Readjustment of vsp 3000, 3000”, pg. 56, Of vsp 3000”, pg – VACUUBRAND DCP 3000 User Manual
Page 56: Notice adjustment at atmospheric pressure
Readjustment of VSP 3000
The vacuum gauge head VSP 3000 was adjusted using
factory standards, which are traceable through regular
calibration in an accredited laboratory (DAkkS calibration
laboratory) to the German national pressure standard.
Depending on the process and/or accuracy requirements,
check the adjustment and readjust if necessary. For re-
adjustment, the device has to be adjusted both at atmo-
spheric pressure as well as under vacuum but only if the
reference pressures are known with certainty.
➨
For adjustment, install the pressure transducer VSP
3000 in the same orientation in which it will be oper-
ated later at the application.
➨
Allow the pressure transducer a period of minimum 20
minutes to preheat.
+
During the first 20 minutes after having connected the
pressure transducer VSP 3000 to a energized vacuum
gauge DCP 3000, adjustment of the VSP 3000 is not
possible.
”---- Torr” is displayed if adjustment is not possible in the
actual pressure range.
NOTICE
Adjustment at atmospheric pressure
An adjustment at atmospheric pressure is only
possible in the upper pressure range.
➨
Vent the measurement connection of the VSP 3000 pressure trans-
ducer. Make sure that the measurement connection of the VSP 3000
is at atmospheric pressure. Allow the pressure transducer a
minimum
of 20 minutes to preheat at this pressure.
750 Torr