HD2114P/HD2134P
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V2.3
THE
PROBES
The HD2114P.0 and HD2114P.2 instruments are fitted with a 20mbar differential pressure
sensor compared to an atmosphere, the HD2134P.0 and HD2134P.2 models have a 200mbar
sensor.
Any type of Pitot tube with relevant thermocouple K can be connected to the instruments to
measure the incident wind speed and calculated flow rate.
In standard temperature and atmospheric pressure conditions, the HD2114P.0 and HD2114P.2
measures speeds up to
55m/s
, the HD2134P.0 and HD2134P.2 up to
180m/s
. All models measure
air temperature through the thermocouple K.
The measurement provided by the instruments are:
•
Pv differential pressure
•
wind speed
•
calculated flow rate
•
air temperature detected by the thermocouple.
To choose the instantaneous value unit of measurement, press UNIT/DuctCALC.
•
for differential pressure: Pa, mbar, mmH
2
O and PSI
•
for wind speed: m/s, Km/h, ft/min, mph and knots
•
for flow rate: l/s, m
3
/h and ft
3
/min
•
for temperature: °C and °F;
Satic pressure holes
Total pressure holes
Static pressure
Speed pressure
Total pressure
The pressure inside the duct is the result of three different pressures:
1) atmospheric pressure (barometric B)
2) static pressure Ps
3) dynamic pressure Pv caused by the not-nil wind speed inside the duct.
