Fluke 6055 User manual

6055
Calibration Bath
User’s Guide
October 2013
© 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
Via Acquanera, 29 22100 Como
tel. 031.526.566 (r.a.) fax 031.507.984
[e-mail] www.calpower.it

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 6
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Specifications and environmental conditions . . . . . . . . . . 11
3.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . 11
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Comments concerning the use of salt . . . . . . . . . . . . . . . . 14
4.3 Bath environment . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 “Dry-out” period . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.5 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.6 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.7 Setting the temperature . . . . . . . . . . . . . . . . . . . . . . . 15
5 Bath Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Comparison calibration . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Calibration of multiple probes. . . . . . . . . . . . . . . . . . . . 18
6 Parts and controls . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Controller panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Power panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3 Back panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7 General operation . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1 Two modes of temperature control . . . . . . . . . . . . . . . . . 23
7.1.1 Temperature control mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1.2 Temperature drift mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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7.2 Bath fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 Fluid system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.4 Fluid Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.5 Filling the bath . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.5.1 Using heat transfer salt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.5.1.1 The first salt load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.5.1.2 Melting the salt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.6 Stirring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.7 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Controller operation . . . . . . . . . . . . . . . . . . . . . . . 29
8.1 Bath temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2 Reset cut-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.3 Temperature set-point . . . . . . . . . . . . . . . . . . . . . . . . 31
8.3.1 Programmable set-points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.3.2 Set-point value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.3.3 Set-point vernier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.4 Temperature scale units . . . . . . . . . . . . . . . . . . . . . . . 33
8.5 Secondary menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.6 Heater power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.7 Proportional band . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.8 Cut-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.9 Controller configuration. . . . . . . . . . . . . . . . . . . . . . . 37
8.10 Probe parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.10.1 R0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.10.2 ALPHA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.11 Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . 38
8.11.1 Cut-out reset mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.11.2 Stir mode select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.11.3 Stir set-point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.11.4 Heat up power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.12 Serial interface parameters . . . . . . . . . . . . . . . . . . . . . 40
8.12.1 Baud rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.12.2 Sample period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.12.3 Duplex mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.12.4 Linefeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.13 IEEE-488 parameters . . . . . . . . . . . . . . . . . . . . . . . . 42
8.13.1 IEEE-488 address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.14 Calibration parameters . . . . . . . . . . . . . . . . . . . . . . . 42
8.14.1 CTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.14.2 CO and CG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.14.3 H and L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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9 Digital communication interface . . . . . . . . . . . . . . . . 45
9.1 Serial communications . . . . . . . . . . . . . . . . . . . . . . . 45
9.1.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.1.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.1.2.1 Baud rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.1.2.2 Sample period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.1.2.3 Duplex mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.1.2.4 Linefeed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.1.3 Serial operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.2 IEEE-488 communication (optional) . . . . . . . . . . . . . . . . 47
9.2.1 Setup and address selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.2.2 IEEE-488 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.3 Interface commands . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.4 Power commands . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.5 Heater settings for control . . . . . . . . . . . . . . . . . . . . . . 52
10 Calibration procedure . . . . . . . . . . . . . . . . . . . . . . 53
10.1 Calibration points . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2 Measuring the set-point error . . . . . . . . . . . . . . . . . . . . 53
10.3 Computing R0 and ALPHA . . . . . . . . . . . . . . . . . . . . . 53
10.4 Calibration example . . . . . . . . . . . . . . . . . . . . . . . . . 54
11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
12 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.2 Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
12.2.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
12.2.2 Low Voltage Directive (Safety) . . . . . . . . . . . . . . . . . . . . . . . . . 61
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iv
Figures and Tables
Figure 1 Controller panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 2 Power panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 3 Back panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 4 System diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 5 System diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 6 Controller operation flowchart . . . . . . . . . . . . . . . . . . . . . . 30
Figure 7 Bath temperature fluctuations at various proportional band settings . . 35
Figure 8 Serial Cable Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . 45
Table 1 Interface command summary . . . . . . . . . . . . . . . . . . . . . . 48
Table 1 Interface command summary cont. . . . . . . . . . . . . . . . . . . . 49
Table 1 Interface command summary cont. . . . . . . . . . . . . . . . . . . . 50
Table 2 Power Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 9 Calibration example . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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.
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
1
1 Before you start
Symbols used
Table 1 International Electrical Symbols

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
1.2 Safety information
DISCLAIMER: Fluke Corporation, Hart Scientific Division manufac-
tures baths for the purpose of temperature calibration. Baths used for ap-
plications other than calibration are used at the discretion and sole
responsibility of the customer. Hart Scientific cannot accept any responsi-
bility for the use of baths for any application other than temperature cali-
bration.
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 instru-
ment being used.
1.2.1 Warnings
To avoid personal injury, follow these guidelines.
GENERAL
•Appropriate personal safety protection should be worn by the operator at
all times while using the bath.
•Hart Scientific does not recommend that user’s drain the salt from the
bath. Hart Scientific provides the service of draining salt from the bath. If
draining the bath salt is necessary, contact an Authorized Service Center
(see Section 1.3) for an RMA and instructions on returning the bath. In-
sure that the control probe is removed from the bath before the salt solidi-
fies. Solidification in the bath can take up to several days. If the control
probe is not removed before shipping the bath, the control probe may be
damaged during shipping and the Service Centers assume no liability for
damage incurred during shipping.
6055 Calibration Bath
User’s Guide
2

•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.
•DO NOT overfill the bath. Overflowing extremely hot fluid may be harm-
ful to the operator. See Section 7.5, Filling the bath, for specific instruc-
tions.
•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 initial use, or after transport, or after storage in humid or semi-hu-
mid 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 re-
quirements 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 apply-
ing power such as storage in a low humidity temperature chamber operat-
ing at 50°C for 4 hours or more.
•DO NOT operate high temperature baths (500°C) near flammable materi-
als. Extreme temperatures could ignite the flammable material.
•Overhead clearance is required. Do not place the instrument under a cabi-
net 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.
•Ensure that you check the appropriate OSHA and local fire code regula-
tions for proper equipment required to suppress a fire for the Salt utilized
in the bath.
BURN HAZARD
•High temperatures may be present in this equipment. Fires and severe
burns may result if personnel fail to observe safety precautions.
•Ensure the bath DOES NOT contain any water and has been completely
dried prior to filling with salt. Any trapped water can cause a steam explo-
sion resulting in personal injury. If the bath has recently been filled with
water, ensure the inside of the drain tube is dry prior to filling the bath
with salt.
•When immersing any object in the bath, ensure that you are not introduc-
ing anything into the bath that will react with the bath salt. Ensure that
probes are DRY and free of contaminants. Read the MSDS (Material
Safety Data Sheet) for the salt used. If you are still unsure if the material
you are going to introduce into the bath will react with the salt, refer to
3
1 Before you start
Safety information

the individual MSDS sheets for the three components that make up the
salt.
•The bath is provided with an access cover. The cover should remain on
the bath whenever possible. Operating the bath without the access cover
reduces stability, increases out gassing of fluids, and increases the possi-
bility of personal injury or fire hazard.
•When removing probes from the bath DO NOT wipe probes down with a
paper towel. If the bath setpoint is high, the salt can cause the paper towel
to ignite in your hand. Provide a safe surface and situation for the probes
to cool prior to cleaning the salt from the probes.
•The bath generates extreme temperatures. Precautions must be taken to
prevent personal injury or damage to objects. Probes may be extremely
hot when removed from the bath. Cautiously handle probes to prevent
personal injury. Carefully place probes on a heat resistant surface or rack
until they are at room temperature.
•Be extremely careful when filling the bath with salt and bringing it up to
temperature. Salt expands with temperature. It is easy to add salt, but ex-
tremely dangerous to remove hot molten salt because the bath is over
filled. DO NOT fill the bath above the indicated fill line when the stirring
is on. It will overflow.
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 an outlet as stated in the specifications of this guide. 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 di-
rectly 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 unit contains a liquid. A
ground fault device is advised in case liquid is present in the electrical
system and could cause an electrical shock.
•Always replace the power cord with an approved cord of the correct rat-
ing and type. If you have questions, contact an Authorized Service Center
(see Section 1.3).
•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.
•Keep all combustible materials away from the bath when using salt. Oper-
ate the bath on a heatproof surface such as concrete. Provide a means of
safety for containing any spill, which may occur.
6055 Calibration Bath
User’s Guide
4