VACUUBRAND CVC 3000 E - Manual (Page 50)

page 50 of 75
Adjustment of the set vacuum during vacuum control:
Fine tuning:
The set vacuum can be fine-adjusted by turning the selection knob while
process is running.
+
Turn the selection knob.
+
A full turn causes a change of the set vacuum of 1.2 decades.
+
Turning the knob one detent causes a change of the set vacuum of
1/10 decade.
Serial Interface:
Command IN_PV: The vacuum value is given as X.XXE±X.
Command OUT_SP or IN_SP: The vacuum value is given as XE±X.
Set vacuum in Torr 1-9 x 10 1 1-9 x 10 0 1-9 x 10 -1 1-9 x 10 -2 1-9 x 10 -3
Hysteresis in Torr
(suggested values)
1 x 10 1 1 x 10 0 1 x 10 -1 1 x 10 -2 1 x 10 -3
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. The adjust-
ment mode can be activated only if the process control is
inactive. Press ”START/STOP” key, if necessary.
➨
For adjustment, install the pressure transducer VSP
3000 in the same orientation in which it will be oper-
ated later at the application.
NOTICE
Readjustment of the gauge head VSP 3000