Isotech 414 Mode d'emploi

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Annealing Furnace model 414 Iss.3 –06/12

ANNEALING FURNACE

MODEL 414

User Maintenance Manual/Handbook

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

Tel: +44 (0)1704 543830 Fax: +44 (0)1704 544799 Internet: www.isotech.co.uk E-mail: [email protected]

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.

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Annealing Furnace model 414 Iss.3 –06/12

CONTENTS

EMC INFORMATION...................................................................................................................................................................... 3

ELECTRICAL SAFETY..................................................................................................................................................................... 3

HEALTH AND SAFETY INSTRUCTIONS ..................................................................................................................................4

GUARANTEE.................................................................................................................................................................................... 5

CAUTIONARY NOTE..................................................................................................................................................................... 6

UNPACKING AND INITIAL INSPECTION ................................................................................................................................7

ELECTRICITY SUPPLY...................................................................................................................................................................7

SPECIFICATION..............................................................................................................................................................................8

MODEL 414 ANNEALING FURNACE INTRODUCTION ........................................................................................................ 9

ANNEALING FURNACE .............................................................................................................................................................. 10

OPERATION................................................................................................................................................................................... 11

Altering the Furnace Temperature, (Setpoint) ............................................................................................................................. 11

COMMISSIONING ........................................................................................................................................................................ 12

ELIMINATING CONTAMINATION DURING THE CALIBRATION OF HIGH TEMPERATURE THERMOMETERS .. 13

IMPORTANT NOTE...................................................................................................................................................................... 14

MAINTENANCE ............................................................................................................................................................................ 15

GENERAL LAYOUT ...................................................................................................................................................................... 16

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Annealing Furnace model 414 Iss.3 –06/12

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 any serial communications connecting leads are

fully screened.

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

Symbol Identification

Publication

Description

ISO3864

Caution (refer to handbook)

IEC 417

Caution, Hot Surface

ELECTRICAL SAFETY

This equipment must be correctly earthed.

This equipment is a Class 1 Appliance. A protective earth is used to ensure the conductive parts can not become live

in the event of a failure of the insulation.

The protective conductor of the flexible mains cable which is coloured green/yellow MUST be connected to a suitable

earth.

The blue conductor should be connected to Neutral and the Brown conductor to Live (Line).

Warning: Internal mains voltage hazard. Do not remove the panels.

There are no user serviceable parts inside. Contact your nearest Isotech agent for repair.

Voltage transients on the supply must not exceed 2.5kV.

Conductive pollution, e.g. Carbon dust, must be excluded from the apparatus. EN61010 pollution degrees 2.

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Annealing Furnace model 414 Iss.3 –06/12

HEALTH AND SAFETY INSTRUCTIONS

1. Read this entire handbook before use.

2. Wear appropriate protective clothing.

3. Operators of this equipment should be adequately trained in the handling of hot and cold items and liquids.

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

thermometers.

5. Do not handle the apparatus when it is hot (or cold), unless wearing the appropriate protective clothing and

having the necessary training.

6. Do not drill, modify or otherwise change the shape of the apparatus.

7. Do not dismantle the apparatus.

8. Do not use the apparatus outside its recommended temperature range.

9. If cased, do not return the apparatus to its carrying case until the unit has cooled.

10. There are no user serviceable parts inside. Contact your nearest Isotech agent for repair.

11. Ensure materials, especially flammable materials are kept away from hot parts of the apparatus, to prevent

fire risk.

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Annealing Furnace model 414 Iss.3 –06/12

GUARANTEE

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 PARTS ARE NOT COVERED BY THIS GUARANTEE

INTERFERENCE WITH OR FAILURE TO PROPERLY MAINTAIN THIS INSTRUMENT MAY INVALIDATE THIS

GUARANTEE

RECOMMENDATION

The life of your ISOTECH Instrument will be prolonged if regular maintenance and cleaning to remove general dust

and debris is carried out.

ISOTHERMAL TECHNOLOGY LTD.

PINE GROVE, SOUTHPORT

PR9 9AG, ENGLAND

TEL: +44 (0) 1704 543830/544611

FAX: +44 (0)1704) 544799

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.

Page 6 of 16

Annealing Furnace model 414 Iss.3 –06/12

CAUTIONARY NOTE

ISOTECH PRODUCTS ARE INTENDED FOR USE BY TECHNICALLY TRAINED AND COMPETENT

PERSONNEL FAMILIAR WITH GOOD MEASUREMENT PRACTICES.

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.

Page 7 of 16

Annealing Furnace model 414 Iss.3 –06/12

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 note. 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.

ELECTRICITY SUPPLY

Before connecting to the electricity supply please familiarise yourself with the parts of the handbook relevant to your

model.

Your unit's supply voltage requirement is specified on a plate on the instrument along with the serial number. All

instruments will work on an electricity supply frequency of 50Hz or 60Hz.

The apparatus is provided with an approved power cord. If the plug is not suitable for your location then the plug

should be removed and replaced with an appropriate plug.

Take care to ensure the old plug is disposed safely.

The cable is colour coded as follows:

COLOUR

FUNCTION

Green/yellow

Earth (Ground)

Brown

Live (line)

Blue

Neutral

Please ensure that your unit is correctly connected to the electricity supply.

A Residual Current Devices sometimes referred to an RCD, ELCB or ground fault detector is included with the

220/240 V unit.

Page 8 of 16

Annealing Furnace model 414 Iss.3 –06/12

SPECIFICATION

Voltage

220/240 V

Power

1000 W

Supply Frequency

50/60Hz

Maximum Operating Temperature

1000°C

Working Volume

450mm x 50mm dia approx.

Dimensions

Height 880mm

Width 400mm

Depth 620mm

Weight (nett)

40kg

Page 9 of 16

Annealing Furnace model 414 Iss.3 –06/12

MODEL 414 ANNEALING FURNACE INTRODUCTION

One of the duties of a calibration laboratory manager is to ensure that the S.P.R.T.’s used in the Laboratory are fully

annealed and still within specification.

Just using the thermometers within the laboratory will cause work-hardening to take place within the platinum coil of

the SPRT.

Therefore regular annealing is required to ensure the S.P.R.T.’s are in an ideal condition.

In 1990 the new temperature scale ITS-90 specified the use of S.P.R.T.’s up to the Silver point (961.78°C). At these

temperatures quartz is very porous and in reducing atmospheres the S.P.R.T.’s can quickly become contaminated.

The Isotech Annealing Furnace offers a safe solution for those who wish to anneal S.P.R.T.’s up to 1000°C.

Page 10 of 16

Annealing Furnace model 414 Iss.3 –06/12

ANNEALING FURNACE

The Annealing Furnace has two independent control systems, one for temperature control and the other for over-

temperature protection.

The furnace uses a Eurotherm 2116 over-temperature cut-off controller. On these models RESET button is located

below the over-temperature controller. The SP value should be set approximately 50°C higher than the operating

controller setting. If this limit should be exceeded the red push button switch will reset the apparatus once the

furnace temperature has fallen below the SP value.

To turn on system power at start up (or as required), it is necessary to depress the red push button.

Altering the Alarm Temperature, (Setpoint)

1. Switch the unit on.

2. The controller will briefly show its software version before displaying an indication of the furnace

temperature.

3. Momentarily press either the UP or DOWN key once to display the alarm setpoint. This value should be set

to 50°C approximately above the operating controller temperature.

4. To alter the value press and hold the UP key to raise the value or the DOWN key to lower the value.

5. The display will return to show the nominal furnace temperature when no key is pressed for 0.5 second.

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