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NORBAR TORQUE TOOLS LTD, Beaumont Road, Banbury, Oxfordshire, OX16 1XJ, UNITED KINGDOM
www.norbar.com
TST / TTT / TTL Series 2
SERVICE MANUAL (PART NO. 34296)
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4
7
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Tel : + 44 (0) 1295 270333,
ISSUE 1
2
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5
6
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9
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ZERO
0
Fax : + 44 (0) 1295 753643
enquiry@norbar.com

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Summarization of Contents

Section 1: Introduction to Norbar TST, TTT, TTL Series 2
1.1 Manual Scope
Defines the purpose and scope of this service manual for Norbar instruments.
1.2 Hidden Features and Limitations
Covers hidden features, limitations of use, and packaging for shipping.
1.4 Repackaging, Disposal & Abbreviations
Details packaging for shipping, disposal considerations, and common abbreviations.
Section 2: Instrument Testing Procedures
2.1 Testing Scope
Details tests for TST, TTT & TTL instruments to ensure they are working, without opening the case.
2.2 Tests to Complete
Lists specific tests including visual inspection, power supply, inputs, menus, and outputs.
Section 3: Instrument Calibration Check
3.1 Calibration Check Scope
Describes the method for checking the instrument's calibration using a digital voltmeter.
3.2 Equipment Required for Calibration
Lists essential equipment needed for instrument calibration, including voltmeters and a test fixture.
3.3 Calibration Considerations
Outlines environmental and preparation requirements for accurate instrument calibration.
3.4 Instrument Calibration Procedure
Step-by-step guide for performing instrument calibration, including setting zero and full scale.
Section 4: Transducer Calibration
4.1 Transducer Calibration Scope & Equipment
Explains how to calibrate SMART transducers and lists the required equipment.
4.3 Calibration Considerations
Specifies environmental and preparation requirements for transducer calibration.
4.4 As Found / As Left Results
Describes the process of recording 'As Found' and 'As Left' calibration results.
4.5 Transducer Calibration Procedure
Provides a simplified procedure for calibrating torque transducers, including loading and recording.
Section 5: Instrument Operation
5.1 Scope and General Operation
Covers operational aspects and provides a general description of TST/TTT/TTL instruments.
5.3 Setting and Resetting Stored Data
Details how to record, transfer, re-initialize, and set up transducers.
5.4 Special Features
Highlights features not in the handbook, such as power down time and hold display logo.
5.5 Transducer Linearization
Explains how to calibrate SMART transducers using polynomial constants (a, b, c).
Section 6: Repair and Maintenance
6.1 Scope and Replaceable Parts
Introduces the repair section and lists replaceable parts and non-serviceable items.
6.3 Front Panel Removal
Provides instructions on safely removing and replacing the front panel, with ESD precautions.
6.4 Internal Settings Adjustment
Covers adjustment of potentiometers for zero setting, display contrast, and switch settings.
6.5 Internal Connections
Details pad connections from the front panel to the connector PCB for TST, TTT, and TTL.
6.6 External Connectors
Lists pin functions for Transducer, Serial Port, and Ancillaries connectors.
6.7 Error & Warning Numbers
Provides a reference for error and warning messages and their corresponding comments or solutions.
Section 7: Parts List
7.1 Parts List Scope
Introduces the section listing items used in the manufacture of TST, TTT & TTL instruments.
7.2 Parts List for TST 2
Detailed list of parts for the TST 2 (Model No. 43212).
7.3 Parts List for TST 10
Detailed list of parts for the TST 10 (Model No. 43213).
7.4 Parts List for TST 25
Detailed list of parts for the TST 25 (Model No. 43214).
7.5 Parts List for Rundown Assembly TST 2
List of parts for the TST 2 Rundown Assembly (Model No. 50539).
7.6 Parts List for Rundown Assembly TST 10
List of parts for the TST 10 Rundown Assembly (Model No. 50540).
7.7 Parts List for Rundown Assembly TST 25
List of parts for the TST 25 Rundown Assembly (Model No. 50541).
7.8 Parts List for TTT
Detailed list of parts for the TTT (Model No. 43215).
7.9 Parts List for TTL
Detailed list of parts for the TTL (Model No. 43216).

Table of Contents