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testo 845 - Infrared temperature measuring instrument with integrated humidity module

Order-Nr.  0563 8451

  • testo 845
  • testo 845
  • testo 845
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  • Switchable optics for far-field (75:1) and close-focus (1 mm, distance 70 mm) measurements

  • Humidity module for determining surface moisture

  • Instrument memory for 90 measurement protocols

  • Visual and acoustic alarm if limit values exceeded

The testo 845 infrared thermometer enables non-contact measurement of the temperatures of a really wide range of surfaces. In addition, you can determine the ambient air humidity and the dew point distance with the integrated humidity module – and thus for instance detect mould at an early stage.

Details

Product Description

The temperature measuring instrument is ideally suited for non-contact measurement of surface temperatures, both at short and long distances. And surface moisture can also be assessed using the infrared thermometer, thanks to the integrated humidity module.

Areas of application for the testo 845 infrared thermometer with humidity module

Applications for building services / air conditioning technology:
  • Early detection of mould: fast scanning of walls using non-contact measurement to assess the room and wall conditions, discover thermal bridges and detect mould
  • Checking the temperature on ventilation ducts
  • Determining heat profiles and thermal insulation in buildings

Industrial applications:
  • Temperature measurement on switching cabinets, refrigeration units, generators and drives, along with plastics in drying processes

Applications in heating engineering:
  • Surface measurement on radiators, painted heating pipes
  • Measurement of floor coverings to locate heating pipes
 

The advantages of the testo 845 temperature measuring instrument with integrated humidity module

The infrared thermometer calculates the surface moisture from the surface temperature and dew point of the air. This means that ceilings and walls that are at risk of developing mould can be more quickly located.

Far-field measurement means that surface temperatures can be measured very precisely at a great distance from the measurement object. At a distance of 1.2 m from the measurement object, the measuring spot diameter is only 16 mm. Bright cross-laser marking is used to indicate the real measuring spot.
For measurements a short distance from the measurement object, the close-focus optics provide a measuring spot diameter of only 1 mm at a distance of 70 mm. In the process, two laser points mark the measuring spot.
In order to switch from far-field to near-field (close-focus) measurements, simply move the slide switch on the infrared temperature measuring instrument to the appropriate position.

As an option, you can carry out additional measurements, such as determining the emission level, via attached temperature probes (the probe socket is located underneath the handle) for an even more accurate measurement result.

Delivery Scope

testo 845 infrared temperature measuring instrument with integrated humidity module, including case, calibration protocol, batteries, USB data cable and PC software.

Technical Data

General technical data

Weight

465 g

Dimensions

155 x 58 x 195 mm

Operating temperature

-20 to +50 °C

Product-/housing material

black/gray, metal screen

Measuring rate

t95: 150 ms; Scanning Max/Min/Alarm: 100 ms

Optical resolution far field

75:1 16 mm @ 1200 mm (90%)

Optical resolution close focus

1 mm @ 70 mm (90%)

Battery type

2 AA mignon batteries

Battery life

25 h (without laser), 10 h (with laser without light), 5 h (with laser and 50% light)

Storage temperature

-40 to +70 °C
Temperature - TC Type K (NiCr-Ni)

Measuring range

-35 to +950 °C

Accuracy

±0.75 °C (-35 to +75 °C)

±1 % of mv (+75.1 to +950 °C)

Resolution

0.1 °C
Temperature - Infrared

Measuring range

-35 to +950 °C

Accuracy

±2.5 °C (-35 to -20.1 °C)

±1.5 °C (-20 to +19.9 °C)

±0.75 °C (+20 to +99.9 °C)

±0.75 % of mv (+100 to +950 °C)

Resolution

0.1 °C
Attachable humidity module - Capacitive

Measuring range

0 to +100 %RH

0 to +50 °C

-20 to +50 °Ctd

Accuracy

±2 %RH (2 to 98 %RH)

±0.5 °C (+10 to +40 °C)

±1 °C (Remaining Range)

Resolution

0.1 °Ctd / 0.1 %RH

Probes

Air probes

Cross-Seller Robuster Luftfühler, TE Typ K
Robust air temperature probe (TC type K) – measuring range: -60 to +400 °C

Order Number: 0602 1793

Food probes

Cross-Seller Wasserdichter Lebensmittelfühler aus Edelstahl (IP65)
Waterproof stainless steel food probe (TC type K) - measuring range: -60 to +400°C

Order Number: 0602 2292

Cross-Seller Wasserdichter Tauch-/Einstechfühler mit Metallschutzschlauch
Waterproof, robust immersion/penetration probe (TC type K) - measuring range: -50 to +230°C

Order Number: 0628 1292

Surface probes

Cross-Seller Spare meas. head for pipe wrap probe, TC Type K
Spare measuring head for pipe wrap probes (TC type K) - Measuring range: -60 to +130°C

Order Number: 0602 0092

Cross-Seller Fast-action surface probe with sprung thermocouple strip
Fast-action surface probe (TC type K) – measuring range -60 to +300 °C, short-term up to +500 °C

Order Number: 0602 0393

Cross-Seller Efficient, waterproof surface probe with small measurement head
Waterproof surface temperature probe with a small measuring head (TC type K) – measuring range: -60 °C to +1000 °C

Order Number: 0602 0693

Cross-Seller Fast-action surface probe with sprung thermocouple strip
Fast-action, angled surface temperature probe (TC type K) for flat and uneven surfaces – measuring range: -60 to +300 °C

Order Number: 0602 0993

Cross-Seller Waterproof surface probe with widened measurement tip
Waterproof surface temperature probe with widened measuring tip (TC type K) for flat surfaces – measuring range -60 to +400 °C

Order Number: 0602 1993

Cross-Seller Flat head surface probe with telescopic handle max. 680 mm
Surface temperature probe (TC Type K) with telescope

Order Number: 0602 2394

Cross-Seller Pipe wrap probe for pipe diameter 5 to 65 mm
Temperature probe (TC type K) with clamping bracket for measurements on pipes with Ø 5-65 mm – Measuring range -60 to +130°C, briefly up to +280°C

Order Number: 0602 4592

Cross-Seller Clamp probe for measurements on pipes
Clamp probe (TC type K) for temperature measurements on pipes with Ø 15-25 mm – Measuring range -50 to +100°C, briefly up to +130°C

Order Number: 0602 4692

Cross-Seller Magnetic probe (TC type K) - for surface temperatures
Surface temperature probe with magnet (TC type K), adhesive power 20 N – Measuring range -50 to +170°C

Order Number: 0602 4792

Cross-Seller Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten
Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C

Order Number: 0602 4892

Cross-Seller Pipe wrap probe with velcro strip
Temperature probe with Velcro (TC Type K)

Order Number: 0628 0020

Thermocouples

Cross-Seller Thermocouple with TC adapter, flexible, 800 mm long
Flexible thermoelectric couple (TC type K, glass fibre) – Measuring range: -50 to +400°C

Order Number: 0602 0644

immersion/ penetration probes

Cross-Seller Efficient and fast-action immersion probe, waterproof
Flexible, fast-action immersion probe (TC type K) – measuring range: -60 to +1000 °C

Order Number: 0602 0593

Cross-Seller Waterproof immersion/penetration probe, TC Type K
Waterproof immersion/penetration probe (TC type K) – measuring range -60 to +400 °C

Order Number: 0602 1293

Cross-Seller Fast-action, waterproof immersion/penetration probe
Fast-action immersion/penetration probe (TC type K) – measuring range: -60 to +800 °C

Order Number: 0602 2693

Cross-Seller Tauch-Messspitze, biegsam, TE Typ K
Immersion measuring tip with TC plug type K - for fast temperature measurements

Order Number: 0602 5792

Downloads

Product Brochures

Manuals

Software

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