Handling instructions
Operating temperature...............................0 to +50 °C
Storage and transport temp. ..................-20 to +70 °C
Care and maintenance
The pressure probe is maintenance-free and is not
subject to a particular maintenance interval.
Clean the housing with a damp cloth.
Ordering data
Pressure sensor ±100 Pa ............................0638.1345
Pressure sensor ±10 hPa ............................0638.1445
Pressure sensor ±100 hPa ..........................0638.1545
Pressure probe 2bar abs.............................0638.1645
Magnetic holding fixture...............................0554.0225
Silicone hose ...............................................0554.0440
Warranty
Pressure probe
............................................
24 months
If the instrument is opened, improperly handled or
if force is applied, no warranty will be granted!
testo
0638.1445
testo
0638.1645
Probe
Meas.range
Zero t.c. value
Accuracy
Max.
during long-term meas. *
overload
0638.1345
± 100 Pa
± (0.3 Pa + 0.5% of m.v.) 100 hPa
0638.1445
±10 hPa
type 0.3% of f.v./°C
± 3 Pa
50 hPa
in range >10°C to 50°C
type 1% of f.v./°C
in range 0°C to 10°C
0638.1545
± 100 hPa
type 0.1% of f.v./°C
± 10 Pa (0 to 20 hPa) 200 hPa
± 0.5% of m.v.
(20 to 100 hPa)
0638.1645
2 bar
type 0,05% of f.v./°C
± 5 hPa
3200 hPa
in range 0°C to 20°C
Strong detergents or solvents should
never be used for cleaning the measuring
probe! Make sure that no liquid gets into the connec-
tion nipple!
0973.2710/0402/T/wh/13.04.2004
Technical data
* unimportend if constant tempered and
reset before each measurement.
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