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9260
Mini Fixed-Point Cell Furnace
Users’ Guide
Rev. 611902
Hart Scientific
Rev. 611902
Fluke Corporation, Hart Scientific Division
799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA
Phone: +1.801.763.1600 • Telefax: +1.801.763.1010
E-mail: [email protected]
www.hartscientific.com
Subject to change without notice. • Copyright © 2005 • Printed in USA
Table of Contents
1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1 WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.2 CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Hart Scientific Authorized Service Centers . . . . . . . . . . . . . 5
2 Specifications and Environmental Conditions . . . . . . . . . . 7
2.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 “Dry-out” Period . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Setting the Temperature . . . . . . . . . . . . . . . . . . . . . . . 12
3.6 Changing Display Units . . . . . . . . . . . . . . . . . . . . . . . 12
4 Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Bottom Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.5 Thermal Block Assembly . . . . . . . . . . . . . . . . . . . . . . 21
4.5.1 Thermal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.2 Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.3 Basket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.4 Thermal Shunt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5.5 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.5.6 Temperature Control Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.6 Mini Fixed-point Cells . . . . . . . . . . . . . . . . . . . . . . . 22
4.7 Comparison Blocks . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.7.1 Block Well Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
i
4.7.2 Comparison Block Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.7.2.1 Comparison Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.7.2.2 Thermal Shunt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.7.2.3 Top Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 Controller Operation . . . . . . . . . . . . . . . . . . . . . . . 27
5.1 Well Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2 Reset Cut-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.3 Temperature Set-point . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3.1 Programmable Set-points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.3.2 Set-point Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4 Temperature Scale Units . . . . . . . . . . . . . . . . . . . . . . 30
5.5 Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5.1 Scan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.5.2 Scan Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.6 Program Advance . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.7 Temperature Scale Units . . . . . . . . . . . . . . . . . . . . . . 32
5.8 Secondary Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.9 Heater Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.10 Set-point Resistance . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.11 Proportional Band . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.12 Controller Configuration . . . . . . . . . . . . . . . . . . . . . . 34
5.13 Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . 34
5.13.1 High Limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.13.2 Soft Cut-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.13.3 Cut-out Reset Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.14 Program Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.14.1 Fixed-point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.14.2 Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.14.3 Curve Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.15 Serial Interface Parameters . . . . . . . . . . . . . . . . . . . . . 38
5.15.1 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.15.2 Sample Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.15.3 Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.15.4 Linefeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.16 Calibration Parameters . . . . . . . . . . . . . . . . . . . . . . . 39
5.16.1 Hard Cut-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.16.2 R0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.16.3 ALPHA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.16.4 DELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.16.5 Top and Bottom Zone Percent Heating . . . . . . . . . . . . . . . . . . . . . 40
5.16.5.1 Bottom Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.16.5.2 Top Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6 Digital Communication Interface . . . . . . . . . . . . . . . . 43
ii
6.1 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . 43
6.1.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.1.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.1.2.1 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1.2.2 Sample Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1.2.3 Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1.2.4 Linefeed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1.3 Serial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2 Interface Commands . . . . . . . . . . . . . . . . . . . . . . . . 45
7 Fixed-Point Realization . . . . . . . . . . . . . . . . . . . . . 49
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.2 Installing a Sealed Cell into the Basket . . . . . . . . . . . . . . . 49
7.3 Melting Point Realization . . . . . . . . . . . . . . . . . . . . . . 51
7.3.1 Melting Point Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.3.1.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3.1.2 Setting Up The Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3.1.3 Program Initiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.4 Freezing Point Realization . . . . . . . . . . . . . . . . . . . . . 54
7.4.1 Freezing Point Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4.1.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.4.1.2 Setting Up The Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.4.1.3 Program Initiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.5 Test Probe Calibration . . . . . . . . . . . . . . . . . . . . . . . . 57
7.5.1 Calibrating a Single Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.5.2 Furnace Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.5.2.1 Stabilization and Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8 Furnace Calibration . . . . . . . . . . . . . . . . . . . . . . . 61
8.1 Temperature Profile Adjustment . . . . . . . . . . . . . . . . . . 61
8.1.1 Step 1: Measure the profile . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.1.2 Step 2: Adjust the end zones . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.1.3 Repeat Step 1 and Step 2 if necessary . . . . . . . . . . . . . . . . . . . . . 62
8.2 Temperature Calibration. . . . . . . . . . . . . . . . . . . . . . . 62
8.2.1 One-point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2.2 Three-point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2.3 Compute DELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.2.4 Computer R0 and Alpha . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.2.5 Accuracy and Repeatability. . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.1.1 Incorrect Temperature Reading . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.1.2 The unit will not heat or heats at half rate . . . . . . . . . . . . . . . . . . . 69
10.1.3 The unit heats slowly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.1.4 If the display flashes any of the following:. . . . . . . . . . . . . . . . . . . 69
iii
10.1.5 If the display flashes any of the following:. . . . . . . . . . . . . . . . . . . 70
10.1.6 If the display flashes any of the following:. . . . . . . . . . . . . . . . . . . 70
10.2 CE Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.2.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.2.2 Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
iv
v
Figures and Tables
Table 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . 2
Table 2 9260 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3 Mini Cell Specifications . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 1 Bottom Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 2 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 3 Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 4 Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 5 Thermal Block Assembly . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 6 Typical Sealed Mini Fixed-Point Cell. . . . . . . . . . . . . . . . . 23
Figure 7 Comparison Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 8 Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 9 Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 4 Communications Command Summary . . . . . . . . . . . . . . . . 46
Table 4 Communications Command Summary cont. . . . . . . . . . . . . . 47
Figure 10 Melting Point Realization. . . . . . . . . . . . . . . . . . . . . . . 52
Figure 11 Freezing Point Realization . . . . . . . . . . . . . . . . . . . . . . 55
Figure 12 9260 Comparison Block Heating Up. . . . . . . . . . . . . . . . . 59
Figure 13 9260 Comparison Block Cool Down . . . . . . . . . . . . . . . . . 59
1 Before You Start
1.1 Introduction
The 9260 is a specialized furnace for the realization of certain defining
fixed-points of the International Temperature Scale of 1990 (ITS-90). This fur-
nace is intended for Calibration Laboratory use and not for field applications.
The 9260 permits simplified realization of either freezing or melting curves. In-
ternal programming of the micro-processor controller provides preprogrammed
scan rates, set-points for each step in the process, dwell timing, and indication
that the next step is ready. ITS-90 points including Indium, Tin, Zinc, and Alu-
minum are included. In addition, one other user-defined point may be selected.
User defined non-ITS 90 fixed-points are useful for specific applications.
The 9260 furnace is available in 115 VAC (±10%) 60 Hz or 230 VAC(±10%)
50 Hz models.
The 9260 furnace may also be used as a dry-well calibrator or as a temperature
comparator. Pre-drilled inserts are available from Hart Scientific for this
application.
Built in programmable features include:
•Temperature scan rate control
•Fixed-point programming
•Eight set-point memory
•Adjustable readout in °C or °F
The temperature is accurately controlled by Hart’s hybrid analog/digital con-
troller. The controller uses a precision, platinum RTD as a sensor and controls
the well temperature with a solid state relay (triac) driven heater.
The LED front display panel continuously shows the current well temperature.
The temperature may be easily set with the control buttons to any desired tem-
perature within the specified range. The furnace’s multiple fault protection de-
vices insure user and instrument safety and protection.
The 9260 furnace was designed for high accuracy calibrations using compari-
son measurements or fixed-point calibration methods and for ease of operation.
Through proper use, the instrument will continuously provide accurate calibra-
tion of temperature sensors and devices. The user should be familiar with the
safety guidelines and operating procedures of the furnace as described in this
user manual.
1
1 Before You Start
Introduction
1.2 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.
Symbol Description
AC (Alternating Current)
AC-DC
Battery
CE Complies with European Union Directives
DC
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
On
Canadian Standards Association
9260 Mini Fixed Point Cell Furnace
User’s Guide
2
Table 1 International Electrical Symbols
Symbol Description
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
1.3 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 in-
strument being used.
1.3.1 WARNINGS
To avoid personal injury, follow these guidelines.
•DO NOT operate this unit without a properly grounded, properly polar-
ized power cord.
•DO NOT connect this unit to a non-grounded, non-polarized outlet.
•DO USE a ground fault interrupt device.
•HIGH VOLTAGE is used in the operation of this equipment. SEVERE
INJURY OR DEATH may result if personnel fail to observe safety pre-
cautions. Before working inside the equipment, turn power off and dis-
connect power cord.
•HIGH TEMPERATURES PRESENT in this equipment FIRES AND
SEVERE BURNS may result if personnel fail to observe safety precau-
tions.
•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 peri-
ods of time requires caution. Completely UNATTENDED HIGH TEM-
PERATURE OPERATION IS NOT RECOMMENDED.
•Components and heater lifetimes can be shortened by continuous high
temperature operation.
•The instrument can generate extreme temperatures. Precautions must be
taken to prevent personal injury or damage to objects. Probes may be ex-
tremely hot when removed from the instrument. Cautiously handle probes
3
1 Before You Start
Safety Information
to prevent personal injury. Always use the special comparison block tongs
that are supplied with the furnace to remove the comparison block or cell
basket. Carefully place probes on a heat resistant surface or rack until
they are at room temperature. Never place any objects other than the com-
parison blocks, cell basket, or cells supplied with the furnace into the
well.
•Use only grounded AC mains supply of the appropriate voltage to power
the instrument. The furnace requires 11 amps maximum at 115 VAC
(±10%),60 Hz and 6 amps maximum at 230VAC (±10%), 50 Hz.
•Follow all safety guidelines listed in the user’s manual.
•Calibration Equipment should only be used by Trained Personnel.
1.3.2 CAUTIONS
To avoid possible damage to the instrument, follow these guidelines.
•Operate the instrument in room temperatures between 5-45°C (41-113°F).
Allow sufficient air circulation by leaving at least 6 inches of space be-
tween the furnace and nearby objects. Overhead clearance needs to allow
for safe and easy insertion and removal of probes for calibration.
•The furnace is a precision instrument. Although it has been designed for
optimum durability and trouble free operation, it must be handled with
care. Always carry the unit in an upright position to prevent the compari-
son blocks from falling out. Keep the well of the instrument clean and
clear of any foreign matter. Do not operate near flammable materials.
•DO NOT use fluids to clean out the well.
•DO NOT move the furnace with the fixed-point cells inside. They can be
easily broken.
•Before initial use, after transport, and anytime the instrument has not been
energized for more than 7 days, the instrument needs to be energized for a
“dry-out” period of 1-2 hours before it can be assumed to meet all of the
safety requirements of the IEC 1010-1.
•The instrument is equipped with operator accessible system fuses. If a
fuse blows, it may be due to a power surge or failure of a component. Re-
place the fuse once. If the fuse blows a second time, it is likely caused by
failure of a component. If this occurs, contact an Authorized Service
Center. Always replace the fuse with one of the same rating, voltage, and
type. Never replace the fuse with one of a higher current rating.
•If a main supply power fluctuation occurs, immediately turn off the in-
strument. Power bumps from brown-outs and black-outs can damage the
instrument. Wait until the power has stabilized before re-energizing the
instrument.
9260 Mini Fixed Point Cell Furnace
User’s Guide
4
1.4 Hart Scientific Authorized Service Centers
Please contact one of the following authorized Service Centers to coordinate
service on your Hart product:
Hart Scientific, Inc.
799 E. Utah Valley Drive
American Fork, UT 84003-9775
USA
Phone: +1.801.763.1600
Telefax: +1.801.763.1010
E-mail: [email protected]
Fluke Nederland B.V.
Customer Support Services
Science Park Eindhoven 5108
5692 EC Son
NETHERLANDS
Phone: +31-402-675300
Telefax: +31-402-675321
E-mail: [email protected]
Fluke Int'l Corporation
Service Center - Instrimpex
Room 2301 Sciteck Tower
22 Jianguomenwai Dajie
Chao Yang District
Beijing 100004, PRC
CHINA
Phone: +86-10-6-512-3436
Telefax: +86-10-6-512-3437
E-mail: [email protected]
Fluke South East Asia Pte Ltd.
Fluke ASEAN Regional Office
Service Center
5
1 Before You Start
Hart Scientific Authorized Service Centers
60 Alexandra Terrace #03-16
The Comtech (Lobby D)
118502
SINGAPORE
Phone: +65 6799-5588
Telefax: +65 6799-5588
E-mail: [email protected]
When contacting these Service Centers for support, please have the following
information available:
•Model Number
•Serial Number
•Voltage
•Complete description of the problem
9260 Mini Fixed Point Cell Furnace
User’s Guide
6
2 Specifications and Environmental
Conditions
2.1 Specifications
The 9260 specifications are detailed in Table 2 and the Mini Cell specifications
are detailed in Table 3.
7
2 Specifications and Environmental Conditions
Specifications
Operating Range 50°C to 680°C (122°F to 1256°F)
Ambient Temperature 5°C to 45°C (41°F to 113°F)
Accuracy ±0.2°C 50°C to 300°C
±0.3°C 300°C to 450°C
±0.5°C 450°C to 680°C
Stability ± 0.03°C to 300°C
± 0.05°C above 300°C
Well-to-Well Gradient ±0.02°C (±0.036°F)
Melting/Freezing Point Duration 6 to 10 hours typical
Vertical Gradients Top and bottom zones adjustable by offset
Resolution 0.01°C or °F
Display Scale °C or °F, switchable
Comparison Block Blank block, two multi-hole blocks, and custom blocks available
Fault Protection Sensor burnout and short protection, over temperature thermal
cut-out
Heater 1200 W maximum - adjustable top and bottom zones
Heating Time Approximately 1.25 hours, 25°C to 680°C
Cooling Time Approximately 10.5 hours, 680°C to 100°C
Stabilization Time 15 minutes nominal
Immersion Depth 229 mm (9”)
Power Requirements 115 VAC (±10%), 60 Hz, 11 amps maximum, 10 amps nominal
230 VAC (±10%), 50 Hz, 6 amps maximum, 5 amps nominal
Exterior Dimensions 250 mm L x 203 mm W x 489 mm H
(10” x 8” x 19.25”)
Weight 20.5 kg with comparison block
(45 lb)
Table 2 9260 Specifications
2.2 Environmental Conditions
Although the instrument has been designed for optimum durability and trou-
ble-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 - 45°C (41 - 113°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
2.3 Warranty
Fluke Corporation, Hart Scientific Division (Hart) warrants this product to be
free from defects in material and workmanship under normal use and service
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-
9260 Mini Fixed Point Cell Furnace
User’s Guide
8
Expanded Uncertainty – Using
9260 Furnace
Model Fixed Point Temperature Six 9’s Cell Five 9’s Cell
5914 Indium 156.5985°C 2 mK 5 mK
5915 Tin 231.928°C 3 mK 5 mK
5916 Zinc 419.527°C 4 mK 7 mK
5917 Aluminum 660.323°C 10 mK 12 mK
Table 3 Mini Cell Specifications
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 an Authorized Service Center for authorization. Service Centers as-
sume NO risk for in-transit damage.
For service or assistance, please contact an Authorized Service Center.
Hart Scientific, Inc.
799 East Utah Valley Drive
American Fork, UT 84003-9775
Phone: (801) 763-1600
Fax: (801) 763-1010
E-mail: [email protected]
THE FOREGOING WARRANTY IS PURCHASER’S SOLE AND EXCLU-
SIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EX-
PRESS 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 DAM-
AGES OR LOSS WHETHER IN CONTRACT, TORT, OR OTHERWISE.
9
2 Specifications and Environmental Conditions
Warranty
3 Quick Start
3.1 Unpacking
Unpack the instrument carefully and inspect it for any damage that may have
occurred during shipment. If there is shipping damage, notify the carrier
immediately.
Verify that the following components are present:
•9260 Furnace
•Inner-Melt Heater
•Power Cord
•Manual
•Comparison Blocks (optional)
•Cell Basket
•Cell Basket Lid
•Basket Removal Tool
•Thermal Shunt
•Top Insulation
•Cell Pad Insulation
3.2 Setup
Place the furnace on a flat surface with at least 6 inches of free space around
and 18 inches above the instrument. Install the power cord into the power entry
module on the underside of the furnace. Plug the power cord into a grounded
mains outlet. Verify that the nominal voltage corresponds to that indicated on
the back of the instrument.
Carefully insert the comparison blocks or cell baskets into the well. (DO NOT
drop them into the well.) Comparison block holes should be of the smallest di-
ameter possible while still allowing the probe to slide in and out easily. Various
hole sizes are available from Hart Scientific. The well must be clear of any for-
eign objects, dirt and grit before the comparison block is inserted. See Section
4.7 for more details.
Turn on the power to the instrument by toggling the switch on the power entry
module located underneath the front of the furnace. The fan should begin qui-
etly blowing air through the instrument and the controller display should illu-
minate after 3 seconds. After a brief self-test the controller should begin normal
operation. If the unit fails to operate please check the power connection.
The display will begin to show the well temperature and the well heater will
start operating to bring the temperature of the well to the set-point temperature.
11
3 Quick Start
Unpacking
3.3 “Dry-out” Period
Before initial use, after transport, and anytime the instrument has not been en-
ergized for more than 10 days, the furnace will need to be energized for a
“dry-out” period of 1–2 hours before it can be assumed to meet all of the safety
requirements of IEC 1010-1.
3.4 Power
Plug the instrument power cord into a mains outlet of the proper voltage, fre-
quency, and current capability. Typically this will be 11 amps maximum at 115
VAC (±10%), 60 Hz [6 amps maximum at 230 VAC (±10%), 50 Hz]. Turn the
instrument on using the “POWER” switch underneath the unit. The instrument
will turn on and begin to heat to the previously programmed temperature
set-point. The front panel LED display will indicate the actual instrument
temperature.
3.5 Setting the Temperature
Section 5.3 explains in detail how to set the temperature set-point on the fur-
nace using the front panel keys. The procedure is summarized here.
(1) Press “SET” twice to access the set-point value.
(2) Press “UP” or “DOWN” to change the set-point value.
(3) Press “SET” to program in the new set-point.
(4) Press “EXIT” to return to the temperature display.
When the set-point temperature is changed the controller will switch the well
heater on or off to raise or lower the temperature. The displayed well tempera-
ture will gradually change until it reaches the set-point temperature. The well
may require 10 to 75 minutes to reach the set-point depending on the span and
the scan rate. Another 15 minutes is required to stabilize within ±0.1°C of the
set-point. Ultimate stability may take 15 to 20 minutes of stabilization time.
3.6 Changing Display Units
The instrument can display temperature in Celsius or Fahrenheit. The instru-
ment is shipped from the factory set to Celsius. To change to Fahrenheit or
back to Celsius there are two ways:
Press “SET” and “UP” simultaneously. This will change the display units.
or
Press the “SET” key three times from the temperature display to show
Un = C Press the “UP” or “DOWN” key to change units.
9260 Mini Fixed Point Cell Furnace
User’s Guide
12
Press “SET” to store changes.
13
3 Quick Start
Changing Display Units
4 Parts and Controls
The user should become familiar with the 9260 furnace parts. Successful use of
the instrument is dependent upon knowledge of important components and
theirproperuse.
4.1 Bottom Panel
The bottom panel consists of the removable power cord inlet, the power entry
module (PEM) and power switch, and the fan. See Figure 1.
1. The removable power cord inlet is located underneath the furnace and
plugs into an IEC grounded socket.
15
4 Parts and Controls
Bottom Panel
Figure 1 Bottom Panel
/