- -
26
If Ps is lower than 2500 Pa (=25mbar), the term
Ps
100.000
100.000
+
can be disregarded as the error is of
approx. 1%.
AP473
S1
…
AP473
S4
M
ODULES
AP473 S1, …, AP473 S4 modules work as interfaces between the Pitot tube and the DO2003. Each
module can be connected to any Pitot tube with the related thermocouple type K, where provided.
With temperature and atmospheric pressure standard conditions, S1 has a 40m/s full scale, S2 a
55m/s full scale, S3 a 90m/s full scale and S4 a 130m/s full scale.
The modules of AP473 series are equipped with two pressure inputs to be connected to the Pitot
tube outputs and with an input for thermocouples type K.
The measurements provided by the modules are: air speed, differential pressure, air temperature
measured by a thermocouple and flow.
Press UNIT A to select the units of measurement of the displayed instant value:
•
for air speed: m/s, km/h, ft/min, mph
•
for differential pressure: Pa, mbar, mmH
2
O e inchW
•
for temperature: °C, °F
•
for flow: l/s, cfm, m
3
/h.
O
PERATION
Insert the SICRAM module connector into input A of the instrument; connect the Pitot tube outputs
(pressure and thermocouple) to the module.
Introduce the Pitot tube in the airstream to be measured, positioning the little rod at the bottom of
the tube parallel to the flow, as indicated in the following figure.
1
1
2
2
AP473 S...
Summary of Contents for DO2003
Page 2: ...2 HVACR Datalogger DO2003...
Page 20: ...20 MIN 350 MAX 1020 120 AP471 S4...
Page 58: ...58...