Fluke 51-54 Series II Operating and safety instructions

®
PN 1276114
September 1999 Rev.1, 6/01
© 1999-2001 Fluke Corporation, All rights reserved. Printed in USA
All product names are trademarks of their respective companies.
51-54 Series II
Thermometer
Características de los productos
Informações gerais sobre o produto
Productoverzicht
Produktoversikt
Oversigt over termometerserien
Yleiskatsaus
Produktöversikt
Produktübersicht
Descrizione generale del prodotto
Présentation du produit
Product Overview

LIMITED WARRANTY & LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for
3 years from the date of purchase. This warranty does not cover fuses,
disposable batteries or damage from accident, neglect, misuse or abnormal
conditions of operation or handling. Resellers are not authorized to extend
any other warranty on Fluke’s behalf. To obtain service during the warranty
period, send your defective tester to the nearest Fluke Authorized Service
Center with a description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES,
SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED
OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING
FROM ANY CAUSE OR THEORY. Since some states or countries do not
allow the exclusion or limitation of an implied warranty or of incidental or
consequential damages, this limitation of liability may not apply to you.
Fluke Corporation
P.O. Box 9090
Everett WA
98206-9090
Fluke Europe B.V.
P.O. Box 1186
5602 B.D. Eindhoven
The Netherlands
To register your product, visit www.fluke-warranty.com
10/96

1
51–54 Series II
Introduction
The Fluke Models 51, 52, 53, and 54 Thermometers (“the
thermometer”) are microprocessor-based, digital
thermometers.
This guide provides an overview of the thermometers.
Detailed
Users Manuals are available on the accompanying
CD-ROM. Each thermometer comes with a 3-year
warranty, which is described in the
Users Manual.
Model Inputs Thermocouple Types
51 Single J, K, T, E
52 Dual J, K, T, E
53 Single J, K, T, E, R, S, N
54 Dual J, K, T, E, R, S, N
The Models 53 and 54 have logging and PC interface
capabilities.

51-54 Series II
Product Overview
2
Contacting Fluke
To order accessories, a printout of the Users Manual,
receive assistance, or locate the nearest Fluke distributor or
Service Center, call:
USA: 1-888-99-FLUKE (1-888-993-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: [phone]
Japan: [phone]
Singapore: [phone]
Anywhere in the world: [phone]
Address correspondence to:
Fluke Corporation Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett, WA 98206-9090 5602 BD Eindhoven
USA The Netherlands
Visit us on the World Wide Web at: www.fluke.com
To register your product, visit www.fluke-warranty.com
Replacement Parts and Accessories
Accessory Part Number
Holster and Flex StandAssembly 1272438
AA NEDA 15A IEC LR6 batteries 376756
80PK-1 K-Type Bead Thermocouple 773135
CD-ROM 1276106
Service Manual 1276123

51–54 Series II
Safety Information
3
Safety Information
WWarning
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 (B)
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.
•Do not operate the thermometer around explosive gas,
vapor, or dust.
•Do not apply more than the rated voltage, as marked on
the thermometer, between the thermocouple(s), or
between any thermocouple and earth ground.

51-54 Series II
Product Overview
4
W
Warning (cont.)
•
Models 52 and 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
To avoid damaging the thermometer or the equipment
under test.
•Use the proper thermocouples, function, and range for
your thermometer.
•Do not attempt to recharge the batteries.
•Do not throw batteries into a fire to prevent explosion.
•Follow local laws or regulations when disposing
batteries.
•Match the +and −polarities of the battery with the battery
case.

51–54 Series II
Components
5
Components
x
3
4
5
12
6
7
aat10f.eps
A
Thermocouple T1 input
E
Buttons
B
Models 52 and 54:
Thermocouple T2 input
F
Battery door
C
Holster
G
Batteries
D
Display

51-54 Series II
Product Overview
6
Display Elements
x
1
12
11
23457
6
8
9
10
aat11f.eps
A
Measurement includes an
offset.
G
Low battery.
B
Displayed readings are
frozen.
H
Primary Display.
C
Shift function is in progress.
I
Temperature units.
D
Readings are being logged.*
J
Secondary Display.
E
Setup is in progress.
K
Thermocouple type.
F
Logged readings are
displayed.*
L
Time Display.
* Models 53 and 54

51–54 Series II
Buttons
7
Buttons
A
Turn the thermometer on or off.
G
(Shift
function)
G
,
M
= stop displaying the minimum,
maximum, and average readings.
G
,
J
= delete logged readings from memory.
G
,
r
= toggle the IR port on and off.
Q
Turn the backlight on and off.
M
Step through the maximum, minimum, and average
readings.
C
Switch between Celsius (oC), Fahrenheit (oF), and
Kelvin (K).
h
Freeze or unfreeze the displayed readings.
TToggle showing the T1, T2, and T1-T2.
(Models 52
and 54)
D
Start or exit Setup.
K
Scroll to a Setup option or increase the displayed
setting.
N
Scroll to a Setup option or decrease the displayed
setting.
E
Enter a Setup option or store the displayed setting.
J
Start or stop logging.*
r
Show toggle showing logged and MIN MAX
readings.*
* Models 53 and 54

51-54 Series II
Product Overview
8
Changing Setup Options
1. Press Dto start or exit Setup.
2. Press K or Nto scroll to the setup option you want
to change.
3. Press
Eto indicate that you want to change this
setting.
4. Press
K or Nuntil the setting you want to use
appears on the display.
5. Press
Eto store the new setting in memory.
Setup Options
Option Menu Item Settings
Logging
Interval* INTERVAL 0, 1, 2, 3, 4, or
USef
Thermocouple TYPE JKTERSN
Offset
O
T1 or T2
Sleep Mode
SLP on
or
0FF
Time* - - : - - 0 to 24 for hours
0 to 60 for minutes
Line Frequency
Noise Rejection
Li ne
60 H (60 Hz North
America)
50 H (50 Hz other
countries)
* Models 53 and 54

51–54 Series II
Specifications
9
Specifications
General
Weight 280 g (10 oz)
Dimensions
(without holster) 2.8 cm ×7.8 cm ×16.2 cm
(1.1 in ×3 in ×6.4 in)
Battery 3 AA batteries
Certification
P , ) s
Safety CSA C22.2 No. 1010.1 1992
EN 61010 Amendments 1, 2
CAT I OVERVOLTAGE (Installation) CATEGORY I,
Pollution Degree 2 per IEC1010-1*
* Refers to the level of Impulse Withstand Voltage protection provided.
Equipment of OVERVOLTAGE CATEGORY I is equipment for
connection to circuits in which measures are taken to limit the transient
over voltages to an appropriate low level. Example include protect
electronic circuits.
Environmental
Operating
Temperature −10 oC to 50 oC (14oF to 122oF)
Storage
Temperature −40oC to +60oC (−40 oF to +140oF)
Humidity Non condensing <10oC (<50oF)
95% RH: 10oC to 30oC (50oF to 86oF)
75% RH: 30oC to 40oC (86oF to 104oF)
45% RH: 40oC to 50oC (104oF to 122oF)

51-54 Series II
Product Overview
10
Electrical
Measurement
Range J-type: −210 oC to +1200 oC (−346 oF to +2192 oF)
K-type: −200 oC to +1372 oC (−328 oF to +2501 oF)
T-type: −250 oC to +400 oC (−418 oF to +752 oF)
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)
Display
Resolution 0.1 oC / oF / K <1000o
1.0 oC / oF / K ≥1000o
Measurement
Accuracy J-, K-, T-, E-, and N-type: ±[0.05 %of reading +0.3
oC (0.5 oF)] [Below −100 oC (−148 oF): add 0.15 % of
reading for J, K, E, and N; and 0.45 % of reading for T]
R- and S-type: ±[0.05 %of reading +0.4 oC (0.7 oF)]
Temperature
Coefficient 0.01 %of reading +0.03 oC per oC (0.05 oF per oF)
outside the specified +18 oC to 28 oC (+64oF 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]
Electromagnetic
Compatibility Susceptibility: ±2oC (±3.6oF) for 80 MHz to 200 MHz in
1.5 V/m field, for 200 MHz to 1000 MHz in 3 V/m field.
Emmisions: Commercial Limits per EN50081-1
Maximum
Differential
Common Mode
Voltage
1 V (Maximum voltage difference between T1 and T2)
Temperature
Scale ITS-90
Applicable
Standards NIST-175
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.