Isotech Pegasus 4853 Operating Manual

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User Maintenance Manual

PEGASUS ADVANCED 4853

Isothermal Technology Limited, Pine Grove, Southport, Merseyside, PR9 9AG, England

Telephone: +44 (0)1704 543830 Fax: +44 (0)1704 544799 Email: info@isotech.co.uk Website: www.isotech.co.uk

Pegasus (Advanced) 01-10/14

Guarantee

Isothermal Technology Limited

This instrument has been manufactured to exacting standards and is guaranteed for twelve months against electrical break-down or mechanical failure caused through defective material or workmanship, provided the failure is not the result of misuse.

In the event of failure covered by this guarantee, the instrument must be returned, carriage paid, to the supplier for examination and will be replaced or repaired at our option.

FRAGILE CERAMIC AND/OR GLASS INTERFERENCE WITH OR FAILURE INVALIDATE THIS GUARANTEE

PARTS ARE NOT COVERED BY	THIS GUARANTEE
TO PROPERLY MAINTAIN THIS	INSTRUMENT MAY

The company is always willing to give technical advice and assistance where appropriate. Equally, because of the programme of continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice. This publication is for information only.

This handbook contains information that has been reproduced with the kind permission of Eurotherm. Such data is subject to the following notice.

2014 Eurotherm Limited

Eurotherm, the Eurotherm logo, Chessell, nanodac, and Itools, are trademarks of Invensys plc, its subsidiaries and affiliates.

All rights are strictly reserved. No part of this document may be reproduced, modified or transmitted in any form by any means, neither may it be stored in a retrieval system other than for the purpose to act as an aid in operating the equipment to which the document relates, without the prior written permission of Invensys Eurotherm Limited.

Eurotherm Limited pursues a policy of continuous development and product improvement. The specifications in this document may therefore be changed without notice. The information in this document is given in good faith, but is intended for guidance only.

Isothermal Technology Limited

Pine Grove, Southport, Merseyside, PR9 9AG, England

Telephone: +44 (0)1704 543830 / Fax: +44 (0)1704 544799

Email: info@isotech.co.uk / Website: www.isotech.co.uk

Contents

1 UNPACKING AND INITIAL INSPECTION .................................................................................			5
2 BEFORE YOU USE THE EQUIPMENT.........................................................................................			6
3 SUMMARY OF SYMBOLS ..........................................................................................................			7
4 ELECTRICITY SUPPLY..............................................................................................................			8
5	THE UNIT MUST BE EARTHED ..........................................................................................		9
6	EMC INFORMATION........................................................................................................		10
7	CAUTIONARY NOTE .......................................................................................................		11
8	SAFETY WARNINGS .......................................................................................................		12
	8.1 DO NOT MODIFY OR DISASSEMBLE ..................................................................................................		12
	8.2 BEWARE OF ELECTRICAL CONSIDERATIONS ........................................................................................		12
	8.3 BE CAREFUL WHERE IT IS USED ......................................................................................................		12
	8.4 BE CAREFUL WITH EXTREMES OF TEMPERATURE .................................................................................		12
	8.5 BE CAREFUL WITH INSERTS ...........................................................................................................		12
9 CONSIDER THE ENVIRONMENT ............................................................................................			13
10 INTRODUCTION...................................................................................................................			14
	10.1 COMPARISON CALIBRATION ..........................................................................................................		14
	10.2 BASIC OPERATION......................................................................................................................		14
	10.3 SITE OR SELF-CONTAINED CALIBRATORS .........................................................................................		14
	10.4 EXTERNAL STANDARDS + BASIC ....................................................................................................		15
	10.5 ADVANCED CALIBRATORS ..........................................................................................................		15
11 MODE OF OPERATION .........................................................................................................			16
	11.1 METAL BLOCK BATH ...................................................................................................................		16
	11.1.1	Assembling the Insert ................................................................................................	16
	11.2 BLACKBODY SOURCE ...................................................................................................................		17
	11.2.1	Assembling the Insert ................................................................................................	17
	11.3 FAST COOL DOWN PROBE (OPTION) .......................................................................................		18
12 OPERATION OF THE ADVANCED DRY BLOCK TEMPERATURE CALIBRATOR .......................			19
	12.1 A TOUR OF THE EQUIPMENT ........................................................................................................		19
	12.2 THE USER INTERFACE START UP SCREEN AND CONTROLS ................................................................		20
	12.3 THE ISOTECH HOMEPAGE ..........................................................................................................		20
	12.4 THE THERMOSTAT TESTING PAGE ............................................................................................		20
	12.5 THE PROGRAM PAGE (NO ACTIVE PROGRAM) .................................................................................		21
	12.6 THE PROGRAM PAGE (ACTIVE PROGRAM RUNNING) .........................................................................		21
	12.7 THE USER ACCESS PAGE ...........................................................................................................		21
13 GETTING STARTED ..............................................................................................................			22
	13.1 CHANGING THE SET POINT...........................................................................................................		22
14 USING THE ADVANCED FEATURES OF THIS EQUIPMENT ...................................................			23
	14.1 TO SET FROM THE FRONT PANEL...................................................................................................		23
	14.1.1 Operator Access ..............................................................................................................		23
	14.1.2 Supervisor Access (in addition to the above functions) .......................................................		23
	14.1.3 Engineer Access ..............................................................................................................		23
	14.2 HOW TO LOG IN AS THE SUPERVISOR .........................................................................................		24
			3

14.3 HOW TO LOG IN AS THE ENGINEER .............................................................................................	24
14.4 HOW TO CHANGE INPUT SENSOR ON CHANNELS 1, 2 AND 3 ................................................................	25
14.5 THERMOSTAT TESTING USING THE ADVANCED UNIT..........................................................................	26
14.6 ENABLING THE AUTOTUNE FEATURE ............................................................................................	27
14.7 USING THE SETPOINT TRIM FEATURE ..........................................................................................	27
14.8 HOW TO CHANGE THE DATE AND TIME OR THE LANGUAGE OF THE ADVANCED EQUIPMENT..........................	28
14.9 THERMOMETER INPUT CHANNELS ...................................................................................................	28
14.10 PROCESS TO APPLY A USER CALIBRATION TO THE CONTROLLER USING A PRT CONNECTED TO CHANNEL 1 .......	29
14.11 THE NETWORK INTERFACE....................................................................................................	30
14.12 TO ACCESS THE NETWORK INTERFACE .....................................................................................	30
14.13 THE WEB BROWSER ..............................................................................................................	30
14.13.1 Supported Browsers:......................................................................................................	31
14.13.2 The clickable links will allow you to: ................................................................................	31
14.14 DATA LOGGING........................................................................................................................	31
14.15 FTP SERVER ARCHIVING ............................................................................................................	32
14.16 PROGRAMMER FUNCTION ...........................................................................................................	32
14.17 PROGRAM DETAILS ...................................................................................................................	33
14.17.1 Operation ......................................................................................................................	33
14.17.2 Status ...........................................................................................................................	33
14.17.3 Program ........................................................................................................................	33
14.17.4 Holdback Style...............................................................................................................	33
14.17.5 Program ........................................................................................................................	33
14.17.6 Ch1 Holdback ................................................................................................................	34
14.17.7 Ch1 Holdback value .......................................................................................................	34
14.17.8 Ch2 Holdback ................................................................................................................	34
14.17.9 Ch2 Holdback value .......................................................................................................	34
14.17.10 Ramp Style ..................................................................................................................	34
14.17.11 Time ...........................................................................................................................	34
14.17.12 Ch1 Ramp Units ...........................................................................................................	34
14.17.13 Ch2 Ramp Units ...........................................................................................................	34
14.18 HOW TO CREATE A SIMPLE PROGRAM USING THE CONTROLLER INTERFACE ............................................	35
14.19 TO ENABLE/RUN THIS PROGRAM...............................................................................................	36
14.20 TO EDIT AN EXISTING PROGRAM ................................................................................................	36
14.21 USING THE HOLDBACK FEATURE ................................................................................................	36
15 CONNECTING TEMPERATURE SENSORS..............................................................................	38
15.1 PLATINUM RESISTANCE THERMOMETERS, PRTS .................................................................................	38
15.2 INPUT CONNECTIONS ..................................................................................................................	38
15.3 CONNECTING THERMOCOUPLES......................................................................................................	38
15.4 CONNECTING 4 – 20MA CURRENT TRANSMITTERS..............................................................................	39
15.4.1 Using the Current Loop Interface (935-06-161) .................................................................	39
16 SPECIFICATION...................................................................................................................	40
17 CONNECTING TO A PC .........................................................................................................	41
17.1 ISOTECH CONFIG UTILITY ............................................................................................................	41
17.2 ISOTECH I-CAL EASY .................................................................................................................	42
17.3 PROGRAM EDITOR ......................................................................................................................	42
17.4 REVIEW ...................................................................................................................................	43
18 ACCESSORIES ......................................................................................................................	44

1 Unpacking And Initial Inspection

Our Packing Department uses custom designed packaging to send out your unit, but as accidents can still happen in transit, you are advised, after unpacking the unit, to inspect it for any sign of shipping damage and confirm that your delivery is in accordance with the packing check list. If you find any damage or that part of the delivery is missing notify us or our agent and the carrier immediately. If the unit is damaged you should keep the packing for possible insurance assessment.

2 Before You Use The Equipment

Please read the handbook and familiarise yourself with all warnings, hazards and safety information. Regularly inspect the equipment, accessories and electrical leads. Do not use if there is any sign of damage. Keep the equipment clean, only use a damp cloth. Do not use solvents or allows liquids to enter the case.

3 Summary of Symbols

	ISO3864 – Caution, read the entire manual before use

	IEC 417 – Caution, hot surface (risk of burn)

O	Off

l	On

	Waste Electrical and Electronic Equipment (WEEE directive) symbol

	Complies with European regulations (CE mark)

	USB symbol

	Ethernet RJ45 symbol

	Risk of Electrical Shock

4 Electricity Supply

Before connecting to the electricity supply please familiarise yourself with the parts of the manual relevant to your model.

Your unit's supply voltage requirement is specified on a label on the instrument along with the serial number. Only connect to a power supply matching the requirement stated on the equipment.

5 The Unit Must Be Earthed

This equipment is a Class 1 Appliance and must be earthed (grounded). Use the supplied power cord and plug it directly into an AC outlet with a protective earth.

If using an alternative cord ensure it is of adequate rating.

If fitting a plug to the cable we have supplied the cable is colour coded as follows:

Colour	Function
Green/yellow	Earth (Ground)
Brown	Live (line)
Blue	Neutral

Do not use the equipment if it is not correctly earthed. If in doubt consult Isothermal Technology Ltd or a qualified electrician.

6 EMC Information

This product meets the requirements of the European Directive on Electromagnetic Compatibility (EMC) 89/336/EEC as amended by EC Directive 92/31/EEC and the European Low Voltage Directive 73/25/EEC, amended by 93/68/EEC. To ensure emission compliance please ensure that connecting leads are fully screened.

The product meets the susceptibility requirements of EN 50082-1, criterion B.

7 Cautionary Note

Operators of this equipment should be adequately trained in the handling of hot and cold items. It is important the user has been trained about the selection and use of liquids over a wide temperature range. It is expected that personnel using this equipment will be competent with the management of apparatus which may be powered or under extremes of temperature and are able to appreciate the hazards which may be associated with and the precautions to be taken with, such equipment.

8 Safety Warnings

8.1 Do Not Modify Or Disassemble

Do not use the apparatus for jobs other than those for which it was designed, i.e. the calibration of thermometers

There are no user serviceable parts inside. Do not dismantle or modify the apparatus. For repair information contact Isothermal Technology Ltd

For equipment with fans, the fan should kept free from dust build up; a soft brush or vacuum cleaner may be used on the external grill

8.2 Beware Of Electrical Considerations

The equipment is for installation category II (transient voltages) and pollution degree II in accordance with IEC 664 at altitudes to 2000 metres

Sensor Input Connection must never exceed 30V with reference to ground

Thermostat test inputs should be voltage free: isolate from any voltage source during test

8.3 Be Careful Where It Is Used

The equipment is not for use in hazardous areas or in an environment close to flammable materials or gases

The equipment must be used on a flat level surface, with adequate space around it for air flow and avoid blocking ventilation slots

Ensure free space above the unit to avoid risk of burn or fire

The equipment should only be used indoors

Site in a way that allows access to the power switch, and to allow the cable to be disconnected

Avoid excessive heat, humidity, dust and vibration ensuring it will not be subjected to dripping or splashing liquids

8.4 Be Careful With Extremes Of Temperature

In normal use the calibration volume, inserts and probes will become very hot and present a burn hazard

Do not remove inserts, probes or handle the equipment when it is hot or cold.

Allow the equipment and accessories to reach a temperature between ambient and 70°C before switching off or storing the equipment in its case

Do not use the equipment outside its recommended temperature range

Operating the equipment at extremes of temperature for extended periods may call for early replacement of the heating assembly

Wear appropriate protective clothing

8.5 Be Careful With Inserts

Only use inserts supplied with, or ordered specifically for, this model

Do not handle inserts while they are very hot or cold

Inserts for low temperature models may melt and cause a fire if used in high temperature models

Only use Isotech inserts which are specially treated to avoid them from becoming stuck in the calibration volume

Do not use powders, liquids or compounds in the insert; this may lead to the insert or probes becoming stuck

9 Consider The Environment

The equipment should be recycled or disposed of in a proper way; following the Waste Electrical and Electronic Equipment (WEEE) directive

10 Introduction

The purpose of the Pegasus models is to provide an adjustable isothermal enclosure for calibration purposes. It has been designed to be rugged and easily maintained.

The isothermal enclosure consists of a small furnace into which an insert can be placed. Items for calibration are placed in suitably drilled holes in the insert. The replaceable inserts enable a variety of items to be calibrated.

The furnace consists of a specially wound tube assembly. A control sensor is used by the temperature controller to sense the furnace temperature.

An internal fan runs continuously and cools the electronics in the instrument.

Note: the units’ on/off switch is located on the power inlet. Take care NOT to switch the unit off when it is hot, allow to cool first.

10.1 Comparison Calibration

By definition, one compares industrial thermometers to a calibrated standard. There are three methods commonly used.

10.2 Basic Operation

Using the controller as the “calibrated standard”. This method means that the complete bath is calibrated by comparing the controller reading to a calibrated standard placed in the bath.

This is a common method but is unsafe since the control sensor is

a)inaccessible

b)in the wrong place to give correct temperature of the insert

For these reasons it fails to satisfy ISO9000 and gives large uncertainties.

The Pegasus should always be used with a calibrated sensor alongside the test devices.

10.3 Site or Self-Contained Calibrators

In these an indicator and external calibrated sensor are used to measure the temperature of the insert. This arrangement gives good results and traceability. To recalibrate however it does mean sending the whole calibrator back to the calibration laboratory. The calibrator is selfcontained, self-sufficient and meets ISO9000 requirements.

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