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845 Adjustable focus IR Thermometer


Price starts at $1,080.00

Product Code : 0563 8450

Manufacturer : Testo

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Download or View this product's / series details and specifications Specifications (PDF)

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).
  • 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
  • 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 mse
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