Keysight Technologies
U5850 Series TrueIR Thermal Imagers
Data Sheet
ECN 2015 Impact Award Winner
Cooling and Thermal Management
2015
Cooling and
Thermal Management
Introduction
Find potential problems faster with the higher resolution and affordability of our TrueIR Series of thermal
imagers. Only from Keysight1 can you get a 320 x 240 fine resolution thermal imager with image logging
and trending capability at a lower price than the typical 320 x 240 resolution thermal imager.
– Identify abnormalities faster with four times more in-camera fine resolution
– Monitor temperature changes through image logging and temperature trending capabilities
– Ability to focus on objects as close as 10 cm away
– Compact, lightweight, ergonomic
– High temperature range (up to 1200 °C)
– Easy-to-use customizable color palette
– Configurable quick access buttons to easily change settings with one hand
– Long product warranty — 3 years
Today’s hottest imagers
1. Keysight Technologies, Inc.
Confidently detect problems with four times better resolution
03 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
Get more details with fine resolution
Fine resolution is a technology that restores the details originally
inherent to the object while enhancing the resolution, at the
same time minimizing fuzziness and noise. It is accomplished by
performing sophisticated calculations on continuous multi-frames
of the image — evaluated for misalignment caused mainly by hand
tremor. The firmware then detects and corrects the information
between images through one feature pixel.
With fine resolution,
– Get an effective 320 x 240 pixels of radiometric JPEG IR
image which is clearer and sharper.
– See fine details on objects as close as 10 cm, especially when
measuring temperature on small components which are close
to each other.
– With four times digital zoom, magnify a thermal image of a
far-away object to quickly identify anomalies and to reveal
even finer details.
– These are essential for industrial, building inspection,
electronics, as well as medical research.
TrueIR Analysis and Reporting Tool
Download from
www.keysight.com/find/TrueIR_ART
Figure 1. Samples of IR images
Image logging and temperature trending
Image logging is a capability that enable users to monitor the
performance of their object or DUT at a specified interval. Users
performing temperature profiling of their design or performing
equipment failure analysis will find this feature useful, especially
with the easy to use TrueIR Analysis and Reporting tool.
With this PC software, users can import, analyze, edit and
present their thermal images to their clients swiftly.
Detect Abnormalities Sooner with Higher Resolution Thermal Images Within
the Camera
Continuous multi-frames
of low resolution images
Four times more resolution,
noise eliminated
04 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
Front and Back Panels
Adjustable hand strap for
better grip (for right-handed
or left-handed use)
Large 3.5 inch color
LCD display
Light/Laser control key Power On/Off key
View/Zoom key Back/Exit key
Play/Delete key Auto/Manual scale key
Navigation/Enter key
Quick access buttons to
easily change settings
or functions
Front panel
Video out port
DC power inlet
SD memory card slot
USB Mini-B port
Back panel
Infrared (IR) image camera
lens (with shutter)
Focus adjustment ring
Camera trigger key
Flash light
Laser pointer
Visible image
camera
05 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
Specification
Specifications are warranted in the temperature range of 0 to 40 °C and after 2 minutes of power up, unless otherwise noted.
Supplemental characteristics — which are not warranted, but are descriptions of performance — are determined either by design or
testing.
Performance specifications
Parameter Specification
U5855A U5856A U5857A
Basic performance
Temperature measurement range –20 ~ 350 °C –20 ~ 650 °C –20 ~ 1200 °C
Range 1: –20 to 120 °C -20 to 120 °C –20 to 120 °C
Range 2: 0 to 350 °C 23 to 650 °C* 0 to 350 °C
Range 3: NA NA 250 to 1200 °C **
Note *: Lower limit temperature
at 0°C, Guaranteed lower
temperature at 23°C.
Note **: Lower limit temperature
at 0°C, Guaranteed lower
temperature at 250°C
Thermal sensitivity
Range 1: 0.07 °C (at 30 °C) 0.07 °C (at 30 °C) 0.07 °C (at 30 °C)
Range 2: 0.1 °C (at 30 °C) 0.5 °C (at 30 °C) 0.1 °C (at 30 °C)
Range 3: NA NA 0.5 °C (at 250 °C)
Accuracy 1 ± 2 °C or ± 2% (whichever is greater)
At 0 ~ 40 °C ambient temperature
Detector type Uncooled focal plane array (α-Si)
Detector resolution 160 × 120
Fine resolution (in-camera) 320 × 240 (IR pixels)
Spectral range 8 to 14 μm
Frame rate 9 Hz
Field of view (FOV) 28 ° (H) × 21° (V)
Spatial resolution (IFOV) 3.1 mrad; 2.1 mrad (with fine resolution)
Focal distance 10 cm to infinity
Focus mechanism Manual focus
Image processing and enhancement
Correction parameters Emissivity <ε>, reflected temperature <RT>, object distance <OD>, ambient temperature <AT>,
relative humidity <Hum>, transmission <Ʈ>
Emissivity correction 0.1 to 1.0
Predefined emissivity table
Digital zoom Zoom ratio: 4x continuous
Color palette - Different color palette for
different models:
Rainbow, Iron, Hot Iron, Iris,
Grayscale, Inverted Grayscale,
Custom
Rainbow, Lava, Iron, Hot Iron,
Iris, Olive, Medical, Grayscale,
Inverted Grayscale, Custom
Rainbow, Lava, Iron, Hot Iron,
Iris, Olive, Medical, Grayscale,
Inverted Grayscale, Custom
Camera mode IR image, visible image, picture in picture, blend
Measurements and alarm
Measurements Center spot, 3x movable spots, max/min tracking, delta temperature, 3x movable boxes
(with min/max/avg)
Color alarm
Alarm zones
Backgrounds
High/low temperature in all areas
Above/below/inside/outside
Hot white/Hot black
1. Minimum distance with accuracy, 10 cm to 50 cm: ± 4 °C or ± 4%.
06 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
Supplemental characteristics
Parameter Specification
Storage device Supports up to 32 GB SDHC memory card with class 4 and above
Image storage format
Thermal Image Radiometric JPEG
Visible Image JPEG
Image logging Logs IR, visible or fusion images at a defined interval (7 to 3600 seconds)
State storage memory Three user-configurable stored states
Tagging/annotation 3 photo tags, note tag, note tag from template (downloadable from the Keysight Technologies, Inc. web site)
I/O USB 2.0 mass storage
NTSC/PAL via video RCA cable
Language English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Simplified Chinese, Traditional Chinese
Built-in quick start tutorial Available
Product characteristics
Parameter Specification
Power supply
Power adapter Line voltage range: 50/60 Hz, 100 – 240 VAC (Auto/Universal voltage), 1.2 A
MAINS supply voltage fluctuations not to exceed ± 10% of the nominal voltage
Output voltage: 12 VDC, 3 A
Installation Category I (Isolated ELV supply source — connected to MAINS through an AC/DC power adapter)
Battery Li-Ion rechargeable battery, 7.4 VDC, 2500 mAh
Operating time: 4 hours
Display 3.5” TFT
Visible camera 3.1 MP
Built-in led torch Available
Laser pointer Class 2
Warm-up time 2 minutes
Operating environment
Temperature –15 °C to 50 °C
Humidity Up to 95% RH at 40 °C
Storage compliance
Temperature –40 °C to 70 °C
Humidity Up to 95% RH at 40 °C
Altitude Up to 2000 m
Pollution degree 2
Safety compliance Laser safety: IEC 60825-1/EN 60825-1 (Laser Class 2)
IEC 61010-1/EN 61010-1
EMC compliance IEC 61326-1/EN61326-1
CISPR11/EN55011, Group 1 Class A
Canada: ICES/NMB-001: Issue 4, June 2006
Australia/New Zealand: AS/NZS CISPR 11
Shock Tested to IEC 60068-2-27 Ed. 3.0
Vibration Tested to IEC 60068-2-6
Tripod mount thread ISO 1222:2010 Standard screw thread, 1/4 - 20 UNC
Drop test 2 m
Protection class 2
IP rating IP 54
Dimensions (W × H × D) 95 × 250 × 85 mm
Weight 0.746 kg (with battery)
Warranty Refer to www.keysight.com/go/warranty_terms
3 years for the product
3 months for the standard accessories unless otherwise specified
Calibration cycle 1 year
07 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
Figure 2. Relationship between the Field of View (FOV) and the distance to target
Ordering Information
Model number Description
U5855A TrueIR thermal imager, 350 degree Celsius
U5856A TrueIR thermal imager, 650 degree Celsius
U5857A TrueIR thermal imager, 1200 degree Celsius
Option number Description
U5855A-100 U5855A TrueIR thermal imager with 2-bay charger and additional battery
U5856A-100 U5856A TrueIR thermal imager with 2-bay charger and additional battery
U5857A-100 U5857A TrueIR thermal imager with 2-bay charger and additional battery
Standard shipped accessories
–Power adapter with power cord
–Rechargeable Li-Ion battery
–SD memory card
–Video RCA to RCA interface cable, 2 m
–USB standard-A to mini type-B interface cable, 1 m
–Hand strap
–Rugged, hard carrying case
–Quick start guide
–Certificate of calibration
U5855A U5856A U5857A
08 | Keysight | MU5850 Series TrueIR Thermal Imagers – Data Sheet
Optional accessories
U5751A Power adapter (with power cord)
U5752A Rechargeable Li-Ion battery
U5753A External battery charger (2-bay)
U5761A Video RCA to RCA interface cable, 2 m
U5762A USB standard-A to mini type-B interface cable, 1 m
U5771A Rugged carrying case, hard
U5772A Hand strap, adjustable for right-handed and left-handed use
For more information on Keysight
Technologies’ products, applications or
services, please contact your local Keysight
office. The complete list is available at:
www.keysight.com/find/contactus
Americas
Canada (877) 894 4414
Brazil 55 11 3351 7010
Mexico 001 800 254 2440
United States (800) 829 4444
Asia Pacific
Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 11 2626
Japan 0120 (421) 345
Korea 080 769 0800
Malaysia 1 800 888 848
Singapore 1 800 375 8100
Taiwan 0800 047 866
Other AP Countries (65) 6375 8100
Europe & Middle East
Austria 0800 001122
Belgium 0800 58580
Finland 0800 523252
France 0805 980333
Germany 0800 6270999
Ireland 1800 832700
Israel 1 809 343051
Italy 800 599100
Luxembourg +32 800 58580
Netherlands 0800 0233200
Russia 8800 5009286
Spain 800 000154
Sweden 0200 882255
Switzerland 0800 805353
Opt. 1 (DE)
Opt. 2 (FR)
Opt. 3 (IT)
United Kingdom 0800 0260637
For other unlisted countries:
www.keysight.com/find/contactus
(BP-04-23-15)
09 | Keysight | U5850 Series TrueIR Thermal Imagers – Data Sheet
This information is subject to change without notice.
© Keysight Technologies, 2015
Published in USA, June 2, 2015
5991-4297EN
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08 | Keysight | MU5850 Series TrueIR Thermal Imagers – Data Sheet
