Technical Data For The Compressed Air Bar Probe - TESTO 6448 Instruction Manual

3.3.2.

Technical data for the compressed air bar probe

The thermal mass flow sensor for the compressed air volume flow
measurement is independent of the process pressure and the
media temperature.
Sensor
Sensor material
Measurement
method
Accuracy
Measuring
dynamics
Response time
Measurement parameters
Flow velocity
Selectable units
Measuring range
Volumetric flow
Selectable units
Measuring range
Temperature
Selectable units
Measuring range
1
The measuring ranges refer to the standard volumetric flow as per DIN ISO 2533 (15 °C,
1013 mbar and 0% rel. humidity)
Thermal, glass-coated ceramic sensor
Calorimetric
For compressed air quality classes
(ISO 8573: particles to humidity to oil) 1-4-1:
±3% of meas. value, ±3% of final value
For compressed air quality classes
(ISO 8573: particles to humidity to oil) 3-4-4:
±6% of meas. value, ±6% of final value
1:150 or 1:300
〈0.1 s (where damping parameter = 0), can
be delayed via user menu (0 to 1 s)
m/s
1
160 m/s
m³/h, m³/min, m³
1
The measuring range of the volumetric flow
depends on the inner pipe diameter
°C
0 to +60 °C / 32 °F ... +140 °F
3 Specifications
11