WIKA CPP1200-X - Handbuch (Seite 6)

6 WIKA operating instructions model CPP1200-X
GB
14076968.01 12/2013 GB/D
2. Safety
2.1 Intended use
Test pumps serve as pressure generators for the testing, adjustment and calibration
of mechanical and electronic pressure measuring instruments through comparative
measurements. These pressure tests can take place in the laboratory or workshop, or
on site at the measuring point.
The comparison test pump features two connections, for test item and reference
measuring instrument, which can be used in any order. If one connects the test item
and a sufficiently accurate reference measuring instrument to the test pump, on
actuating the pump, the same pressure will act on both instruments. By comparison of
the two measured values at any given pressure value, a check of the accuracy and/or
adjustment of the pressure measuring instrument under test can be carried out.
The integrated dual-area spindle pump enables rapid filling of the test system and
smooth pressure generation up to 1,200 bar. At the same time, the precise, adjustable
spindle pump also enables fine pressure adjustment.
A control schematic for pressure generation on the instrument base facilitates quick
and easy operation. The pump is further characterised by the spindle which runs
solely within the pump body. This eliminates any harmful bending moment from an
externally running spindle and, especially for field operation, there is the advantage that
dimensions of this pump do not alter during operation through the rotation of the spindle.
The term “reference measuring instrument” in these operating
instructions refers to any pressure measuring instrument, such as:
pressure gauge, electrical pressure measuring instrument and pressure
transmitter with electrical output. The comparison test pump system
is only as accurate as the reference measuring instrument used. The
reference measuring instrument should be regularly calibrated in order to
ensure that its accuracy is maintained.
The instrument has been designed and built solely for the intended use described here,
and may only be used accordingly.
The technical specifications contained in these operating instructions must be
observed. Improper handling or operation of the instrument outside of its technical
specifications requires the instrument to be taken out of service immediately and
inspected by an authorised DH-Budenberg/WIKA service engineer.
Handle mechanical precision measuring instruments with the required care (protect
from humidity, impacts, strong magnetic fields, static electricity and extreme
temperatures, do not insert any objects into the instrument or its openings).