Operation; Auto-Off Function; Changing The Battery; Warranty - TESTO 535 Instruction Manual

2 line display
Hold/Max/Min
MEAN button
START/STOP
ON/OFF
button
Screw-off
battery
compartment
Please read prior to operation
- Never measure on live parts
- Observe sensor measuring ranges!
Overheating may destroy probes.
- Observe storage and transport temperature as
well as the max. operating temperature
(e.g. protect measuring instrument from direct
sunlight).
- Inexpert handling or use of force cancel your
warranty claims!
- If there is a change in the ambient temperature
(change of location, e.g. inner/outer
temperature) the measuring instrument will
need an adaptation phase of several minutes.
- The CO probe contains optical components.
2
Please treat the probe like your camera.
Strong vibrationa may chenge the manufac-
turer´s calibration. Check the readings in
fresh air: 350 to 450 ppm. It is recommended
that the instrument is sent to a Testo service
point for adjustment purpose.
- The CO probe is permanently attached to the
2
measuring instrument. Probes can only be
changed at Testo service points.
- Ensure the probe does not come into frequent
contact with water otherwise the long-term
stability will be affected.
- If the level of high frequency is high, there may
be deviation from the required
characteristic in the frequency range from
40 to 1000 MHz.

Operation

Switch on instrument. After the
instrument is switched on a short
display and function test follows and
the sensor has a warm-up phase of approx. 30 s.
The instrument is then ready to operate. The
CO concentration in the sensor needs approx.
2
1 minute to adapt to ambient conditions. This
adaptation time can be shortened by swinging
the probe gently back and forth. If the probe is
subjected to condensation, this can lead to
uncreased mesured values.
Probe holder
used with
accessory set
0554.0550
PRINT button
Measuring instruments
conform with
EN 50 081-1 + EN 50 082-1
2
Mains connection (mains unit no. 0554.0088)
recommended for long-term measuring.
The probe should be held as far as
possible from your body so as to
eliminate the influences caused by the
CO in your breath.
2

Auto-Off function

If the Auto-Off function is activated
the instrument switches itself off auto-
matically after 10 minutes of inactivity
(except in the case of HOLD) and
timed mean calculation

Changing the battery

If "Bat" appears in the display, the
battery will last approx. 1 hour out of
a total lifetime of 4 hours, if referring
to an alkali-manganese battery. The
instrument will switch off automatically if there is
not enough power. Unscrew the battery
compartment, remove the used battery and put
,
in new battery type 9V (IEC 6 F 22). (Observe
polarisation). User settings remain intact if the
instrument is not longer than 3 minutes without
power.
Instructions for disposal:
Only empty batteries should be disposed. The
batteries should be placed in plastic bags to
prevent short-circuits.
Technical data - testo 535
Sensor:
Measuring range:
Accuracy:
(at 23 °C *)
Resolution:
Ambient
temperature:
Storage temp.:
Battery lifetime:
Switchover:
Display:
Housing:
Dimensions:
Weight:
Ambient humidity:

Warranty

testo 535 meas. instr. ...............2 years
Probe.........................................1 year
* Temp. coefficient: ± (1 ppm + 0,4 % of meas.) / °C
.
2 channel infrared
absorption principle
0 to 9,999 ppm CO
2
(0 to 0,999 vol.% CO
0 to 5000 ppm:
± (50 ppm +2 % of m.v.)
5000 to 9,999 ppm:
±(100 ppm +3 % of m.v.)
1 ppm or 0.001 vol.%
0 to +50°C
-20 to +50 °C
>4h (9 V block, Al-Mn)
ppm / vol. %
LCD (11 mm digit height)
ABS
190 x 57 x 42 mm
Approx. 300 g
0 to 99 %RH
not subjected to
condensation
)
2