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testo 835 |
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Infrarotund Kontaktthermometer |
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Infrared and contact thermometer |
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Thermomètre infrarouge et à contact |
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Termómetro de contacto e infrarrojo |
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Termometro a infrarossi e a contatto |
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Infrarooden contactthermometer |
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Инфракрасный термометр |
Bedienungsanleitung |
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Instruction manual |
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Mode d’emploi |
fr |
Manual de instrucciones |
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Manuale di istruzioni |
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Handleiding |
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Руководство пользователя |
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1. General information
1. General information 13
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Please read this document through carefully and familiarise yourself with the operation of the product before using it. Keep this documentation to hand so that you can refer to it when necessary.
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2. Safety information
Avoid electrical hazards:
Do not conduct measurements on or near live parts!
Adhere to the product safety/warranty requirements:
Always operate the instrument properly and according to its intended purpose and within the parameters specified. Do not use force.
Do not store with solvents (e.g. acetone).
Only open the instrument if this is expressly described in the documentation for the purpose of maintenance or repair work.
Ensure correct disposal:
Dispose of defective rechargeable batteries and spent batteries at the collection points provided.
Send the instrument directly to us at the end of its life cycle. We will ensure that it is disposed of in an environmentally friendly manner.
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3. Intended use
The testo 835 is a compact infrared thermometer for non-contact measurement of surface temperatures. When a probe is connected, a contact measurement can also be carried out. The H2 version also has an integrated humidity probe for measuring ambient humidity.
The product should not be used in the following areas:
·Potentially explosive areas
·For diagnostic measurements in the medical sector
14 4. Techical data
4. Technical data
Feature |
Values |
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Infrared measurement |
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Lens |
50:1 + opening diameter of the sensor (24 mm /0.95”) |
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Spectral range |
8 to 14 μm |
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Laser type |
4 point laser |
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Output / wavelength |
< 1 mW / 8 to 14 μm |
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Class / standard |
2 / EN 60825 1:2007 |
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Measuring range |
T1 / H1: 30 to +600 °C / 22 to +1112 °F |
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T2: |
10 to +1500 °C / 14 to +2732 °F |
Resolution |
0.1°C/°F |
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Accuracy |
T1 / H1: ±2.5 °C / ±4.5 °F ( 30.0 to 20.1 °C / 22.0 to 4.1 °F) |
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(at +23 °C / 73.4 °F, |
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±1.5 °C / ±2.7 °F( 20.0 to 0.1 °C / 4.0 to 31.8 °F) |
±1 digit) |
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±1.0 °C/ ±1.8 °F (0.0 to +99.9 °C / 32.0 to +211.9 °F) |
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T2: |
±1 % of the measuring value (remaining range) |
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±2.0 °C / ±3.6 °F or ±1 % of the measuring value |
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(the higher value applies) |
Measuring rate |
0.5 s |
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Contact measurement |
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Sensor type |
Thermocouple type K (connectable) |
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Measuring range |
T1 / H1: 50 to +600 °C / 58 to +1112 °F |
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T2: |
50 to +1000 °C/ 58 to +1832 °F |
Resolution |
0.1 °C/°F |
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Accuracy (±1 digit) |
± (0.5 °C / 0.9 °F + 0.5 % of the measuring value) |
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Measuring rate |
0.5 s |
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Humidity measurement (only H1) |
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Measuring range |
0 to 100 % RH (at 20 to +50 °C) / 4 to +122 °F) |
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Resolution |
0.1 %RH (humidity) |
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0.1 °C/°F (temperature) |
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0.1 °C td/°F td (dew point temperature) |
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Accuracy (±1 digit) |
± 2 %RH |
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± 0.5 °C/ 0.9 °F |
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Measuring rate |
0.5 s |
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General |
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Operating temperature |
20 to +50 °C / 4 to 122 °F |
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Transportation/storage |
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temperature |
30 to +50 °C / 22.0 to 122 °F |
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Voltage supply |
3 x battery type AA or via USB port (only in conjunction with EasyClimate software) |
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Battery life |
25 h (typical at 25 °C / 77 °F without laser and display illumination) |
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10 h (typical at 25 °C / 77 °F without display illumination) |
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Housing |
ABS/PC |
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Dimensions |
193 x 166 x 63 mm / 7.6 x 6.5 x 2.5” |
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Weight |
T1 / T2: 514 g / 1.13 lbs (incl. batteries) |
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H2: |
527 g / 1.16 lbs (incl. batteries) |
EC Directive |
2004/108/EC |
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Warranty |
2 years, warranty terms: see www.testo.com/warranty |
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5. Product description 15
5. Product description |
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1 |
Infrared sensor (IR) lens |
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2 |
4-point laser for measurement spot marking |
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3 |
Ambient humidity probe, ambient temperature probe (only H1) |
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4 |
Trigger (measurement, switching on) |
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Battery compartment |
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USB interface, probe connector socket for thermocouple probe (TC) |
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7 |
Control keys: |
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[ ]: Switch instrument on/off |
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[ ]: Save measuring values |
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[ ]: Open Emissivity menu |
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[Esc]: Back |
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[ ]: 5-way joystick (press , up , down , left , right ): Open |
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configuration menu, confirm entry, navigate |
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8 |
Display |
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