-
41
-
Ambient BP. (Ambient Pressure Sensor Calibration)
Prepare a standard "ambient pressure
gauge."
The ambient pressure measurement port
is built in the cooling air exhaust port on
the left side of the sampler unit.
When "2 Ambient BP." is selected and the
[ENTER] key is pressed, the current ambient
pressure is displayed with the adjustment
value of the previous calibration reset.
After matching the ambient pressure display to the readout value on the standard
pressure gauge by pressing the [UP] and [DOWN] keys, press the [ENTER] key.
Calibration input is accepted, and the screen returns to the Calibration menu.
*
After setting the numerical value, if the [MENU/ESCAPE] key is pressed before the
[ENTER] key is pressed, the screen will return to the Calibration menu without the
newly entered value being accepted.
*
The ambient pressure displayed here is displayed with the adjustment value of the
previous calibration reset. For this reason, the ambient pressure may differ from the
ambient pressure value displayed outside of the Calibration menu. Perform error
measurement for the ambient pressure measurement value in a different menu after
calibration.
* Calibrate the ambient pressure sensor before measuring the suction flow rate
error.
If the ambient pressure sensor is calibrated after the suction flow rate error is
measured, the instantaneous and total flow rate measurement values will be affected
by the ambient pressure measurement error.
Pressure Drop (Filter Pressure Loss Sensor Calibration)
Prepare a "standard pressure gauge" that is capable of measuring negative pressure
(gauge pressure) to a range of 0 to -50 kPa.
Also prepare a hose joint (optionally available) for attachment to the suction port, and
a manual vacuum pump (optionally available) for creating suction.
Attach a hose joint to the suction port. As shown in the figure, use the T-shaped
adapter and tube to attach a hose joint, standard pressure gauge, and manual vacuum
pump. Set the plug valve inside the sampler to the closed position.
C a l i b r a t i o n
A m b i e n t
B P .
A d j .
A m b i e n t
B P .
h P a
3
1 0 1
P
Manual
vacuum pump
Standard
pressure gauge
Hose joint