Operation; Warranty - Testo 535 Bedienungsanleitung

2 line display
Hold/Max/Min
MEAN button
START/STOP
Probe holder
ON/OFF
used with
button
accessory set
Screw-off
0554.0550
battery
PRINT button
compart-
Measuring instruments
ment
EN 50 081-1 + EN 50 082-1
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
2
the 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.
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
conform with
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
(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: 2 channel infrared
absorption principle
Measuring range: 0 to 9,999 ppm CO
(0 to 0,999 vol.% CO
Accuracy: 0 to 5000 ppm:
(at room ± (50 ppm +2 % of m.v.)
temperature) 5000 to 9,999 ppm:
±(100 ppm +3 % of m.v.)
Resolution: 1 ppm or 0.001 vol.%
Ambient
temperature: 0 to +50°C
Storage temp.: -20 to +50 °C
Battery lifetime: >4h (9 V block, Al-Mn)
Switchover: ppm / vol. %
Display: LCD (11 mm digit height)
Housing: ABS
Dimensions: 190 x 57 x 42 mm
Weight: Approx. 300 g
Ambient humidity: 0 to 99 %RH
not subjected to
condensation

Warranty

testo 535 meas. instr. ..............2 years
Probe ........................................1 year
2
Temperature coefficient: ±0,4% of m.v./°C
Changing the settings - Configuration
"START/STOP" button: keep pressed when switching on.
The following settings can be changed:
Auto ON
Auto-OFF
function
activated
Auto OFF
Auto-OFF
function
not activated
,
type 9V
Pressure compensation
Please note that the CO
This effect is compensated in the instrument. To do this, enter the correct air pressure (See
Changing the settings - Configuration). The air pressure depends on the height of the location above
mean sea level (See the "Barometric height formula" table on the next page) and weather
influences.
Example:
You are located at a height of 800 m above sea level where you have a mean annual air pressure of
920 hPa. According to the barometer (1003 hPa) and the height correction of the barometer (to 1013
hPa) the mean annual air pressure has to be reduced by 10 (910 hPa air pressure).
2
)
2
Memory function for current, maximum and minimum values
The following displays appear when this button is pressed again and again:
1st press: HOLD -
2nd press: MAX - Displays saved max. values
3rd press: MIN -
4th press: MEAN -
5th press: MEAN -
6th press: MEAN-
Important note:
The min/max values are measured from the time the instrument is switched on. The values are reset
if the instrument is switched off and then on again.
Printout
A printout of the reading with date and time can be activated by pressing the PRINT button.
The max, min and mean values also appear on the printout of a multi-point or timed mean
calculation. If a reading was frozen at a certain point in the display via the HOLD button, this
reading appears in the printout with the time and date when the reading was frozen.
Time
Date
01:01
00:00
BAT
1998
Battery in
instrument
Next
Next
position position
01:01
ACCU
00:00
1998
Rechargeable
battery in
instrument
Set Set
value value
reading depends on the absolute air pressure.
2
Readings are frozen in display
Displays saved min. values
Multi-point mean calculation
Timed mean calculation
Return to measuring mode
3
Air pressure
1013
ppm
hPa
Next
position
Meas-
uring
1013
mode
Vol%
hPa
Set
value