testo 925
is a simple to clean, rugged and easy-
to-use temperature measuring instrument with a
measuring range of
-60 °C to +1000 ° C (-75 °F to +1830 °F).
The different probes enable the instrument to be
used for a variety of different
applications.
Insert probe
Observe ppolarization!
Switch on the instrument.
A short display and seg-
ment test follows.
The measuring instrument
is now operational.
Measured values can be held in display by
pressing the HOLD key.
Should the ambient temperature change (e.g.
place of measurement is altered - indoor/out-
door measurements), the measuring instrument
requires several minutes to adapt.
testo 9925
enables the user to measure in °C or
in °F. A small switch is situated on the left next to
the battery contacts.
Move the
switch as required.
Should
"Bat" flash in the display, the
battery has a remaining life of approx.
10 hours. Should
"Bat" be displayed
permanently, the battery should be replaced wit-
hin 1-2 hours. The instrument switches off auto-
matically when the battery voltage is too
low.Remove the old battery and replace with the
new type 9V (IEC 6 F 22) battery (observe pola-
Please rread bbefore
using iinstrument!
Do not measure on live parts!
Observe the measuring range of the
sensor! Overheating will destroy the probe!
Observe permissible storage, transport and
operating temperatures (e.g. protect measuring
instrument from direct sunlight).
Avoid applications in aggressive acids or
solutions.
If the instrument is opened, improperly handled
or if force is applied, no
warranty will be granted!
rization).
testo 925-2
Thermometer
Instruction m
manual
testo
¡C - ¡F
testo
®
925
HOLD
I
0
¡
C
¡
F
Probe
Display
HOLD
key
Probe handle with
guide rail
ON/OFF key
Guide rail for probe
Battery
compartment
Probe input
Safety iinstructions
Description
Typ
+
-
When removing the plug, never
pull on the lead!
Instructions oof uuse
I
0
¡
C
¡
F
Hold
Bat
¡
C
¡
F
Hold
Bat
The instrument switches off
automatically after 14 mins (except
when HOLD is activated).
Auto O
Off ffunction
°
C // °°F cconversion
¡F
C
Battery rreplacement
Bat
Technical ddata - iinstrument
Sensor:
......................NiCr-NiAl (plug-in thermo-
couple connection type K)
Measuring rrange:
.....-60 to +1000 °C
(-75 to +1830 °F)
Accuracy:
..................±1 °C/±1.8 °F ± 0.5 % of mv.
(-40 to +900 °C/
-40 to +1650 °F)
± 2 °C/±3.6 °F, ± 1 % of m.v.
(remaining range)
Resolution:
...............0.1 °C / 1 °C (0.1 °F/1 °F)
automatic conversion of
resolution from 0.1 °C/°F
to 1 °C(1 °F) from +200°C
(+390 °F)
Battery llife:
...............> 100 h (alcali-mang.)
Low battery display
Switches off automatically
(Auto OFF) after 14 min.
Operating ttemp.:
........0 to +40 °C
(+32 to +100 °F)
Storage/transport
temp.
.........................-20 to +70 °C
(-4 to +155 °F)
Housing m
material
......ABS
Ordering ddata - iinstrument
Description .........................................Part no.
Temperature m
measuring iinstrument
testo 9925
TÜV approved
..................0560.9252
battery, intruction manual
9 VV rrechargeable bbattery
..................0515.0025
Charger
.............................................0554.0025
for the external charge of rech. batteries
testo 9925 iinstrument
........................24 months
Probes
..............................................12 months
If tthe iinstrument iis oopened, iimproperly
handled oor iif fforce iis aapplied, nno w
warranty w
will bbe
granted!
Warranty
TTeessttoo
G
Gm
mbbH
H && C
Coo..
Postfach 1140, D-79849 Lenzkirch
Telefon (0 76 53) 6 81 - 0, Ttx (7)76 53 10=ELRO,
Telex 7 72 23 34 elro d, Telefax (0 76 53) 68 11 00
HOLD
Description .........................................Part no.
Measuring range, t
99
Flue ggas pprobe
TÜV approved ........0602.9492
-60 to +500 °C (t
98
),(-75 to +930 °F),60 sec.
Flue ggas pprobe
TÜV approved ........0601.0092
-60 to +500 °C (t
98
),(-75 to +930 °F), 60 sec.
Thermocouple
for flue gas probe ...............................0430.0060
For m
more iinformation gget yyour ffree ttesto 9925
brochure.
Probes
The thermocouple (T) should be positioned in such a way that it is visible the probe tube
windows (F).
The thermocouple must always be located directly in the flue gas flow. It should not be
covered by one of the 3 bars in the probe tube.
Handling iinstructions
Attention!
Avoid contact with the metal pipe during
measurements.
