testo 835 Pro
Series Infrared
Thermometers
Simplify difcult measuring tasks
with high performance
IR thermometers
50:1 long distance optics
4-point laser shows the exact measuring area for
precise readings
High temperature range up to 2700 °F (model 835-T2)
We measure it.
°F / °C
%rH
Emissivity charts for accurate surface measurements
Contact, type K thermocouople input and wide selection
of probe choices
Simple joystick operation and easy navigation icons
Memory and software for data management and analysis
Use the 835 IR Thermometer in trade and industry
applications such as plant and facility maintenance,
monitoring electrical and mechanical components, checking
air conditioning and heating equipment, and practicing
manufacturing and quality control or anywhere highly
accurate temperature measurements are required.
The 835 thermometer is one of the most flexible and
versatile IR thermometers in its class. It is extremely useful
for monitoring the temperature of smaller or moving objects.
It can easily access difficult to reach locations and help
you measure extremely hot material at a safe distance. In
addition, you can measure various different surfaces (i.e.
metal, glass, ceramics) up to 2700 °F with just the press of
button without adjusting or re-calibrating.
Point, shoot, measure!
www.testo.com
testo 835
We measure it.
Specications
835-T1 835-T2 835-H1
Non-contact IR
Optics 50:1 (6.5 ft measuring distance
Laser sighting 4 point laser
Spectral range 8 to 14 µm
Measuring range -22° - 1112 °F 14° - 2732 °F -22° - 1112 °F
Accuracy ±4.5 °F (-22° to -4 °F)
±2.7 °F (-4° to 32 °F)
±1.8 °F (32° to 212 °F)
1% of rdg (rem. range)
±3.6 °F or 1% of rdg ±4.5 °F (-22° to -4 °F)
±2.7 °F (-4° to 32 °F)
±1.8 °F (32° to 212 °F)
1% of rdg (rem. range)
Resolution 0.1 °F 0.1 °F ( -14° - 1830 °F)
1 °F ( 1832 - 2732 °F)
0.1 °F
Type K contact
Measuring range -72° - 1112 °F -72° - 1830 °F -72- 1112 °F
Accuracy ±(-0.9 °F +0.5% rdg)
Resoution 0.1 °F
Testo humidity sensor
Measuring range - 0 to 100% rH
Accuracy - ±2 %rH
Resolution - 1.8 °F
0.1 %rH
0.1 °Ftd
General technical data
Emissivity 0.10 to 1.00 (steps 0.01)
Emissivity table 20 values on board
Laser spot On / Off
Memory hi/lo limit 200 values
Alarm (max / min values) IR / TC temperature
Alarm signal Audible (optional)
Operating temperature -4° - 122 °F
Dimensions 7.6 x 6.5 x 2.5 in
Weight 1 lb
Battery 3 AA (or USB operating with PC-Software)
Battery life 25 hr (w/o laser and backlight)
10 hr (w/o backlight)
Auto OFF Backlight: 30 secs
Instrument: 120 secs.
Warranty 2 years
testo 835 We measure it.
Probes
Probe type Dimensions (shaft and probe tip) Measuring
range
Air probe, TC
type K, 4 ft.
cable
Immersion
probe, waterproof, TC type
Ø 0.06“
4.5“
Ø .16“
12“
-76° - 752 °F Class 2 25 0602 1793
-76° - 1832 °F Class 1 2 0602 0593
K, 4 ft. cable
Immersion/penetration probe,
waterproof, TC
type K, 4 ft.
2.4“ 0.6“
-76° - 1472 °F Class 1 3 0602 2693
Ø 0.2“ Ø 0.06“
cable
Immersion/penetraton probe,
waterproof, 4 ft.
4.5“ 2“
-76° - 752 °F Class2 7 0602 1293
Ø 0.2“ Ø 0.15“
cable
3“
Ø 0.2
6“
Ø 0.01
4.5“
Ø 0.2“
5.7“
Ø 0.31“
Ø 0.5“
Ø 0.5“
1.6“
2“
Ø 0.16
-76° - 572 °F Class2 3 0602 0393
32 ° - 572 °F Class 2 5 0602 0193
-76° - 572 °F Class 2 3 0602 0993
-76° - 1832 °F Class 1 20 0602 0693
Surface probe,
spring TC, type
K, 4 ft cable
Surface probe
(paddle) TC type
K
Surface probe
w/bend, spring
TC, type K, 4 ft.
cable
Surface probe,
waterproof,
small flat probe
head, TC type
K, 4 ft cable
Magnetic probe
for metal surfaces, TC type
3“
Ø 0.8“
-58° - 752 °F Class 2 0602 4892
K, 5 ft. cable
Pipe wrap probe
w/ velcro (5”),
TC type K, 5 ft.
15.6“
Ø 0.8“
-58° - 248 °F Class 1 90 0628 0020
cable
Pipe wrap probe
w/ adjustable
head (0.2 to
-76° - 266 °F Class 2 5 0602 4592
2.5”) TC type K,
4 ft. cable
Accuracy t
Part no.
(secs)
testo 835
Ordering data
We measure it.
testo 835-T1 Standard
testo 835-T1, IR thermometer, 4-point laser
sighting, data logging, and external probe input
incl. batteries and calibration protocol
Part no. 0560 8351
testo 835-H1 Moisture Module
testo 835-H1, IR thermometer, 4-point laser
sighting, data logging, and external probe input,
humidity module, incl. batteries and
calibration protocol
Part no. 0560 8353
testo 835-T2 High Temperature
testo 835-T2, IR thermometer, 4-point laser
sighting, data logging, and external probe input,
incl. batteries and calibration protocol
12_TES_XXXXXSubject to change without notice.
Part no. 0560 8352
Accessories Part no.
Bracket 0440 0950
USB cable for PC 0449 0047
Adhesive tape (1 roll) 32 ft. 0554 0051
Silicone heat paste (max. 500 °F) 0554 0004
NIST Temperature Calibration for IR Thermometer 400520 1911
Testo, Inc
40 White Lake Rd.
Sparta, NJ 07871
800-227-0729
Fax -862-354-5020
email: info@testo.com
www.testo.com
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