- -
56
AP472
S1,
AP472
S2
AND
AP472
S4
V
ANE PROBES FOR AIR VELOCITY MEASUREMENT EQUIPPED WITH
SICRAM
MODULE
AP472 S1, S2 and S4 vane probes are to be connected to DO9847 multifunction instrument. The
are used to measure velocity and flow of an incident air flow. AP472 S1, AP472 S4LT and AP472
S4HT probes can measure temperature also by means of a thermocouple type K. On request they
are equipped with a telescopic shaft to make measurements easier in hard-to-reach areas (i.e.: duct
outlets and vents). The table below shows velocity and temperature ranges of these probes:
Speed (m/s)
Temperature
(°C)
Temperature
sensor
Diameter
(mm)
AP472 S1
0.6…30 -25…+80
Thermocouple
K
100
AP472 S2
0.3…20
-25…+80
(working tem-
perature)
---- 60
AP472 S4L
0.8…20
-25…+80
(working tem-
perature)
---- 16
AP472 S4LT
(on request)
0.8…20 -30…+120
(*)
Thermocouple
K
16
AP472 S4H
10…50
-25…+80
(working tem-
perature)
---- 16
AP472 S4HT
(on request)
10…50 -30…+120
(*)
Thermocouple
K
16
(*) Temperature limit refers to the probe where the vane and temperature sensor are located and not to the handle, the
cable and telescopic shaft which maximum working temperature is 80°C.
Bigger diameters are suitable for measurements in turbulent flows having a low-medium air veloc-
ity (i.e. in front of pipes). Smaller diameters are suitable for applications where the body of the
probe has to be much smaller than the cross section of the duct where measurements have to be car-
ried out (i.e.: air ducts).
Calibrations
AP472 S1, S2 and S4 probes are factory calibrated and do not require any calibration by users.
Operation
Slide the telescopic shaft as much as necessary and take care that the cable can pass through the
tube without any problem.
Position the probe in the air flow to be measured and hold the vane axis parallel to the stream, as
indicated in the following figure.
