53IIB/54IIB
Thermometer
Users Manual
January 2011
© 2011 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
Title
Page
Safety Information .......................................................................................................... 1
Contacting Fluke........................................................................................................ 1
Getting Started............................................................................................................... 4
Components.............................................................................................................. 5
Display Elements....................................................................................................... 6
Buttons ...................................................................................................................... 7
Using the Thermometer.................................................................................................. 9
Changing Setup Options ................................................................................................ 9
Entering and Exiting Setup........................................................................................ 9
Changing the Logging Interval................................................................................... 10
Changing the Thermocouple Type ............................................................................ 11
Changing the Offset................................................................................................... 11
Enabling or Disabling Sleep Mode............................................................................. 12
Setting the Time ........................................................................................................ 12
Changing the Line Frequency ................................................................................... 13
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Users Manual
Measuring Temperatures............................................................................................... 13
Connecting a Thermocouple..................................................................................... 13
Displaying Temperatures.......................................................................................... 14
Holding the Displayed Temperatures........................................................................ 14
Viewing the MIN, MAX, and AVG Readings ............................................................. 14
Using the Offset to Adjust for Probe Errors............................................................... 15
Using Memory ............................................................................................................... 15
Initial Conditions and Data Entries............................................................................ 16
Starting and Stopping Logging.................................................................................. 16
Clearing Memory....................................................................................................... 17
Viewing Logged Readings ........................................................................................ 17
Communicating with a PC ............................................................................................. 18
Maintenance.................................................................................................................. 19
Replacing the Batteries............................................................................................. 19
Cleaning the Case and Holster................................................................................. 19
Calibration................................................................................................................. 19
Specifications ................................................................................................................ 19
Environmental........................................................................................................... 19
80 PK-1 Thermocouple (supplied with thermometer)................................................ 20
Electrical ................................................................................................................... 20
Replacement Parts and Accessories............................................................................. 21
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53IIB/54IIB
Contacting Fluke
Safety Information
To order accessories, receive assistance, or locate the
nearest Fluke distributor or Service Center, call:
The Fluke 53IIB and 54IIB Thermometers (“the
thermometer”) are microprocessor-based, digital
thermometers designed to use external J-, K-, T-, E-, R-,
S-, and N-type thermocouples (temperature probes) as
temperature sensors.
1-888-99-FLUKE (1-888-993-5853) in USA
1-800-36-FLUKE (1-800-363-5853) in Canada
+31-402-678-200 in Europe
+81-3-3434-0181 in Japan
+65-738-5655 in Singapore
+1-425-446-5500 from other countries
Use the thermometer only as specified in this manual.
Otherwise, the protection provided by the meter may be
impaired.
Address correspondence to:
Refer to safety information in Table 1 and the meter
symbols in Table 2.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
USA
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
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Table 1. Safety Information
W Warning
A Warning identifies conditions and actions that pose hazards to the user. To avoid electrical shock or
personal injury, follow these guidelines:
•
Before using the thermometer inspect the case. Do not use the thermometer if it appears damaged.
Look for cracks or missing plastic. Pay particular attention to the insulation around the connectors.
•
•
Disconnect the thermocouple(s) from the thermometer before opening the case.
Replace the batteries as soon as the battery indicator () appears. The possibility of false readings
can lead to personal injury.
•
•
Do not use the thermometer if it operates abnormally. Protection may be impaired. When in doubt,
have the thermometer serviced.
Reflective objects result in lower than actual temperature measurements. These objects pose a burn
hazard.
•
•
Do not operate the thermometer around explosive gas, vapor, or dust.
Do not connect to voltages > 30 V ac rms, 42 V pk, 60 V dc from earth ground.
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53IIB/54IIB
Safety Information
Table 1. Safety Information (cont.)
W Warning (cont.)
•
Model 54: Measurement errors may occur if voltages on the measurement surfaces result in potentials
greater than 1 V between the two thermocouples. When potential differences are anticipated between
the thermocouples, use electrically insulated thermocouples.
•
•
When servicing the thermometer, use only specified replacement parts.
Do not use the thermometer with any part of the case or cover removed.
Caution
A Caution identifies conditions and actions that may damage the meter or the equipment under test.
•
•
•
•
•
Use the proper thermocouples, function, and range for your thermometer.
Do not attempt to recharge the batteries.
To prevent explosion, do not throw batteries into a fire.
Follow local laws or regulations when disposing of batteries.
Match the + and − polarities of the battery with the battery case.
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Table 2. International Symbols
Refer to the manual for information about this feature.
Complies with European Union directives.
W
P
Battery.
Complies with relevant Canadian Standards
Association directives.
M
)
•
•
•
Figure 1 and Table 3 describe the components.
Figure 2 and Table 4 describe the display.
Table 5 describes the functions of the buttons.
Getting Started
Everything in this Users Manual applies both to Models
53 and 54 unless otherwise indicated.
To become familiar with the thermometer, study the
following:
Then read the following sections.
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53IIB/54IIB
Getting Started
Table 3. Components
Components
Thermocouple T1 input
Model 54: Thermocouple T2 input
3
Holster
2
Display
1
4
5
Buttons
Battery door
Batteries
6
7
aat01f.eps
Figure 1. Components
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Table 4. Display Elements
Display Elements
The thermocouple measurement includes an
offset. See "Changing Setup Options."
2
3
4
5
6
7
1
The displayed readings do not change.
A shift function is in progress.
Readings are being logged.
8
Setup is in progress.
9
12
11
Logged readings are displayed.
Low battery. Replace the batteries.
10
Primary Display. Model 53: T1 reading.
Model 54 T1, T2, or T1-T2 reading.
aat02f.eps
Figure 2. Display Elements
The temperature units.
Secondary Display: MAX, MIN, AVG, MEMORY,
or offset. Model 54: T1 or T2 reading.
The thermocouple type.
Time Display: 24-hour clock. Shows the
INTERVAL length in SETUP. Shows elapsed time
when AVG is on or before clock has been set.
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Getting Started
Buttons
Table 5. Buttons
Press to turn the thermometer on or off.
Press , (CANCEL) to stop displaying the minimum, maximum, and average readings in the
secondary display.
(Shift function)
Press , (CLEAR MEMORY) to delete logged readings from memory.
Press , (PC/IR SEND) to toggle the IR port on and off.
Press to turn the backlight on and off. The backlight turns off after 2 minutes without any button
presses. If the battery is low, the backlight is disabled.
Press to step through the maximum, minimum, and average readings.
When viewing logged readings, shows the maximum, minimum, and average of the logged readings.
Press , (CANCEL) to turn off this display.
Press to switch between Celsius (oC), Fahrenheit (oF), and Kelvin (K).
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Table 5. Buttons (cont.)
Press to freeze or unfreeze the displayed readings.
Press when turning on the thermometer to test the display. All display elements appear.
Model 54: Press to toggle showing the T1, T2, and T1-T2 (differential temperature measurement) in
the primary or secondary display.
Press to start or exit Setup. (See "Changing Setup Options.")
Press to scroll to the Setup option you want to change.
Press to increase the displayed setting.
Press to scroll to the Setup option you want to change.
Press to decrease the displayed setting.
Press to enter a Setup option.
Press again to store the displayed setting in memory.
Press to start or stop logging.
During manual logging, the thermometer stores a single set of logged readings in memory each time you
press .
Press to show logged readings and MIN MAX readings on the display.
Press again to stop.
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53IIB/54IIB
Using the Thermometer
Entering and Exiting Setup
Using the Thermometer
When the thermometer is in Setup mode, the display
shows .
1. Plug the thermocouple(s) into the input connector(s).
2. Press to turn on the thermometer.
•
Press to start or exit Setup.
After 1 second the thermometer displays the first reading.
If no thermocouple is plugged into the selected input or the
thermocouple is "open," the display shows:
Notes
Press or to scroll to the setup option you
want to change.
"- - - -."
Setup is disabled in MIN MAX mode.
Changing Setup Options
Use Setup to change the logging interval, thermocouple
type, offset, sleep mode, time, and line frequency settings.
The thermometer stores the settings in its memory. Setup
settings reset only when the batteries are removed for
more than 2 minutes.
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4. If you selected a user-defined logging interval:
Changing the Logging Interval
The logging interval determines how often the
thermometer stores logged readings in memory. You
choose the length of the logging interval. See "Using
Memory."
•
•
•
Press or until the display shows
hour:min or min:sec, and then press to
select.
The left two digits blink.
The thermometer stores logged readings at the end of
each logging interval. You can select a logging interval of
1 second (1), 10 seconds (2), 1 minute (3), 10 minutes (4),
or user-defined ().
Press or until the left two digits you want
appear on the display, and then press to
select them.
The right two digits blink.
You can also set the logging interval manually (0). Each
time you press , the thermometer stores the current
readings in memory.
Press or until the right two digits you
want appear on the display, and then press
to select them.
1. Press or until the display shows INTERVAL.
2. Press to display the logging interval choices.
Holding down or causes the number to
change more quickly.
3. Press or until the display shows the logging
interval you want, and then press to select.
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53IIB/54IIB
Changing Setup Options
Changing the Thermocouple Type
Changing the Offset
1. Press or until the display shows TYPE.
You can adjust the thermometer's readings to compensate
for the errors of a specific thermocouple. See "Using the
Offset to Adjust for Probe Errors." The allowable
adjustment range is 5.0 oC or K, and 9.0 oF.
2. Press to display the thermocouple type choices.
The currently selected thermocouple blinks.
Model 54: You can store individual offsets for T1 and T2.
3. Press or until the thermocouple you want
appears on the display.
1. Press or until the display shows and
T1 or T2.
4. Press to store the thermocouple type in memory.
2. Press to indicate that you want to change the
offset setting.
The temperature measurement plus the offset
appears in the primary display. The offset appears in
the secondary display.
3. Press or until the primary display shows the
correct reading.
4. Press to store the offset setting in memory.
Remember to reset the offset to 0.0 when it is no longer
needed. The offset automatically resets to 0.0 when you
change the thermocouple type.
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Enabling or Disabling Sleep Mode
Setting the Time
The thermometer enters sleep mode if no button press
occurs for 20 minutes.
1. Press or until the display shows the time if it
is set or shows "- - : - -."
Pressing any button wakes the thermometer and returns it
to its previous state.
2. Press to indicate you want to set the time.
The left two digits blink.
1. Press or until the display shows .
3. Press or until the display shows the correct
hour (24-hour format), and then press to select.
2. Press to indicate that you want to change the
sleep setting.
The right two digits blink.
The display shows if sleep mode is on and if
sleep mode is off.
4. Press or until the display shows the correct
minutes, and then press to store the time in
memory.
3. Press or as needed until the display shows
or .
Note
4. Press to store the sleep setting in memory.
Holding down or causes the number to
change more quickly.
Sleep mode is enabled each time you turn on the
thermometer and is automatically disabled in MIN MAX
and logging modes.
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Measuring Temperatures
Changing the Line Frequency
Measuring Temperatures
For optimum rejection of line noise, set the thermometer
for the local line frequency as follows:
Connecting a Thermocouple
Thermocouples are color coded by type based on the
North American ANSI Color Code:
1. Press or until the display shows .
2. Press to indicate that you want to change the line
Type
Color
Black
Type
R
Color
Green
Green
Orange
setting.
J
3. Press or as needed until the display shows
or (50 Hz or 60 Hz).
K
T
E
Yellow
Blue
S
N
4. Press to store the line setting in memory.
Purple
1. Plug a thermocouple into the input connector(s).
2. Set the thermometer for the correct thermocouple
type.
To change the thermocouple type, see “Changing
Setup Options.”
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Displaying Temperatures
Holding the Displayed Temperatures
1. Press to select the correct temperature scale.
1. Press to freeze the readings on the display.
2. Hold or attach the thermocouple(s) to the
measurement location.
The display shows .
2. Model 54: Press to toggle showing the T1, T2, or
The temperature reading appears in the selected
display.
T1-T2 readings in the primary or secondary display.
3. Press again to turn off the HOLD function.
3. Model 54: Press to toggle between showing the
T1, T2, and T1-T2 reading in the primary or
secondary display.
Viewing the MIN, MAX, and AVG Readings
1. Press to step through the maximum (MAX),
minimum (MIN), or the average (AVG) readings.
Notes
The elapsed time since entering MIN MAX mode, or
the time at which the minimum or maximum occurred,
appears on the display.
The display shows "- - - -" when a thermocouple
is not connected.
The display shows (overload) when the
temperature being measured is outside the
thermocouple's valid range.
2. Press , (CANCEL) to exit MIN MAX mode.
Model 54: If only thermocouple T2 is connected,
the T2 reading appears in the primary display.
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53IIB/54IIB
Using Memory
Using the Offset to Adjust for Probe Errors
Using Memory
Use the offset option in Setup to adjust the thermometer's
readings to compensate for the errors of a specific
thermocouple.
During a logging session the thermometer stores logged
readings in its memory.
At the end of the logging session you can view the logged
readings on the display.
1. Plug the thermocouple into the input connector.
2. Place the thermocouple in a known, stable
temperature environment (such as an ice bath or a
dry well calibrator).
You can also transfer the logged readings to a PC running
FlukeView Forms software. (See "Communicating with a
PC.")
3. Allow the readings to stabilize.
FlukeView Forms displays the logged readings on an
online form, which you can print or store for later use.
4. In Setup change the offset until the primary display
reading matches the calibration temperature. (See
"Changing Setup Options.")
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Initial Conditions and Data Entries
Starting and Stopping Logging
Logged readings include initial conditions and data entries.
Setup, memory clear, and PC communications are
inaccessible during logging.
The initial conditions are the thermocouple type and the
offsets for each thermocouple input. You can only view
initial conditions using FlukeView Forms.
1. Set the logging interval. (See “Changing Setup
Options.”)
The data entries are a time stamp, the T1 reading, and the
T2 and T1-T2 readings (Model 54). You can view these
values by pressing or using FlukeView Forms.
Temperature readings display 0.1 degree resolution in
FlukeView Forms.
2. Press to start logging.
The display shows .
3. Press again to stop logging.
4. If you selected a manual logging interval, press
each time you want to store logged readings in
memory.
The thermometer has 500 memory locations. The
thermometer stores 499 sets of temperature readings and
one set of initial conditions when logging continuously. It
stores 250 sets of temperature readings and 250 sets of
initial conditions when logging individual points manually.
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53IIB/54IIB
Using Memory
Clearing Memory
Viewing Logged Readings
When memory is full, appears on the display and
logging stops. You can clear memory in normal or MIN
MAX mode.
1. Press to view logged readings.
The display shows .
2. Press or to scroll through the logged readings.
•
Press , (CLEAR MEMORY) to delete logged
readings from memory.
The display shows each logged reading, its time
stamp, and its memory location. For example,
Figure 3 shows the logged reading stored at 2:02 PM
in memory location 18.
The display shows the following for 2 seconds.
MEMORY
aat03f.eps
Figure 3. Logged Reading
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3. Press to step through the minimum, maximum,
average, and current logged reading. For example,
Figure 4 shows the maximum reading in memory. The
maximum reading occurred at 1:49 P.M. and was
stored in memory location 5.
Communicating with a PC
You can transfer the contents of the thermometer’s
memory to a PC using FlukeView Forms. The
communication requires an IR (infrared) serial connection.
Refer to the FlukeView Forms Installation Guide and
FlukeView Help.
FlukeView Forms places the logged readings into
standard (default) or customized forms. The forms also
display user comments. You can use these forms to
satisfy ISO-9000 documentation requirements.
When you send logged readings to a PC, all functions are
disabled except power off, backlight, and turning off
communication.
aat04f.eps
•
Press , (PC/IR SEND) to toggle the IR port
on and off.
Figure 4. Maximum Reading
4. Press to stop viewing logged readings.
The display shows:
Note
The thermometer calculates the minimum and
maximum of all logging sessions in memory.
When the IR port is enabled you can communicate with
FlukeView Forms.
The display shows "- - : - -" if the log is empty.
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53IIB/54IIB
Maintenance
Calibration
Maintenance
To ensure that the thermometer performs to its accuracy
specifications, Fluke recommends that you calibrate the
thermometer annually, starting one year after purchase.
Replacing the Batteries
Refer to the safety information in Table 1 before replacing
the batteries.
To calibrate the thermometer, contact Fluke for the
Service Center nearest you or follow the calibration
procedure in the service manual listed in "Replacement
Parts and Accessories."
1. Turn off the thermometer if necessary.
2. Loosen the screw and remove the battery door.
3. Replace the three AA batteries.
Specifications
4. Replace the battery door and tighten the screw.
Environmental
-10 oC to 50 oC
(14 oF to 122 oF)
Cleaning the Case and Holster
Operating
Temperature
Use soap and water or a mild commercial cleaner.
-40 oC to +60 oC
(-40 oF to +140 oF)
Storage
Wipe with a damp sponge or soft rag.
Temperature
Non condensing <10 oC (<50 oF)
Humidity
95 % RH: 10 oC to 30 oC (50 oF to 86 oF)
75 % RH: 30 oC to 40 oC (86 oF to 104 oF)
45 % RH: 40 oC to 50 oC (104 oF to 122 oF)
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General
80 PK-1 Thermocouple (supplied with
thermometer)
Weight
280 g (10 oz)
Type K, Chromel Alumel, bead style
Type
2.8 cm × 7.8 cm × 16.2 cm
(1.1 in × 3 in × 6.4 in)
Dimensions
(without
holster)
-40 oC to +260 oC
(-40 oF to +500 oF)
1.1 oC ( 2.0 oF)
Temperature
Range
Battery
3 AA batteries
Accuracy
Certification
Safety
P,
Electrical
)
J-type: -210 oC to +1200 oC
(-346 oF to +2192 oF)
Measurement
Range
CAN/CSA C22.2 No. 61010-1-04, ANSI/UL
61010-1:2004, EN/IEC 61010-1:2001
K-type: -200 oC to +1372 oC
(-328 oF to +2501 oF)
EMC
EN/IEC 61326-1:2006
T-type: -250 oC to +400 oC
(-418 oF to +752 oF)
CAT I
OVERVOLTAGE (Installation) CATEGORY
I, Pollution Degree 2 per IEC1010-1*
* Refers to the level of Impulse Withstand Voltage protection
provided. Category 1 products should not be attached to mains
circuits.
E-type: -150 oC to +1000 oC
(-238 oF to +1832 oF)
N-type: -200 oC to +1300 oC
(-328 oF to +2372 oF)
R- and S-type: 0 oC to +1767 oC
(+32 oF to +3212 oF)
0.1 oC / oF / K <1000o
Display
Resolution
1.0 oC / oF / K ≥1000o
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53IIB/54IIB
Replacement Parts and Accessories
Electrical (cont.)
Applicable
Standards
NIST-175
Measurement
J-, K-, T-, E-, and N-type: [0.05 % of
Accuracy is specified for ambient temperatures between 18 oC
(64 oF) and 28 oC (82 oF) for a period of 1 year. The above
specifications do not include thermocouple error.
Accuracy, T1, T2, reading + 0.3 oC (0.5 oF)] [below -100 oC
or T1-T2
(Model 54)
(-148 oF): add 0.15 % of reading for J-,
K-, E-, and N-type; and 0.45 % of reading
for T-type] R- and S-type: [0.05 % of
reading +0.4 oC (0.7 oF)]
Replacement Parts and Accessories
Temperature
Coefficient
0.01 % reading + 0.03 oC per oC
Accessory
Holster and Flex Stand Assembly
AA NEDA 15A IEC LR6 batteries
80PK-1 K-Type Bead Thermocouple
CD-ROM
Part Number
1272438
376756
(0.05 oF per oF) outside the specified +18
oC to 28 oC (+64 oF to +82 oF) range
[below -100 oC -148 oF): add 0.04 % of
reading for J-, K-, E-, and N-type; and
0.08 % of reading for T-type]
773135
Electromagnetic
Compatibility
Susceptibility: 2 oC ( 3.6 oF) for 80 MHz
to 200 MHz in 1.5 V/m field, for 200 MHz
to 1000 MHz in 3 V/m field.
1276106
1276123
FVF-SC2
Service Manual
Emmisions: Commercial Limits per
EN50081-1
FlukeView Forms
Maximum
1 V (Maximum voltage difference between
T1 and T2)
Differential
Common Mode
Voltage
Temperature
Scale
ITS-90
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