This part of IEC 61987 provides an
• operating list of properties (OLOP) for the description of the operating parameters and the
collection of requirements for a density measuring equipment, and
• device lists of properties (DLOP) for a range of density measuring equipment types
describing them.
The structures of the OLOP and the DLOP correspond with the general structures defined in
IEC 61987-11 and agree with the fundamentals for the construction of LOPs defined in
IEC 61987-10.
Aspects other than the OLOP, needed in different electronic data exchange processes
described in IEC 61987-10, will be published in IEC 61987-92.
Libraries of properties and of blocks used in the concerned LOPs are listed in Annex C and
Annex D.