Operation - testo 826-T2 Bedienungsanleitung

testo 826-T2 (0563 8282)
testo 826-T4 (0563 8284)
Instruction manual
IR sensor
IR sensor
Display
Display
Switch on, hold
Switch on, hold
measurement
measurement
value
value
Temp. display IR
measurement
Temp. display IR
Temp. display
measurement
penetration
probe, switch off
Switch off
Battery compartment
Battery compartment
Penetration probe
Measuring instrument complies with 2014/30/EC. The instruments were tested in the frequency range 27-1000 MHz.
In the case of strong HF fields, the specific parameters cannot be guaranteed.
0973 8262 de en es fr it pt nl sv 07
Intended use
The testo 826 is a compact infrared thermometer for non-contact
measurement of surface temperatures. With the testo 826-T4,
contact measurements (core temperature measurements) can
also be carried out via the integrated penetration probe.
Not suitable for diagnostic measurements in the medical
sector!
Technical data
Feature testo 826-T2 testo 826-T4
Measurement parameter °C / °F
Measurement range IR -50 to +300°C / -58°F to +572°F
Resolution IR 0.1°C / 0.1°F
Accuracy IR ±1.5°C (-20 to 100°C) / ±2.7°F (-4 to 212°F);
1
(at 23°C) ± 1 digit ±2°C / ±3.5°F or 2% of meas. val (rest of range)
Emission factor adjustable from 0.10 to 1.00
Meas. rate IR 0.5 s
Lens (90% value) 6:1 + opening diameter of sensor (12 mm)
Laser type single laser (T2/T4)
Output/wavelength < 1 mW / 645 to 660 nm
Class/standard 2 / DIN EN 60825-1:2001-11
Temperature sensor - NTC
Meas. range of temp. sensor - -50 to +230°C / -58 to +446°F
Resolution of temp. sensor - 0.1°C / 0.1°F
Accuracy of temp. sensor - ±0.5°C (-20 to +99.9°C) /
(at 22°C) ± 1 digit ±0.9°F (-4 to +212°F);
±1°C / ±1.8°F or ±1% of meas. val.
(rest of range) 1
Meas. rate of temp. sensor - 1.25 s
Operating temperature 826-T2/T4: -20 to +50°C / -40 to +122°F
Transportation / storage temperature -30 to +50°C / -22 to +122°F
Voltage supply 826-T2/T4: 2x AAA batteries
Battery life approx. 100 h approx. 15 h
Housing ABS (white)
Dimensions in mm (WxHxL) 33 x 162 x 19
CE guideline 2014/30/EC
Warranty 2 years
1 whichever value is the greater
General information
Please read this document through carefully and familiarise your-
self with the operation of the product before using it. Keep this
documentation to hand so that you can refer to it when
necessary.
Safety information
en
Avoid electrical hazards:
Contact measurement: Do not conduct measurements on or
near live parts.
Infrared measurement: observe the required safe distances
when measuring live parts.
Preserving product safety / warranty claims:
Operate the instrument properly and according to its intended
purpose and within the parameters specified. Do not use
force.
Do not expose the product to electromagnetic radiation (e. g.
microwaves, induction heating), static buildup, heat or strong
temperature fluctuations.
Do not store with solvents (e. g. acetone).
Only open the instrument if this is expressly described in the
documentation for maintenance purposes.
Laser radiation!
Do not look into the laser beam.
Ensure correct disposal:
Dispose of defective rechargeable batteries and spent batter-
ies 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.
The following product components are designed for continuous contact with
foodstuffs in accordance with Regulation (EC) 1935/2004: from the tip of the
measuring probe up to 1 cm before the probe handle or the plastic housing.
If provided, the information about penetration depths in the instruction man-
ual or the mark(s) on the measuring probe should be noted.
With TopSafe, the testo 826-T4 complies with the guidelines in accordance with standard
EN 13485.
Suitability: S, T (storage, transportation), environment: E (transportable thermometer),
accuracy class: 0.5, measurement range: -50 to +230 °C
According to EN 13485, the measuring instrument should be checked and calibrated reg-
ularly under the terms of EN 13486 (recommended frequency: yearly). Contact us for more
information.
Accessories
Description
TopSafe, degree of protection (TopSafe closed, sealing edges lubricated): IP67
Wall bracket incl. protection cap for penetration probe
Frozen food drill
Initial operation
Insert battery: see Chapter Replacing the battery.

Operation

Switching on / off
Switch on the instrument: press .
- All display segments light up briefly. The instrument switches to
the infrared measurement view ( lights up).
Switch off the instrument: press and hold down
display goes out.
The instrument switches off automatically after 1 min (IR measure-
ment view) or 10 mins (contact measurement view, only
testo 826-T4) without the button being pressed.
Measurement options
Observe information on infrared measurement / contact meas-
urement (see chapter below).
With IR measurement, the min./max. values are reset by press-
ing the measurement button, and with contact measurement,
this is done when the instrument is switched off or when you
switch to the IR measurement view.
- The instrument is switched on.
IR measurement
1 Start measurement: hold down
2 Aim at and lock in on the measuring object with the laser dot:
laser marks the centre point of the measurement spot.
- The current measurement value is displayed.
3 End measurement: release the button.
- HOLD lights up. The last measurement value and min./max.
value are saved until the next measurement.
Switch between min.-, max.- and recorded value: press
Restart measurement: hold down
Contact measurement (only testo 826-T4)
1 Position the contact thermometer in the measuring object and
initiate the measurement: press
- The instrument switches to the contact measurement view
( lights up). The current measurement value is shown.
2 End measurement: press .
- HOLD lights up. The last measurement value and min./max.
value are saved until the next measurement.
Switch between min.-, max.- and recorded value: press
Restart measurement: press .
Back to infrared measurement view: press
Cleaning the instrument
Do not use aggressive cleaning agents or solvents!
Wipe down the housing with a damp cloth (with detergent).
Clean the lens carefully with a cotton bud dipped in water or
medical alcohol.
Questions and answers
Question Possible causes
Display light has stopped - Battery is low.
working
lights up. - Battery is dead.
Instrument does - Battery is dead.
not switch on
IR measurement view: - Measurement values outside
- - - lights up. the measurement range.
Article no.
Contact measurement view: - Measurement values outside
0516 8265
(only testo 826-T4) the measurement range.
- - - lights up.
0554 0825
0554 0826
If we could not answer your question, please contact your dealer
or Testo Customer Service.
Information on infrared (IR)
measurement
Measuring method
IR measurement is a visual measurement
Keep lenses clean.
Do not carry out measurement with foggy lenses.
Keep the measuring range (the range between the instrument
until the and the measuring object) free of obstacles. There must be no
particles of dust or dirt, no humidity (rain, steam) and no
gases.
Setting the emissivity
- The instrument is in the infrared measurement view.
If no button on the instrument is pressed for 3 s in emissivity
mode, the instrument switches to the infrared measurement
view.
1 Press and
2 Configuring the unit: press
- The instrument switches to IR measurement view.
Settings
.
- The instrument is switched off.
If no button is pressed for 3 s in settings mode, the instrument
switches to the next view.
The alarm function is only available for IR measurement. If the
set alarm values are exceeded/not reached, a visual and
acoustic alarm is output.
.
1 Press and
.
- The instrument switches to settings mode.
2 Set lower alarm value ( ALARM): press
ton down to go forward quickly.
.
3 Set lower alarm value ( ALARM): press
ton down to go forward quickly.
4 Set alarm function on - (on) / off (oFF): press
5 Set measurement parameter (°C or °F): press
- The instrument switches to IR measurement view.
Service and maintenance
.
Replacing the battery
.
1 Switch the instrument off.
2 Open the battery compartment: slide the top down.
3 Remove used battery and insert a new one. Observe the polarity!
4 Close the battery compartment.
IR measurement is a surface measurement
If there is dirt, dust, frost, etc. on the surface, only the outermost
layer is measured, i.e. the dirt.
For vacuum-packed food, do no measure at air pockets.
Where the values are critical, always measure separately with a
contact thermometer. Particularly in the food sector: measure
core temperature with penetration / immersion thermometer.
Adjustment time
Possible solution
If the ambient temperature changes (change of location, e.g.
Replace the battery.
measurement indoors/outdoors), the instrument must be allowed
to equalise for 15 minutes for infrared measurement.
Replace the battery.
Replace the battery.
Emissivity
Replace the battery.
Materials have various emissivities, i.e. they emit various amounts
of electromagnetic radiation. The emissivity of the instrument has
Keep to the permitted
measuring range. a default setting of 0.95. This is optimal for the measurement of
food, non-metals (paper, ceramic, gypsum, wood, paints and var-
nishes) and plastics.
Measurement spot, distance
Depending on the distance of the measuring instrument from the
measuring object, a specific measurement spot is recorded.
Measuring lens (ratio of distance : measurement spot)
Measurement spot diameter mm
ø12
ø28
100
Measuring distance mm
simultaneously.
or .
simultaneously.
or . Hold the but-
or . Hold the but-
or .
or .
ø95
ø45
200
500