TESTO 454 - Page 38

testo
10Technical data
10.4 Probes
38
20) Pitot tubes in various lengths, diameters and
materials, for velocity measurement (in connection with
diff. pressure probe)
testo
0638.1445
Pressure probes
Measuring
range
±100 hPa
±10 hPa
2 bar
Material
Brass
Brass
Stainless
steel
Accuracy
±0.1 hPa (0 to 20 hPa)
±0.5 % v. Mw. (20 to 100 hPa)
±0,03 hPa
±5 hPa
Length ø
500 mm 7 mm
350 mm 7 mm
300 mm 4 mm
Measuring
system
Differential
pressure
Diff. pressure
Abs. pressure
Temp.
max
350 °C
350 °C
500 °C
a)
b)
c)
a)
b)
c)
Absolute pressure probe c) for measuring abs. pressure
19) Differential pressure probes a) and b) for measuring
velocity (in connection with Pitot tube)
and differential pressure
Ø Pitot tube connection 5 mm
testoterm
16) High temperature humidity probe, for measurement
e.g. in channels or bulk material
testo
17) Flexible humidity probe for
measurement in
inaccessible places
18) Pressure-proof humidity probe for measurements
in compressed air plants, with standard plug
testo
term
15) Air probe for humidity and temperature measurements
Humidity probes
Measuring
range
0 to 100 %RH
(Probe tip)
-20 to +70 °C
0 to 100 %RH
-20 to +140 °C
0 to 100 %RH
-20 to +140 °C
0 to 100 %RH
Pressure dew
point t
pd
:
-50 to +40 °C
t
90
(s)
10
20
20
ø
21 mm
Probe
pipe
12 mm
Tip
12 mm
Length
Total
length
245 mm
Probe
pipe
300 mm
Probe
pipe
1500 mm
Total length 300 mm
Connection via
standard plug
Sensor
Capacitive
NTC
Capacitive
NTC
Capacitive
NTC
Capacitive
NTC
Spare sensors: % RH 0420.0019 / °C 0420.1243
Spare sensors: % RH 0420.0023 / °C 0420.1242
Spare sensors: %RH 0420.0023 / °C 0420.1242
Spare sensors: % RH 0420.0023 / °C 0420.1242
System accuracy for 15) - 18): ±2 %RH(2 to 98 %RH) ±0.4 °C (0 to 50 °C) ±0.5 °C (remaining range)