testo 845 - Infrared temperature measuring instrument

Order-Nr.  0563 8450

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

  • Instrument memory for 90 measurement protocols

  • Visual and acoustic alarm if limit values exceeded

  • Additional measurements can be carried out by attaching the temperature probe

Measuring surface temperatures precisely with really small diameters at short and long distances? No problem, with the testo 845 infrared thermometer. Switchable optics for far-field and near-field measurement (close-focus) makes this possible.

Product Description

For the first time, surface temperatures with the smallest diameters can be measured accurately, at short and long distances. The switchable optics for far-field and close focus measurement make this possible. Measurements in the far-field are made with an optical resolution of 75:1. Surface temperatures can thus be measured accurately, even at greater distances from the object to be measured. At a distance of 1.2 m from the object, the measurement point diameter is only 16 mm. A cross laser marks the measurement point exactly.
For measurements at a small distance from the object to be measured, the close focus optics provide a measurement point diameter of only 1 mm, at a distance of 70 mm! Two laser points mark the measurement point.

 

Delivery Scope

testo 845 infrared temperature measuring instrument, including case, calibration protocol, batteries, USB data cable, and PC software
Temperature - Type K TC

Measuring range

-31.0° to 1742.0 °F / -35 to +950 °C

Accuracy

±1.40 °F (-31.0° to 167.0 °F) / ±0.75 °C (-35 to +75 °C)

±1.0 % of mv (167.2° to 1742.0 °F) / ±1 % of mv (+75.1 to +950 °C)

Resolution

0.1 °F / 0.1 °C

Temperature - Infrared

Measuring range

-31.0° to 1742.0 °F / -35 to +950 °C

Accuracy

±4.5 °F (-31.0° to -4.2 °F) / ±2.5 °C (-35 to -20.1 °C)

±2.7 °F (-4.0° to 67.8 °F) / ±1.5 °C (-20 to +19.9 °C)

±1.40 °F (68.0° to 211.8 °F) / ±0.75 °C (+20 to +99.9 °C)

±0.75 % of mv (212.0° to 1742.0 °F) / ±0.75 % of mv (+100 to +950 °C)

Infrared resolution

0.1 °F / 0.1 °C

General technical data

Dimensions

6 x 2 x 8 in. / 155 x 58 x 195 mm

Operating temperature

-4.0° to 122.0 °F / -20 to +50 °C

Housing

black/gray, metal screen

Measuring rate

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

Optical resolution far field

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

Optical resolution close focus

1 mm @ 70 mm (90%)

Battery type

2 AA

Battery life

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

Storage temperature

-40.0° to 158.0 °F / -40 to +70 °C

Weight

16 oz. / 465 g

Air Probes

Temperature - Type K TC

Measuring range

-76.0° to 752.0 °F / -60 to +400 °C

Accuracy

Class 2 ¹⁾

Reaction time

200 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Food Probe

Temperature - Type K TC

Measuring range

-76.0° to 752.0 °F / -60 to +400 °C

Accuracy

Class 2 ²⁾

Reaction time

7 sec

2) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Temperature - Type K TC

Measuring range

-58.0° to 446.0 °F / -50 to +230 °C

Accuracy

Class 1 ²⁾

Reaction time

15 sec

2) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Immersion / Penetration Probe

Temperature - Type K TC

Measuring range

-76.0° to 1832.0 °F / -60 to +1000 °C

Accuracy

Class 1 ¹⁾

Reaction time

2 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Temperature - Type K TC

Measuring range

-76.0° to 752.0 °F / -60 to +400 °C

Accuracy

Class 2 ¹⁾

Reaction time

7 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-76.0° to 1472.0 °F / -60 to +800 °C

Accuracy

Class 1 ¹⁾

Reaction time

3 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Temperature - Type K TC

Measuring range

-328.0° to 2372.0 °F / -200 to +1300 °C

Accuracy

Class 1 ¹⁾

Reaction time

4 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Temperature - Type K TC

Measuring range

-328.0° to 1832.0 °F / -200 to +1000 °C

Accuracy

Class 1 ¹⁾

Reaction time

5 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K)

Immersion tip, flexible

Order Number: 0602 5793

Temperature - Type K TC

Measuring range

-328.0° to 104.0 °F / -200 to +40 °C

Class 3 ¹⁾

Reaction time

5 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K), Class 2 to -40 to +1200 °C (Type K), Class 3 to -200 to +40 °C (Type K).

Surface probes

Temperature - Type K TC

Measuring range

-76.0° to 266.0 °F / -60 to +130 °C

Accuracy

Class 2 ²⁾

Reaction time

5 sec

2) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-76.0° to 572.0 °F / -60 to +300 °C

Accuracy

Class 2 ¹⁾

Reaction time

3 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-76.0° to 1832.0 °F / -60 to +1000 °C

Accuracy

Class 1 ¹⁾

Reaction time

20 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K)

Temperature - Type K TC

Measuring range

-76.0° to 572.0 °F / -60 to +300 °C

hort-term to 932.0°°F / hort-term to 500°C

Accuracy

Class 2 ¹⁾

Reaction time

3 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-76.0° to 752.0 °F / -60 to +400 °C

Accuracy

Class 2 ¹⁾

Reaction time

30 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-58.0° to 482.0 °F / -50 to +250 °C

Accuracy

Class 2 ¹⁾

Reaction time

t99 = 3 sec (t3)

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-76.0° to 266.0 °F / -60 to +130 °C

Accuracy

Class 2 ¹⁾

Reaction time

5 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-58.0° to 212.0 °F , short-term up to +130 °C / -50 to +100 °C , short-term up to +130 °C

Accuracy

Class 2 ¹⁾

Reaction time

5 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-58.0° to 338.0 °F / -50 to +170 °C

Accuracy

Class 2 ¹⁾

Reaction time

150 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Magnetic probe (TC Type K)

Order Number: 0602 4892

Temperature - Type K TC

Measuring range

-58.0° to 752.0 °F / -50 to +400 °C

Accuracy

Class 2 ¹⁾

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

Temperature - Type K TC

Measuring range

-58.0° to 248.0 °F / -50 to +120 °C

Accuracy

Class 1 ¹⁾

Reaction time

90 sec

1) According to standard EN 60584-2, the accuracy of Class 1 refers to -40 to +1000 °C (Type K)

Thermocouples

Temperature - Type K TC

Measuring range

-58° to 752 °F / -50.0 to +400.0 °C

Accuracy

Class 2 ¹⁾

Reaction time

5 sec

1) According to standard EN 60584-2, the accuracy of Class 2 refers to -40 to +1200 °C.

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