Fluke 7008 User manual

3720817
March 2013
© 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
7008
Calibration Bath
Users Guide
Via Acquanera, 29 22100 Como
tel. 031.526.566 (r.a.) fax 031.507.984
[e-mail] www.calpower.it

LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. Fluke warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
Fluke does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a Fluke authorized service center within the
warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
To register your product online, visit register.fluke.com

i
Table of Contents
Chapter Title Page
1 Before You Start .................................................................................. 1-1
Before You Start.................................................................................... 1-1
1.1 Symbols Used.............................................................................. 1-1
1.2 Safety Information ....................................................................... 1-2
1.2.1 Warnigs ................................................................................ 1-2
1.2.2 Cautions ............................................................................... 1-4
1.3 Authorized Service Centers......................................................... 1-5
2 Introduction ......................................................................................... 2-1
Introduction............................................................................................ 2-1
3 Specifications and Environmental Conditions ................................. 3-1
Specifications and Environmental Conditions ....................................... 3-1
3.1 Specifications............................................................................... 3-1
3.2 Environmental Conditions............................................................ 3-1
4 Quick Start ........................................................................................... 4-1
Quick Start............................................................................................. 4-1
4.1 Unpacking.................................................................................... 4-1
4.2 Set Up.......................................................................................... 4-1
4.3 Power........................................................................................... 4-2
4.4 Setting the Temperature .............................................................. 4-2
5 Installation ........................................................................................... 5-1
Installation ............................................................................................. 5-1
5.1 Bath Environment ........................................................................ 5-1
5.2 “Dry-out” Period ........................................................................... 5-1
5.3 Bath Preparation and Filling ........................................................ 5-2
5.4 Probe ........................................................................................... 5-2
5.5 Power........................................................................................... 5-2

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Users Guide
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6 Bath Use............................................................................................... 6-1
Bath Use................................................................................................ 6-1
6.1 General ........................................................................................ 6-1
6.2 Comparison Calibration ............................................................... 6-1
6.3 Calibration of Multiple Probes...................................................... 6-2
7 Parts and Controls .............................................................................. 7-1
Parts and Controls................................................................................. 7-1
7.1 Front Control Panel...................................................................... 7-1
7.2 Side Panel ................................................................................... 7-2
7.3 Back Panel................................................................................... 7-3
7.4 Lid................................................................................................ 7-5
8 General Operation ............................................................................... 8-1
General Operation................................................................................. 8-1
8.1 Heat Transfer Fluid ...................................................................... 8-1
8.1.1 Temperature Range.............................................................. 8-1
8.1.2 Viscosity................................................................................ 8-1
8.1.3 Specific Heat......................................................................... 8-1
8.1.4 Thermal Conductivity ............................................................ 8-2
8.1.5 Thermal Expansion............................................................... 8-2
8.1.6 Electrical Resistivity .............................................................. 8-2
8.1.7 Fluid Lifetime ........................................................................ 8-2
8.1.8 Safety.................................................................................... 8-2
8.1.9 Cost ...................................................................................... 8-3
8.1.10 Commonly Used Fluids....................................................... 8-3
8.1.11 Fluid Characteristics Chart ................................................. 8-4
8.2 Stirring ......................................................................................... 8-7
8.3 Power........................................................................................... 8-7
8.4 Heater.......................................................................................... 8-7
8.5 Cooling......................................................................................... 8-7
8.6 Temperature Controller................................................................ 8-8
9 Controller Operation ........................................................................... 9-1
Controller Operation .............................................................................. 9-1
9.1 Bath Temperature........................................................................ 9-1
9.2 Reset Cut-out............................................................................... 9-1
9.3 Temperature Set-point................................................................. 9-3
9.3.1 Programmable Set-points ..................................................... 9-3
9.3.2 Set-point Value ..................................................................... 9-4
9.3.3 Set-point Vernier................................................................... 9-4
9.4 Temperature Scale Units ............................................................. 9-5
9.5 Secondary Menu.......................................................................... 9-6
9.6 Heater Power............................................................................... 9-6
9.7 Proportional Band ........................................................................ 9-6
9.8 Cut-out ......................................................................................... 9-9
9.9 Controller Configuration............................................................... 9-10
9.10 Probe Parameters Menu............................................................ 9-10
9.10.1 DO ...................................................................................... 9-10
9.10.2 DG ...................................................................................... 9-10
9.11 Operating Parameters ............................................................... 9-10
9.11.1 Cut-out Reset Mode............................................................ 9-11
9.12 Serial Interface Parameters ....................................................... 9-11

Contents (continued)
iii
9.12.1 Baud Rate........................................................................... 9-11
9.12.2 Sample Period .................................................................... 9-12
9.12.3 Duplex Mode....................................................................... 9-12
9.12.4 Linefeed .............................................................................. 9-13
9.13 IEEE-488 Parameters Menu...................................................... 9-13
9.13.1 IEEE-488 Address .............................................................. 9-13
9.14 Calibration Parameters .............................................................. 9-14
9.14.1 CTO .................................................................................... 9-14
9.14.2 H and L ............................................................................... 9-14
10 Digital Communication Interface ....................................................... 10-1
Digital Communication Interface............................................................ 10-1
10.1 Serial Communications.............................................................. 10-1
10.1.1 Wiring.................................................................................. 10-2
10.1.2 Setup .................................................................................. 10-2
10.1.2.1 Baud Rate........................................................................ 10-2
10.1.3 Serial Operation.................................................................. 10-3
10.2 IEEE-488 Communication (optional) ......................................... 10-3
10.2.1 Setup .................................................................................. 10-3
10.2.1.1 IEEE-488 Interface Address ............................................ 10-6
10.2.2 IEEE-488 Operation............................................................ 10-6
10.3 Interface Commands ................................................................. 10-6
10.4 Power Control Functions ........................................................... 10-7
10.4.1 Heater Control .................................................................... 10-7
10.4.2 Cooling Control ................................................................... 10-7
11 Calibration Procedure......................................................................... 11-1
Calibration Procedure............................................................................ 11-1
11.1 Calibration Points....................................................................... 11-1
11.2 Measuring the Set-point Error.................................................... 11-1
11.3 Computing DOand DG................................................................ 11-2
11.4 Calibration Example................................................................... 11-2
12 Maintenance......................................................................................... 12-1
Maintenance.......................................................................................... 12-1
13 Troubleshooting .................................................................................. 13-1
Troubleshooting..................................................................................... 13-1
13.1 Troubleshooting......................................................................... 13-1
13.2 Comments ................................................................................. 13-6
13.2.1 EMC Directive..................................................................... 13-6
13.2.2 Low Voltage Directive (Safety) ........................................... 13-6

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Users Guide
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v
List of Tables
Table Title Page
1. International Electrical Symbols ................................................................ 1-1
2. Specifications ............................................................................................ 3-1
3. Table of Various Fluid Characteristics....................................................... 8-5
4. Proportional Band — Fluid Table .............................................................. 9-8
5. Interface Command Summary .................................................................. 10-4
6. Serial Power Control Functions................................................................. 10-8
7. Temperature Range Control Functions ..................................................... 10-8

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Users Guide
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vii
List of Figures
Figure Title Page
1. Bath Assembly .......................................................................................... 2-1
2. Front Panel................................................................................................ 7-1
3. Refrigeration Controls - Side Panel........................................................... 7-2
4. Back Panel ................................................................................................ 7-4
5. Lid Options and Drain View....................................................................... 7-5
6. Chart of Various Fluid Characteristics....................................................... 8-6
7. Controller Operation Flowchart ................................................................. 9-2
8. Bath temperature fluctuation at various proportional band settings .......... 9-7
9. Serial cable wiring ..................................................................................... 10-2
10. Sample calibration computations .............................................................. 11-3

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Users Guide
viii

1-1
Chapter 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.
Table 1. International Electrical Symbols
Symbol Description
 AC (Alternating Current)
AC-DC
Battery
Complies with European Union directives
DC
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
O Off
I On

7008
Users Guide
1-2
Canadian Standards Association
CATII
OVERVOLTAGE (Installation) CATEGORY II, Pollution
Degree 2 per IEC1010-1 refers 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. Refer to the safety information in
Warnings and Cautions sections.
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
WARNINGS
To avoid possible electrical shock or personal injury, follow
these guidelines.
GENERAL
•DO NOT use the instrument for any application other than
calibration work. The instrument was designed for temperature
calibration. Any other use of the instrument may cause
unknown hazards to the user.
•DO NOT use the instrument in environments other than those
listed in the user’s guide.
•DO NOT overfill the bath. Overflowing extremely cold or hot
fluid may be harmful to the operator. See Section 5.3, Bath
Preparation and Filling, for specific instructions.
•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.

Before You Start
1.2 Safety Information 1
1-3
•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.
•DO NOT operate high temperature baths (500 °C) near
flammable materials. Extreme temperatures could ignite the
flammable material.
•Overhead clearance is required. Do not place the instrument
under a cabinet or other structure. Always leave enough
clearance to allow for safe and easy insertion and removal of
probes.
•The instrument is intended for indoor use only.
•The bath is a precision instrument. Although it has been
designed for optimum durability and trouble free operation, it
must be handled with care. Position the bath before the tank is
filled with fluid by rolling it into place. DO NOT attempt to lift
the bath. Due to the weight of the compressor, it may require
two people to safely move the bath. The area containing the
compressor will be heavier than the rest of the bath. DO NOT
move a bath filled with fluid.
BURN HAZARD
•Extremely cold temperatures may be present in this
equipment. Freezer burns and frostbite may result if personnel
fail to observe safety precautions.
•High temperatures may be present in this equipment. Fires
and severe burns may result if personnel fail to observe safety
precautions.
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 115 VAC, 60Hz (230 VAC,
50Hz optional), and AC 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 local codes and ordinances. Consult a qualified
electrician. DO NOT use an extension cord or adapter plug.
•DO use a ground fault interrupt device. This instrument
contains a fluid. A ground fault device is advised in case fluid
is present in the electrical system and could cause an
electrical shock.
•Always replace the power cord with an approved cord of the
correct rating and type. If you have questions, contact an
Authorized Service Center (see Section 1.3).

7008
Users Guide
1-4
•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.
BATH FLUIDS
•Fluids used in this bath may produce noxious or toxic fumes
under certain circumstances. Consult the fluid manufacturer’s
MSDS (Material Safety Data Sheet). Proper ventilation and
safety precautions must be observed.
•The instrument is equipped with a soft cutout (user settable
firmware) and a hard cutout (set at the factory). Check the
flash point, boiling point, or other fluid characteristic
applicable to the circumstances of the bath operation. Ensure
that the soft cutout is adjusted to the fluid characteristics of
the application. As a guideline, the soft cutout should be set
10 °C to 15 °C below the flash point of the bath fluid. See
Section 8.1, Heat Transfer Fluid, for specific information on
bath fluids and Section 9.8, Cutout.
1.2.2 Cautions
CAUTIONS
•Always operate this instrument at room temperature between
41 °F and 122 °F (5 °C to 50 °C). Allow sufficient air circulation
by leaving at least 6 inches (15 cm) of clearance around the
instrument.
•DO NOT overfill the bath. Overflowing fluid may damage the
electrical system. See Section 5.3, Bath Preparation and
Filling, for specific instructions.
•Read Section 6, Bath Use, before placing the bath into service.
•DO NOT change the values of the bath calibration constants
from the factory set values. The correct setting of these
parameters is important to the safety and proper operation of
the bath.
•The refrigeration may be damaged or the lifetime shortened if
the set-point temperature is set above 60 °C for more than one
hour with the refrigeration manually on. Ensure that the
refrigeration is off when the bath is used above 60 °C.
•The Factory Reset Sequence should be performed only by
authorized personnel if no other action is successful in
correcting a malfunction. You must have a copy of the most
recent Report of Test to restore the test parameters.
•DO NOT operate this instrument in an excessively wet, oily,
dusty, or dirty environment.

Before You Start
1.3 Authorized Service Centers 1
1-5
•Most probes have handle temperature limits. Be sure that the
probe handle temperature limit is not exceeded in the air
above the instrument.
•The instrument and any thermometer probes used with it are
sensitive instruments that can be easily damaged. Always
handle these devices with care. Do not allow them to be
dropped, struck, stressed, or overheated.
COLD BATHS
•Refrigerated baths require that the condensing coil be cleaned
periodically. Accumulation of dust and dirt on the condenser
will result in premature failure of the compressor.
•This bath has been equipped with a brownout and over voltage
protection device as a safety feature to protect the system
components.
•Mode of Operation: This bath needs to be plugged into the line
voltage for at least 2 minutes before operation. This is only
necessary for the first time the bath is energized or when it is
moved from one location to another. Turning the bath ON or
OFF does not trigger the delay.
•If a High/Low voltage condition exists for longer than 5
seconds, the bath de-energizes. An amber indicator on the
back panel lights when this condition exists.
•Re-energization is automatic upon correction of the fault
condition and after a delay cycle of about 2 minutes. If a fault
condition exists upon application of power, the bath will not
energize.
•Under and Over Voltage Protection at 115 VAC
•Voltage Cutout: ±12.5 %(101 −129 VAC)
•Voltage Cut In: ±7.5 %(106 −124 VAC)
•Under and Over Voltage Protection at 230 VAC
•Voltage Cutout: ±12.5 %(203 −257 VAC)
•Voltage Cut In: ±7.5 %(213 −247 VAC)
1.3 Authorized Service Centers
Please contact one of the following authorized Service Centers to coordinate
service on your Hart product:
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: [email protected]
Fluke Nederland B.V.
Customer Support Services
Science Park Eindhoven 5108
5692 EC Son

7008
Users Guide
1-6
NETHERLANDS
Phone: [phone]
Telefax: [phone]
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: [phone]
Telefax: [phone]
E-mail: [email protected]
Fluke South East Asia Pte Ltd.
Fluke ASEAN Regional Office
Service Center
60 Alexandra Terrace #03-16
The Comtech (Lobby D)
118502
SINGAPORE
Phone: [phone]
Telefax: [phone]
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

2-1
Chapter 2
Introduction
The Hart Scientific 7008 is a very precise constant temperature bath. An
innovative state of the art solid-state temperature controller has been
incorporated which maintains the bath temperature with extreme stability. The
controller uses a microcontroller to execute the many operating functions.
User interface is provided by the 8-digit LED display and four key-switches.
Digital remote communications is optionally available with a RS-232 or IEEE-488
interface.
The tank for the 7008 is stainless steel. The 7008 holds 44 liters. There are two
lids available the standard lid with a rectangular access hole and an optional lid
with a recirculation pump (see Figure 5).

7008
Users Guide
2-2
Figure 1. Bath Assembly

3-1
Chapter 3
Specifications and Environmental
Conditions
3.1 Specifications
Table 2. Specifications
Temperature range −5 °C to 110 °C
Temperature set ability ±0.002 °C
Temperature reset ability ±0.002 °C
Accuracy ±1.0 °C
Stability ±0.0007 °C at 25 °C (water)
0.001 °C at 25 °C (mineral oil)
Tank capacity 42 liters (11.2 gal)
Access opening 323.9 mm x 184.2 mm (12.75 in x 7.25 in)
Cooling capacity 100-200 watt
Refrigeration 1/5 Hp
Heaters 500 and 1000 watt
Power 115 V AC ( ±10 %), 60 Hz, 15 A, 1290 W
230 V AC ( ±10 %), 50 Hz, 8 A, 1290 W (optional)
230 V AC ( ±10 %), 60 Hz, 8 A, 1400 W (optional)
NOTE: If voltage is outside the ±10 %, the compressor may be
damaged. 230 V models are frequency specific.
System fuse 115 V: 15 A 250 V SB
230 V: 8 A 250 V SB
Heater fuse 115 V: 10 A 250 V FB
230 V: 6 A 250 V FB
Exterior dimensions 77.5 cm W x 61 cm H x 48.3 cm D
(30.5 in x 24 in x 19 in)
Shipping weight 61 kg (135 lb.)
Safety OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per
IEC1010-1

7008
Users Guide
3-2
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 cleaning
recommendations can be found in the Maintenance Section of this manual.
The instrument operates safely under the following conditions:
•temperature range: 5 to 50 °C (41 to 122 °F)
•ambient relative humidity: maximum 80% for temperature <31 °C,
decreasing linearly to 50 %at 40 °C
•pressure: 75kPa - 106kPa
•mains voltage within ±10 %of nominal
•vibrations in the calibration environment should be minimized
•altitude does not affect the performance or safety of the unit