The Fluke 66 and 68
Infrared Thermometers
Non-contact temperature measurement
Technical Data
The professional’s diagnostic tool
The Fluke 66 and Fluke 68 non-contact thermometers
are the ideal professional diagnostic tools for HVAC
technicians performing room balance checks, electricians
evaluating electrical connections and auto mechanics
diagnosing catalytic converters. This handheld portable
tool enables professionals to research heating and venti-
lation problems, monitor the status of electrical motors
and electrical panels and diagnose car malfunctions with
ease. They measure surface temperatures, helping to
quickly locate potential blockages or malfunctioning
systems reducing work time and improving performance.
The 60 series thermometers feature:
•Laser guided sighting system for easy targeting with
1 % accuracy.
•12-point data logging.
•Advanced optics to measure smaller targets at greater
distances.
•Adjustable emissivity for more accurate temperature
measurements.
•Selectable MAX, MIN, DIF and AVG functions that
display values instantly with Hi/Lo Alarm.
•
Temperatures up to 760 ºC (1400 ºF) (68, 68IS).
•
Intrinsically Safe model available (68IS).*
Optical resolution
The laser sighting system guides measurements to the
right target and indicates the approximate center of the
measurement area.
(D:S = distance to spot using 90 % encircled energy at focal point).
The 68IS*model is available for the noncontact
temperature monitoring needs of potentially explosive
or flammable environments.
*Approved by Factory Mutual Research, a USA organization, for use in hazardous locations.
The 68IS approval does not apply to atmosphere containing coal dust, grain dust, metal dust
or fibers. Check your national and company regulations to determine if this approval is
appropriate for your situation.
(68IS only)
Fluke Corporation
PO Box 9090, Everett, WA USA 98206
Fluke Europe B.V.
PO Box 1
186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (800) 443-5853 or Fax (425) 446-51
16
In Europe/M-East/Africa +31 (40) 2 675 200 or Fax +31 (40) 2 675 222
In Canada (800) 36-FLUKE or Fax (905) 890-6866
From other countries +1 (425) 446-5500 or Fax +1 (425) 446-5116
Web access: http://www.fluke.com
©2005 Fluke Corporation. All rights reserved.
Printed in U.S.A. 6/2005 2153543 D-US-N Rev C
Fluke. Keeping your world
up and running.
Specifications
Fluke 66 Fluke 68/68IS*
Temperature range -32 to 600 °C -32 to 760 °C
(-25 to 1100 °F) (-25 to 1400 °F)
Accuracy -32 to -26 °C (-25 to -15 °F): ±3 °C (±5 °F)
(assumes ambient -26 to -18 °C (-15 to 0 °F): ±2.5 °C (±4 °F)
operating temperature -18 to 23 °C (0 to 73 °F): ±2 °C (±3 °F)
of 23 °C [73 °F]) For targets above 23 °C (73 °F): ±1 % or reading
or ±1 °C (±2 °F), whichever is greater
Repeatability ±0.5 % or ≤±1 °C (±2 °F), whichever is greater
Response time ≤0.5 second (95 % of reading)
Spectral response 8 to 14 µm
Emissivity Digitally adjustable emissivity
(from 0.1 to 1.0 by 0.01)
Ambient operating temp. 0 to 50 °C (32 to 120 °F)
Relative humidity 10 to 90 % RH non-condensing,
at <30 °C (86 °F) ambient
Storage temperature -20 to 60 °C (-13 to 158 °F) without battery
Dimensions 200 x 160 x 55 mm (8 x 6 x 2 in.)
Weight 320 g (11 oz.)
Power 9 V alkaline or NiCd battery
Batter life (alkaline) 20 hours with laser and backlight on 50 %
40 hours with laser and backlight off
Laser sighting (Class II) Offset single point laser point
Typical distance to target 5 m (15 ft.) 8 m (25 ft.)
Distance to Spot (D:S) 30:1 at focus point 50:1 at focus point
MIN, MAX, AVG, DIF
Temperature display•
Data logging 12 points
Probe jack •
Display hold (7 seconds) •
Hi/Low alarm •
LCD backlit •
Temperature display °C or °F selectable
Display resolution 0.1 °C (0.1 °F)
Hard carrying case •
Locking trigger •
Tripod mounting 6.35 mm (.25 in.) 20 UNC threading
Warranty 2 years, conditional
* Approved by Factory Mutual Research for use in hazardous locations.
Optional accessories:
•RTD temperature probe (standard w/68IS)
32 ºC to 260 ºC (-25 ºF to 500 ºF)
•Non-contact thermometer holster
Ordering information
Fluke 66 Infrared Thermometer
Fluke 68 Infrared Thermometer
Fluke 68IS Infrared Thermometer
Included
Use the Fluke 66 within 5 m (15 ft.) of the
intended target. At greater distances, the
measured area will be larger (approximately
the distance divided by 30).
0.9" @
12"
D:S = 30:1
at focal point S
D
1.2" @
36"
2.5" @
60"
Use the Fluke 68 and 68IS within 8 m (25 ft.) of
the intended target. At greater distances, the
measured area will be larger (approximately the
distance divided by 50).
0.8" @
12"
D:S = 50:1
at focal point S
D
0.7" @
36"
1.7" @
60"
*Included w/68IS
Standard Feature (68IS only)
•Factory Mutual Research Intrinsically Safe
approval, including probe (Intrinsically safe,
Class I Division 1 Groups A, B, C, D Class I,
Zone 0, AEx ia IIC, T4 at 50 ºC when used
with 9V alkaline battery.) Groups A, B, C, D
refers to: Acetylane, Hydrogen, Ethylene
and Propane.
