Remote Control
Maintenance
All the CPD8000 functions, even the ACF running
command,
can be executed from an external computer
through serial communication (RS232C), which enables it
to be integrated in an automatic calibrating system.
A programming example is given in the user’s manual.
The CPD8000 is delivered with all the operating
instructions, consumables and tools allowing its general
maintenance. No other maintenance is necessary if the
standard is used in accordance with the routine
instructions described in the manual. Usual recalibrations
need only take place every 3 years.
Calibration
CE Compatibility
All the CPD8000 standards are delivered with a gauge
calibration certificate issued as standard by the COFRAC
accredited Degranges & Huot’s laboratory (accreditations
2-1033 and 2-1129), which assures the user that the
presented calibration results are unbiased.
The COFRAC calibration guarantees the traceability of the
measurements done by the CPD8000 to the National and
International Standards.
The calibration is operated in accordance with the RM
aero 802.22 recommendation and takes into account:
- The Kn specific coefficient determination
- The ACF calibration control
The uncertainty calculation presented in the certificate
respects the ISO TAG4 and EAL recommendations and
shows the enlarged uncertainty of the CPD8000 with a
coefficient k = 2.
It takes into account the CPD8000’s intrinsic measurement
errors, the uncertainty of the reference means as well as
the influence of the environment conditions, the pressure
control of the CPD8000’s metrological performances and
the calculation of its measurement uncertainty by
comparison with a reference standard.
The CPD8000 complies with the following European
directives and norms:
-
n° 89/336/CEE Electromagnetic Compatibility Directive
dated May 3
th
,
1989 modified by the n° 92/31/CEE
directive dated May 12
th
, 1992 and the n° 93/68/CEE
directive dated July 22
th
, 1993
-
n° 73/23/CEE Low Tension Directive dated February
19
th
, 1973 modified by the n° 93/68/CEE directive
dated July 22
th
,
1993
-
EN 50082-1 Ed.92 norm (Emission with the
89/336/CEE directive)
-
EN 55022 B Class Ed. 87 norm (Immunity with the
89/336/CEE directive), EN 61010 norm (Safety rules
for the use of measuring, regulating and laboratory
electric instruments with the 73/23/CEE directive)
Option
By using a special adaptation kit, it is possible to use the
gauge head model of the CPD8000-G(Head model 110,
111, 410 and 710) with the CPD8000-A. Those heads can
be used to works only in gauge mode but allows extending
the range capability of the CPD8000-A up to 50 MPa.
Conclusion
Due to its design and its performances, the CPD8000
primary digital standard is unique in the world. The
operations with the balance do not necessitate a bell to
make the vacuum and masses to load.
Associated to an automatic controller, the CPD8000 allows
performing fast calibrations, without having to break the
vacuum between each pressure point, with a high
metrological reliability.
This instruments is used by our more faithful customer
who are National Laboratories, Meteorology, the R&D
laboratories, sensor manufacturers, airway companies …
Desgranges & Huot
56 Rue des Ecoles
93303 Aubervilliers – France
Tel : +33 1 4839 8300
Fax: +33 1 4833 6590
E-Mail :
www.dh-budenberg.com
Page 8 of 8
Desgranges & Huot WIKA Data Sheet CPD8000 04/2012
