.

RS 485/422 Isolated Interface Port

Details of the RS485/422 isolated serial interface.

Relay Connector for Switch Contacts

Connecting peripheral components via the relay connector.

Operating Elements and Modes

Operating Elements Overview

Describes softkeys, power switch, and indicators.

Operating Modes Overview

Overview of the unit's different operating modes.

Display Formats and Pressure Units

Display Formats Explained

Explains exponential and floating point display formats.

Pressure Unit Selection

Details available pressure units and selection criteria.

Cursor Functionality

Explains the cursor's function for parameter selection.

Operation

Operation Personnel

Specifies qualifications for unit operation.

Switching Unit On and Off

Procedure for powering the unit on and off.

Selecting Operating Mode

Navigating between different operating modes using softkeys.

Measurement Mode Operation

Displays measured values from connected gauges.

Setpoint Mode Configuration

Assigns switching functions and defines setpoints.

General Parameter Mode Settings

Configure system-wide parameters like interface and display.

Sensor Parameter Mode Configuration

Define parameters specific to each connected gauge.

Sensor Control Mode Configuration

Configure how gauges are switched on/off by other devices.

Status Messages Interpretation

Indicates system status and potential issues.

Error Messages Troubleshooting

Lists and explains error messages and their remedies.

Communication

Serial Interface Options

Overview of serial interface options for PC communication.

Communication Mnemonics

List of mnemonics used for communication with the unit.

Maintenance and Care

Maintenance Personnel

Specifies skills required for external cleaning.

Cleaning Procedures

Instructions for cleaning the unit's external and internal surfaces.

Unit Maintenance

Notes on unit maintenance and consulting gauge documents.

Accessories and Spare Parts

Sensor Cables

Ordering information for sensor connection cables.

Cable Elements

Details and ordering numbers for cable components.

Rack Accessories

Ordering information for rack mounting accessories.

Other Articles

Ordering information for additional accessories like stands and interfaces.

Decommissioning

Appendix

Validity Table

Table indicating parameter availability for different gauge types.

Pressure Unit Conversion

Table for converting between various pressure units.

Equipment Test Procedure

Instructions for performing unit tests by skilled personnel.

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