Senseca PRO 915-2 handleiding
Handleiding
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PRO 915-2 – Differential manometer / Thermometer
Page 19 of 30
7 Measurement basics
7.1 Pressure measurement
The instrument internal pressure sensor detects the difference between the pressure applied
to the "+" input and the pressure applied to the "-" input.
Before taking the measurement, check the need to perform zeroing by leaving the pressure
inputs open (see next chapter for measurement adjustment).
By connecting only the "+" input and leaving the "–" input open, the pressure difference from
the ambient pressure (relative pressure) can be measured.
Caution!
• Do not exceed the maximum overpressure specified, the sensor may be damaged.
• The sensor is suitable for measurement in air and non-aggressive dry gases: do not use for
measurement in corrosive gases.
• Avoid performing measurements in the presence of high-frequency sources, microwaves
or strong magnetic fields.
• Connect the hoses to the instrument without forcing or bending the pressure ports.
7.2 Velocity measurement
By connecting a Pitot tube to the instrument, the velocity of an air flow can be measured.
The instrument calculates the velocity by measuring the dynamic pressure due to air flow, i.e.,
the difference between the pressure at the front inlet (total pressure P
T
)and that detected by
the side holes (pressure under static conditions P
s
). Connect the Pitot tube to the instrument
respecting the polarity shown in the figure below.
The upper segment of the tube should be kept parallel to the incident airflow.
Set the tube coefficient value in the Velocity → Pitot coefficient menu. The default value is 1.
If the Pitot tube is equipped with a K thermocouple temperature sensor, connect the sensor
to the temperature input of the instrument. If the tube does not have a temperature sensor, a
separate temperature probe can be used. If the temperature input is left open, the instrument
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Productinformatie
| Merk | Senseca |
| Model | PRO 915-2 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6427 MB |
