Fluke 9112A User Manual

Hart Scientific

9112A

Calibration Furnace

User’s Guide

Rev. 5B2901

Fluke Corporation, Hart Scientific Division

799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA
Phone: [phone] • Telefax: +1.801.763.1010
E-mail: [e-mail]

www.hartscientific.com

Subject to change without notice. • Copyright © 2005 • Printed in USA

Rev. 5B2901

Table of Contents

1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 5

2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Specifications and Environmental Conditions . . . . . . . . . 11

3.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . 11

3.3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Unpacking & Inspection . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.3 “Dry-out” Period . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.5 Equilibration Block Assembly Installation . . . . . . . . . . . . . 14

4.6 Probe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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

5.1 Front View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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

5.1.2 Over Temperature Cutout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.3 Power and Heater Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2 Heater Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.1 Equilibration Block Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.2 Temperature Control and Cutout Sensor . . . . . . . . . . . . . . . . . . . . 20

5.3 Back View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.3.1 The Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.3.2 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.3.3 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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6.2 Operating the Furnace . . . . . . . . . . . . . . . . . . . . . . . . 23

7 Digital Communication Interface . . . . . . . . . . . . . . . . 25

8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

9 Appendix A - Material Safety Data Sheets (MSDS) . . . . . . 29

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Figures

Figure 1 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 2 Sectional Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 3 Back View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4 RS-232 Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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1 Before You Start

1.1 Symbols Used

Table 1 lists the International Electrical Symbols. Some or all of these symbols
may be used on the instrument or in this manual.

Tabl e 1 International Electrical Symbols

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

1 Before You Start

Symbols Used

DC

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

On

1

9112A Calibration Furnace

User’s Guide

Symbol Description

Canadian Standards Association

OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re
fers to the level of Impulse Withstand Voltage protection provided. Equipment of
OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from
the fixed installation. Examples include household, office, and laboratory appliances.

C-TIC Australian EMC Mark

The European Waste Electrical and Electronic Equipment (WEEE) Directive
(2002/96/EC) mark.

1.2 Safety Information

Use this instrument only as specified in this manual. Otherwise, the protection
provided by the instrument may be impaired.

The following definitions apply to the terms “Warning” and “Caution”.

• “WARNING” identifies conditions and actions that may pose hazards to
the user.

• “CAUTION” identifies conditions and actions that may damage the in­strument being used.

1.2.1

WARNINGS

To avoid personal injury, follow these guidelines.

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DISCLAIMER: Hart Scientific manufactures instruments for the purpose

of temperature calibration. Instruments used for applications other than
calibration are used at the discretion and sole responsibility of the cus
tomer. Hart Scientific cannot accept any responsibility for the use of in

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struments for any application other than temperature calibration.

GENERAL

Appropriate personal safety protection should be worn by the operator at all
times while using the furnace.

DO NOT use the instrument for any application other than calibration work.
The instrument was designed for temperature calibration. Any other use of the
unit may cause unknown hazards to the user.

DO NOT use the unit in environments other than those listed in the user’s
guide.

Completely unattended operation is not recommended.

2

1 Before You Start

Safety Information

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

Calibration Equipment should only be used by Trained Personnel.

If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired or safety hazards may
arise.

Inspect the instrument for damage before each use. DO NOT use the instrument
if it appears damaged or operates abnormally.

Before initial use, or after transport, or after storage in humid or semi-humid
environments, or anytime the instrument has not been energized for more than
10 days, the instrument needs to be energized for a “dry-out” period of 2 hours
before it can be assumed to meet all of the safety requirements of the IEC
1010-1. If the product is wet or has been in a wet environment, take necessary
measures to remove moisture prior to applying power such as storage in a low
humidity temperature chamber operating at 50°C for 4 hours or more.

The instrument is intended for indoor use only.

BURN HAZARD

High temperatures may be present in this equipment. Fires and severe burns
may result if personnel fail to observe safety precautions.

The furnace generates extreme temperatures. Precautions must be taken to pre­vent personal injury or damage to objects. Probes may be extremely hot when
removed from the furnace. Cautiously handle probes to prevent personal injury.
Carefully place probes on a heat resistant surface rack until they are at room
temperature.

DO NOT lift the back of this instrument with the equilibration block in place.
The equilibration block will fall out of the instrument.

DO NOT operate near flammable materials. Extreme temperatures could ignite
the flammable material.

Use of this instrument at HIGH TEMPERATURES for extended periods of
time requires caution.

DO NOT touch the well access cover of the instrument, it is extremely hot.

For compliance with IEC 1010-1, it is recommended that the cutout mode al

­ways be set to the manual mode requiring user intervention to reset the
instrument.

Take extreme care in handling hot probes. The extreme temperatures generated
in a furnace of this type can cause serious personal injury. Do not touch them
on external surfaces of the furnace or set them on any other surfaces unable to
withstand those temperatures. A fire hazard exists. Do not touch the access tube
end plate or severe burns can result.

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9112A Calibration Furnace

User’s Guide

ELECTRICAL HAZARD

These guidelines must be followed to ensure that the safety mechanisms in this
instrument will operate properly. This instrument must be plugged into a 230
VAC (± 10%) 50/60 Hz only electric outlet. The power cord of the instrument
is equipped with a three-pronged grounding plug for your protection against
electrical shock hazards. It must be plugged directly into a properly grounded
three-prong receptacle. The receptacle must be installed in accordance with lo
cal codes and ordinances. or adapter plug. Additionally, the instrument has a
Permanent Earth Ground that must be connected during use. DO NOT use an
extension cord Consult a qualified electrician.

Always replace the power cord with an approved cord of the correct rating and
type. If you have questions, contact a Hart Scientific Authorized Service Center
(see Section 1.3).

The instrument is not equipped with easily accessible fuses. The fuses are lo
cated inside the control drawer. We do not recommend replacing the fuses with
out calling a Hart Scientific Authorized Service Center first.

High voltage is used in the operation of this equipment. Severe injury or death
may result if personnel fail to observe the safety precautions. Before working
inside the equipment, turn off the power and disconnect the power cord.

Always ensure that the equilibration block ground is connection prior to use of
the instrument.

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1.2.2

Cautions

Always operate this instrument at room temperature between 41°F and 104°F
(5°C to 40°C). Allow sufficient air circulation by leaving at least 18 inches (45
cm) of clearance around the instrument. DO NOT place instrument in a corner
or block the back of the instrument. Extreme temperatures are emitted from the
back and front of the furnace. Allow sufficient space in front of the furnace to
work and to insert and remove the probes.

Read Section 4, Installation, before placing the instrument into service.

DO NOT use fluids to clean out the well. Fluids could leak into and damage the
instrument.

Never introduce any foreign material into the probe hole of the insert. Fluids,
etc. can leak into the instrument causing damage.

DO NOT change the values of the calibration constants from the factory set
values. The correct setting of these parameters is important to the safety and
proper operation of the unit.

Read and understand the controller operation prior to operating the instrument.
The controller manufacturer’s manual is included with the instrument.

DO NOT operate this instrument in an excessively wet, oily, dusty, or dirty
environment.

4

1 Before You Start

Authorized Service Centers

The unit is a precision instrument. Although it has been designed for optimum
durability and trouble free operation, it must be handled with care.

Most probes have handle temperature limits. Be sure that the probe handle tem
perature limit is not exceeded in the air above the instrument.

The instrument and any thermometer probes used with it are sensitive instru

­ments that can be easily damaged. Always handle these devices with care. Do
not allow them to be dropped, struck, stressed, or overheated.

When calibrating PRTs always follow correct calibration procedure and cali

­brate from high temperatures to low temperatures with the appropriate triple
point of water checks. Never immerse a wet or cold PRT into a bath filled with
hot medium. Severe damage to the PRT may result as well as personal injury to
the calibration technician.

This furnace is not designed to be portable. Therefore, moving the furnace once
it has been installed should be kept to a minimum. To safely move the furnace,
two people are required. One person should lift the furnace at each end of the
furnace, place their hand under the control drawer, and lift simultaneously be

­ing careful not to tip. Ensure that the furnace is de-energized and cooled to less
then 100°C. Remove the equilibration block prior to moving. The equilibration
block can damage the fused silica tube that is extremely fragile.

The control probe must be inserted properly in the instrument and plugged into
the socket at the back of the furnace. DO NOT operate the furnace without the
control probe properly inserted and attached. The furnace will not operate cor­rectly without the control probe. Injury to operating personnel and permanent
damage to the furnace could occur.

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

If a mains supply power fluctuation occurs, immediately turn off the furnace.
Power bumps from brown-outs and black-outs can damage the instrument. Wait
until the power has stabilized before re-energizing the furnace.

The probe and the block may expand at different rates. Allow for probe expan
sion inside the well as the block heats. Otherwise, the probe may become stuck
in the well.

Be aware that the equilibration block expands as the furnace heats. It will ex

­tend beyond the front of the furnace at high temperatures anywhere from ¼ to
approximately ½ inch. This is normal and is due to thermal expansion.

Take care that all sensors used as references or being calibrated in the furnace
are capable of withstanding the desired temperature range to be used.

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1.3 Authorized Service Centers

Please contact one of the following Authorized Service Centers to coordinate
service on your Hart product:

5

9112A Calibration Furnace

User’s Guide

Hart Scientific, Inc.

Fluke Nederland B.V.

799 E. Utah Valley Drive

American Fork, UT 84003-9775

USA

Phone: [phone]

Telefax: +1.801.763.1010

E-mail: [e-mail]

Customer Support Services

Science Park Eindhoven 5108

5692 EC Son

NETHERLANDS

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

Fluke Int'l Corporation

Service Center - Instrimpex

Room 2301 Sciteck Tower

22 Jianguomenwai Dajie

Chao Yang District

Beijing 100004, PRC

CHINA

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

Fluke South East Asia Pte Ltd.

Fluke ASEAN Regional Office

Service Center

60 Alexandra Terrace #03-16

The Comtech (Lobby D)

118502

SINGAPORE

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1 Before You Start

Authorized Service Centers

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

When contacting these Service Centers for support, please have the following

information available:

Model Number

•

Serial Number

•

Voltage

•

Complete description of the problem

•

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2 Introduction

The 9112A Calibration Furnace was designed specifically for calibrating PRTs,
fiber optic sensors and thermocouples at higher temperature ranges up to
1100°C. The furnace utilizes an equilibration block capable of making compar
ison measurements on multiple probes. The standard equilibration block is
sized for ¼ inch probes, however, custom options are possible. Temperature
stability is better than ± 0.1°C throughout the range and the gradient between
wells at full insertion is less than 0.5°C (± 0.25°C).

The temperature control system utilizes a digital controller with a Type K ther
mocouple control sensor and RS-232 interface. The controller displays the set
temperature and the actual temperature simultaneously. The display shows tem
perature to the nearest degree in °C or °F (shipped in °C). The temperature is
set with convenient up and down buttons on the front panel.

Sensors being calibrated as well as the furnace itself are protected from exces
sive temperature with an over-temperature cutout. The cutout is easily adjusted
from the front panel. This device is relay operated and protects against the pos­sibility of thermal runaway due to a shorted solid-state relay which controls the
heaters.

2 Introduction

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9

3 Specifications and Environmental Conditions

3 Specifications and Environmental

Conditions

3.1 Specifications

Operating Range 300°C to 1100°C

Stability 300°C ±0.05°C

500°C ±0.05°C
700°C ±0.1°C
1000°C ±0.1°C
1100°C ±0.1°C

Uniformity 300°C ±0.05°C

500°C ±0.08°C
700°C ±0.2°C
1000°C ±0.25°C
1100°C ±0.3°C

Stabilization Time Typically 2 hours midrange, slower at the low temperature end (4

hours), faster at the high temperature end

Heater Power 3700 Watts High

Power Requirements 230 VAC (±10%), 50/60 Hz, 20 A

Outside Dimensions 18” H x 14.25”W x 26”D (457mm x 362mm x 660mm)

Weight 72.5 lbs

Specifications

3.2 Environmental Conditions

Although the instrument has been designed for optimum durability and trou­ble-free operation, it must be handled with care. The instrument should not be
operated in an excessively dusty or dirty environment. Maintenance and clean
ing recommendations can be found in the Maintenance Section of this manual.

The instrument operates safely under the following conditions:

•

temperature range: 5 - 40°C (41 - 104°F)

•

ambient relative humidity: 15 - 50%

•

pressure: 75kPa - 106kPa

•

mains voltage within ± 10% of nominal

•

vibrations in the calibration environment should be minimized

•

altitude less than 2000 meters

•

indoor use only

3.3 Warranty

Fluke Corporation, Hart Scientific Division (Hart) warrants this product to be
free from defects in material and workmanship under normal use and service

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11

9112A Calibration Furnace

User’s Guide

for a period as stated in our current product catalog from the date of shipment.
This warranty extends only to the original purchaser and shall not apply to any
product which, in Hart’s sole opinion, has been subject to misuse, alteration,
abuse or abnormal conditions of operation or handling.

Software is warranted to operate in accordance with its programmed instruc
tions on appropriate Hart products. It is not warranted to be error free.

Hart’s obligation under this warranty is limited to repair or replacement of a
product which is returned to Hart within the warranty period and is determined,
upon examination by Hart, to be defective. If Hart determines that the defect or
malfunction has been caused by misuse, alteration, abuse or abnormal condi
tions or operation or handling, Hart will repair the product and bill the pur
chaser for the reasonable cost of repair.

To exercise this warranty, the purchaser must forward the product after calling
or writing Hart for authorization. Hart assumes NO risk for in-transit damage.

For service or assistance, please contact an Authorized Service Center (see Sec
tion 1.3).

THE FOREGOING WARRANTY IS PURCHASER’S SOLE AND EXCLU­SIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EX­PRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
IMPLIED WARRANTY OR MERCHANTABILITY, OR FITNESS FOR ANY
PARTICULAR PURPOSE OR USE. HART SHALL NOT BE LIABLE FOR
ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAM­AGES OR LOSS WHETHER IN CONTRACT, TORT, OR OTHERWISE.

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