testo 845 Infrared Thermometer

NEW! testo 845
Infrared Thermometer with Switchable Optics

This pyrometer offers what few others in the market can –
switchable optics. With just a flip of a switch, you can shift
between close focus and long distance temperature
measurements with accuracy and ease. Use the 845 to
measure points as close as ¼ inch, then simply slide switch
for measurements across the room. Whether close up or at
a long distance, the 845 gives you exact readings in
seconds plus it can also log the data points for analysis.

Additional Features

Transfer data to your PC in user selectable timed
intervals for archiving, documenting and processing
data in real time or online. Software, USB cable and
tripod bracket are included with every instrument.

Transfer data to testo's IR printer for on-site
documentation with date and time (printer optional).

Features

Pinpoint laser sighting
Ambient air humidity measurements
(optional) with audible alarm
Record and store up to 90 readings
for trending analysis
Ultra fast scan capability (100 msec)
to survey any area quickly and
accurately (reference accuracy
±0.75°C)
Display temperature, min/max values,
alarm limits and emissivity
simultaneously on bright, backlit,
three line display
Easily interface with PC via USB
cable and data management software

Technical Data

Measuring range:	-30 to 1750°F (-35 to +950°C)
Humidity module:	0 to 100 %RH 32 to 122°F (0 to +50°C) -4 to 122°F (-20 to +50°C td)
Contact temp. range:	-30 to 1750°F (-35 to +950°C)
Spectral range:	8 to 14 µm
Accuracy °C IR (at +23°C):	±2.5°C (-35 to -20.1°C)
± 1 digit:	±1.5°C (-20 to +19.9°C) ±0.75°C (+20 to +99.9°C) ±0.75 % of m.v. (+100 to +950°C)
Accuracy °C contact (Type K):	±0.75°C (-35 to +75°C)
± 1 digit:	±1 % of m.v. (75.1 to +950°C)
Accuracy humidity module:	±2 % RH (2 to 98 %RH)
± 1 digit:	±0.5°C (+10 to +40°C) (50 to 104°F) ±1°C (remaining range)
Resolution:	0.1°C (°C-measurement parameters) 0.1 % RH (humidity) 0.1°Ctd (dewpoint)
Emissivity:	Adjustable 0.1 to 1.0
Optical resolution:	Far field: 75:1 (16 mm, distance 1200 mm) (7" @ 4ft.) Close focus: 1 mm, distance 70 mm (spot @ 3")
Measuring rate:	t 95: 150 msec Scanning Max/Min/Alarm: 100 msec

Specifications

Housing material:	ABS black/grey, metal cover
Instrument:	155 x 58 x 195 mm (6" x 2" x 8")
Weight:	465 g (1 lb)
Case (included):	405 x 340 x 93 mm (16" x 13" x 4")
Power supply:	2 x AA AIMn or via USB
Battery life:	25h (w/o laser); 10h (with laser w/o backlight); 5h (with laser and 50% backlight)
Operating temperature:	-20 to +50°C (-4 to 122°F)
Storage temperature:	-40 to +70°C (-40 to 158°F)
Warranty:	2 years

Ordering Information

845 – IR thermometer with laser sighting and switchable optics including:
with PC software, USB cable, tripod mounting bracket, carry case and wrist strap, battery and calibration certificate	0563 8450
with humidity probe	0563 8451

Accessories	Part #
Humidity module (for retrofit)	0636 9784
External charger (4 Ni-MH rechargeable batteries) with integrated international plug (100-240 VAC, 300 mA, 50/60 Hz)	0554 0610
Surface temperature probe with spring thermocouple, for uneven surfaces, short-term up to +500°C, TC Type K	0602 0393
Air probe, TC Type K	0602 1793
IR printer (incl. 1 roll of paper and 4 AA batteries)	0554 0547
Spare printer paper (6 rolls)	0554 0569

Data Sheet
– (161 KB) PDF