4180 Series Precision
Infrared Calibrators
• Fast, portable and easy
to use
• Correct target size for most
thermometers
• Calibration solutions from
–15 °C to 500 °C
(5 °F to 932 °F)
• Radiometrically calibrated
for traceable and consistent
results
Should your thermometer
be calibrated by one of these?
Calibrate it right the first time with a traceable,
uniform, correctly-sized target.
Business decisions costing thousands of
dollars are based on the results of your
measurements, so they had better be right!
It can be very expensive to shut down a
line for repairs and maintenance, but it
might be catastrophic if the shutdown is
unplanned. To stand by your measurements
with confidence, you should definitely have
your thermometers calibrated.
= IR thermometer
field of view
Smaller target
Manufacturer
recommended
large target
IR thermometer
spot size
Infrared
thermometers have
peripheral vision.
Common pitfalls in infrared thermometer calibration
• If the target size is too small, the thermometer will not read the right temperature. This problem, called
size of source effect, is addressed by the large, 152.4 mm (six in) target of the 4180 series, which was
designed to accommodate the field of view and calibration geometry requirements of certain common
infrared thermometers used in the field, lab and process control.
• Some people are misled by the accuracy statements on IR calibrators because they are not familiar with
the concept of emissivity. Look for calibrators with a “radiometric calibration” so that accuracy will be
straightforward and uncomplicated by emissivity-related errors.
For more information on emissivity, size of source effect and radiometric calibration, see Hart Scientific
application note “Infrared Temperature Calibration 101” or choose a calibrator like the 4180 series that you
know has already addressed all of these issues.
How to get consistent
results:
Even those infrared thermom-
eters that cannot be adjusted can
benefit from a calibration that
demonstrates the consistency and
validity of your results. A trusted
calibration means less worry,
fewer questions and more time
being productive. To get more
reliable, traceable, and consistent
results, buy a precision infrared
calibrator from Fluke’s Hart Scien-
tific Division.
The 4180 Series of Precision
Infrared Calibrators for infrared
thermometers and thermal imag-
ers is fast, accurate, and easy to
use. It comes with an accred-
ited calibration from one of the
world’s most trusted temperature
calibration laboratories, sample
calibration procedures for Fluke
thermometers built right in and
everything you need to get started
making high-quality infrared ther-
mometer calibrations. This is the
perfect solution for any infrared
thermometer or thermal imager
within its temperature range.
The 4180 reaches temperatures
from –15 °C to 120 °C and the
4181 has a temperature range
from 35 °C to 500 °C. Check
out the uniformity of the large
152.4 mm (six in) targets shown
in the Fluke Ti30 photo. The uni-
formity and stability are so good
that variations can’t be detected
with a thermal imager. Uniformity
is important in infrared tempera-
ture calibration work because an
infrared thermometer will “see”
as much as the entire target
when placed at the appropriate
calibration distance and each
pixel of a thermal imager regis-
ters a temperature that needs to
be both accurate and consistent
across the imager.
In addition, with accuracies
as good as ± 0.35 °C, the 4180
Series can meet its specifications
without additional emissivity-
related corrections, leading to
legitimate test uncertainty ratios
(TUR) as good as 4:1. (See the
sidebar below for information
about common pitfalls in infrared
calibrator accuracy and have a
look at our Guide to Infrared Ther-
mometer Calibration
to get started quickly with your
new calibrator.)
Fluke Corporation
Hart Scientific Division
799 E Utah Valley Drive
American Fork, UT 84003
Tel: 801.763.1600
Fax: 801.763.1010
E-Mail: info@hartscientific.com
www.hartscientific.com
Fluke Europe B. V.,
Hart Scientific Division
PO Box 1186, 5602 BD Eindhoven
The Netherlands
Tel: +31 (0)40 2675 403
Fax: +31 (0)40 2675 404
E-mail: Hart.Logistics@Fluke.NL
All other countries:
Tel: +1 801.763.1600
Fax: +1 801.763.1010
©2008 Fluke Corporation. All rights reserved.
Specifications subject to change without notice.
1/2008 3100137 D-EN-Rev B
Pub_ID: 11335-eng, rev 01
Fluke. Keeping your world
up and running®
Specifications
Feature 4180 4181
Temperature range
(@ 23 °C ambient,
0.95 emissivity)
–15 °C to 120 °C 35 °C to 500 °C
Display accuracy1± 0.40 °C at –15 °C
± 0.40 °C at 0 °C
± 0.50 °C at 50 °C
± 0.50 °C at 100 °C
± 0.55 °C at 120 °C
± 0.35 °C at 35 °C
± 0.50 °C at 100 °C
± 0.70 °C at 200 °C
± 1.20 °C at 350 °C
± 1.60 °C at 500 °C
Stability ± 0.10 °C at –15 °C
± 0.05 °C at 0 °C
± 0.10 °C at 120 °C
± 0.05 °C at 35 °C
± 0.20 °C at 200 °C
± 0.40 °C at 500 °C
Uniformity2
(5.0 in dia of center
of target)
± 0.15 °C at –15 °C
± 0.10 °C at 0 °C
± 0.25 °C at 120 °C
± 0.10 °C at 35 °C
± 0.50 °C at 200 °C
± 1.00 °C at 500 °C
Uniformity2
(2.0 in dia of center
of target)
± 0.10 °C at -15 °C
± 0.10 °C at 0 °C
± 0.20 °C at 120 °C
± 0.10 °C at 35 °C
± 0.25 °C at 200 °C
± 0.50 °C at 500 °C
Heating time 15 min: –15 °C to 120 °C
14 min: 23 °C to 120 °C
20 min: 35 °C to 500 °C
Cooling time 15 min: 120 °C to 23 °C
20 min: 23 °C to –15 °C
100 min: 500 °C to 35 °C
40 min: 500 °C to 100 °C
Stabilization time 10 minutes 10 minutes
Nominal emissivity30.95 0.95
Thermometer emissivity
compensation
0.9 to 1.0
Target diameter 152.4 mm (6 in)
Computer interface RS-232
Power 115 V ac (± 10%), 6.3 A,
50/60 Hz, 630 W
230 V ac (± 10%), 3.15 A,
50/60 Hz, 630 W
115 V ac (± 10%), 10 A,
50/60 Hz, 1000 W
230 V a (± 10%), 5 A,
50/60 Hz, 1000 W
Fuse(s) 115 V ac 6.3 A, 250 V, slow blow
230 V ac 3.15 A, 250 V, T
115 V ac 10 A, 250 V, fast blow
230 V ac 5 A, 250 V, F
Size (HxWxD) 356 mm x 241 mm x 216 mm
(14 in x 9.5 in x 8.5 in)
356 mm x 241 mm x 216 mm
(14 in x 9.5 in x 8.5 in)
Weight 9.1 kg (20 lb) 9.5 kg (21 lb)
Safety EN 61010-1:2001, CAN/CSA C22.2 No. 61010.1-04
1For 8 mm to 14 mm spectral band thermometers with emissivity set between 0.9 and 1.0
2The uniformity specification refers to how IR thermometers with different spot sizes both focused at the
center of the target will measure the same temperature.
3The target has a nominal emissivity of 0.95, however it is radiometrically calibrated to minimize
emissivity related uncertainties.
Ordering
information
4180 Precision Infrared
Calibrator, –15 °C to 120 °C
4181 Precision Infrared
Calibrator, 35 °C to 500 °C
4180-CASE Carrying Case,
4180 or 4181
4180-A P RT 2” Aperture,
4180 or 4181
4180-DCAS Case, Transportation
with wheels, 4180 or 4181
Included accessories
Accredited radiometric calibra-
tion report, target cover, User
Guide, Getting Started Guide,
and 9930 Interface-it software
with User Guide
