Hart Scientific 9115 Manuel utilisateur

9115 Furnace

User Manual

Rev. 761301

HART

SCIENTIFIC

Hart Scientific

799 E. Utah Valley Drive

American Fork, Utah 84003-9775

Telephone: (801) 763-1600 • Fax: (801) 763-1010

Internet: http://www.hartscientific.com

WARNING

To ensure the safety of operating personnel, and to avoid damage to this equipment:

DO NOT operate this unit without a properly grounded, properly polarized power cord.

DO NOT connect this unit to a non-grounded, non-polarized outlet.

DO USE a ground fault interrupt device.

WARNING

HIGH VOLTAGE

is used in the operation of this equipment.

SEVERE INJURY OR DEATH

may result if personnel fail to observe safety precautions.

Before working inside the equipment, turn power off and disconnect power cord.

WARNING

This unit contains ceramic fiber or other refractories, which can result in the following:

May be irritating to skin, eyes, and respiratory tract.

May be harmful if inhaled.

May contain or form cristobalite (crystalline silica) with use at high temperatures (above 1600°F) which can

cause severe respiratory disease.

Possible cancer hazard based on tests with laboratory animals. Animal studies to date are inconclusive.No

human exposure studies with this product have been reported.

Service personnel coming into contact with these materials should take proper precautions when handling

them. Before maintaining this equipment, read the applicable MSDS (Material Safety Data Sheets).

WARNING

HIGH TEMPERATURES PRESENT

in this equipment

FIRES AND SEVERE BURNS

may result if personnel fail to observe safety precautions.

WARNING

To ensure the safety of personnel, and to avoid damage to equipment:

DO NOT use this unit for any application other than calibration work.

DO NOT use this unit in environments other than those listed in the user's manual.

Continuous use of this equipment at high temperatures for extended periods of time

requires caution.

Completely unattended high temperature operation is not recommended for

safety reasons.

Components and heater lifetimes can be shortened by continuous high temperature operation.

Follow all safety guidelines listed in the user's manual.

CAUTION

In the unlikely event that the heat pipe should leak:

DO NOT attempt to put out the fire with water or chemical fire extinguishers.

SMOTHER THE FIRE WITH DRY SODA ASH

See the MSDS at the back of this manual.

WARNING

CALIBRATION EQUIPMENT SHOULD ONLY BE USED BY TRAINED PERSONNEL.

Table of Contents

1 Introduction ................................9

2 Specifications and Environmental Conditions ............11

2.1 Specifications...................................11

2.2 Environmental Conditions ............................11

2.3 Warranty .....................................11

3 Safety Guidelines ............................13

4 Installation ................................15

4.1 Unpacking ....................................15

4.2 Location .....................................15

4.3 “Dry-out” Period .................................15

4.4 Power.......................................15

4.5 Plumbing .....................................15

4.6 Heat Pipe Installation...............................15

5 Parts and Controls............................17

5.1 Control Panel...................................17

5.1.1 Controller...........................................17

5.1.2 System Fuses ........................................18

5.2 Furnace Core...................................18

5.3 Access Well ...................................18

5.4 Back Panel ....................................18

6 General ..................................21

6.1 Sodium Heat Pipe Information ..........................21

6.1.1 Minimum Temperature and Heat-Up Rate ..........................21

6.1.2 Safety Precautions ......................................21

6.1.3 Life Expectancy .......................................21

7 Controller Operation...........................23

7.1 Well Temperature.................................23

7.2 Temperature Set-point ..............................23

7.2.1 Programmable Set-points ..................................23

7.2.2 Set-point Value........................................23

7.2.3 Temperature Scale Units...................................25

7.3 Scan .......................................25

7.3.1 Scan Control .........................................25

7.3.2 Scan Rate ..........................................25

7.4 Ramp and Soak Program ............................25

7.4.1 Program Points........................................25

7.4.2 Number of Program Points..................................25

7.4.3 Editing Program Set-Points .................................26

7.4.4 Program Function Mode ...................................26

7.4.5 Program Control .......................................27

7.5 Secondary Menu .................................27

7.6 Heater Power...................................27

7.7 Proportional Band ................................27

7.8 Controller Configuration .............................28

7.9 Operating Parameters ..............................28

7.9.1 High Limit ..........................................28

7.9.2 Soft Cut-out .........................................28

7.10 Serial Interface Parameters ...........................28

7.10.1 BAUD Rate..........................................29

7.10.2 Sample Period ........................................29

7.10.3 Duplex Mode .........................................29

7.10.4 Linefeed ...........................................29

7.11 Calibration Parameters..............................30

7.11.1 Hard Cut-out .........................................30

7.11.2 DC1 .............................................30

7.11.3 DC2 .............................................30

8 Digital Commmunication Interface ...................31

8.1 Serial Communications..............................31

8.1.1 Wiring ............................................31

8.1.2 Setup.............................................31

8.1.2.1 BAUD Rate.....................................31

8.1.2.2 Sample Period ...................................31

8.1.2.3 Duplex Mode....................................32

8.1.2.4 Linefeed ......................................32

8.1.3 Serial Operation .......................................32

8.2 Interface Commands ...............................32

9 Freeze Point Realization ........................35

9.1 General......................................35

9.2 Installing the Metal Freeze Point Cell.......................35

9.3 How to realize the freezing point of silver ....................35

9.4 Safety Precautions ................................37

10 Maintenance ...............................39

11 Troubleshooting .............................41

11.1 Troubleshooting..................................41

11.1.1 Incorrect Temperature Reading ...............................41

11.1.2 The unit heats slowly.....................................41

11.1.3 If the display flashes any of the following: “err 1–err 5” ...................41

11.1.4 If the display flashes “err 6” .................................41

11.1.5 If the display flashes “err 7 or err 8” .............................41

11.2 Wiring Diagram..................................42

vii

Figures and Tables

Figure 1. Front Control Panel (cover door remove) ...................17

Figure 2. Furnace Core Diagram ............................19

Figure 3. Back Panel ..................................20

Figure 4. Controller Operation Flowchart ........................24

Figure 5. Serial Cable Wiring ..............................31

Table 1.Digital Communications Commands ......................33

Digital Communications Commands continued.....................34

Figure 6. Metal Freeze Point Cell installed in canister .................36

Figure 7. Testing Uniformity ...............................40

Figure 8. Wiring Diagram ................................42

1 Introduction

The Hart Scientific Model 9115 Furnace has a tem-

perature range of 550° C to 1000° C and is designed

for use in achieving Aluminu or Silver Freezing Point

measurements.The Model 9115 may also be used to

make comparison measurements using a specially

designed quartz/graphite equilibration block.

The furnace utilizes a sodium heat pipe to maintain a

uniform temperature over the length of the Metal

Freeze point cell. The temperature controller is pro-

grammable,afeaturethatmaybeconvenientlyusedto

simplify the melting, freeze initiation, and plateau con-

trol.The temperature control and uniformity of the fur-

naceallowstheusertoachieveplateausrangingmany

hours in length.

Note: Many of the illustrations and examples used in

this manual assume the use of the silver point cell.Ei-

ther ofthe cellsindicatedmaybeused withtheappro-

priate set-points.

Model 9115 Manual Rev. 761301 9

10 Manual Rev. 761301 Model 9115

2 Specifications and Environmental

Conditions

2.1 Specifications

Operating Range 550°C to 1000°C

Set-Point Resolution 0.1°C

Display Resolution 0.1°C below1000°C, 1°C

above 1000°C

Heater Power 2500 watts

Exterior Dimensions Height: 33 inches

Width: 24 inches

Front to Back: 16 inches

Power Requirements 230 VAC (±10%), 50/60

Hz, 1 Phase, 12 Amps

Shipping Weight 130 lb.

2.2 Environmental Conditions

Although the instrument has been designed for opti-

mum durability and trouble-free operation, it must be

handled with care.The instrument should not be oper-

ated in an excessively dusty or dirty environment.

Maintenance and cleaning recommendations can be

found in the Maintenance Section of this manual.

The instrument operates safely under the following

conditions:

•temperature range:5 - 50°C (41 - 122°F)

•ambient relative humidity:15 - 50%

•pressure: 75kPa - 106kPa

•mains voltage within ± 10% of nominal

•vibrations in the calibration environment

should be minimized

•altitude does not effect the performance or

safety of the unit

If the unit is operating at temperatures above 600°C,

cooling coils are accessible on the rear of the chassis

to prevent the furnace heat from loading down the

roomairconditioningsystem.(SeeSection4.5Plumb-

ing)

2.3 Warranty

The 9115 Metrology furnace is covered bya1year

warranty that takes effect 10 days after the product is

shipped.Themanufacturerwillprovidepartsandlabor

without charge for repair or replacement of the instru-

ment due to defects in material or workmanship. The

warrantywillnotapplyiftheproducthasnotbeenused

according to the instruction manual or has been tam-

pered with by the user. For service or assistance,

please contact the manufacturer.

Hart Scientific, Inc.

799 East Utah Valley Drive

American Fork, UT 84003-9775

Phone:(801) 763-1600 Fax:(801) 763-1010

E-mail: support@hartscientific.com

Model 9115 Manual Rev. 761301 11

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