MULTICAL® 803
Kamstrup A/S · Technical description · 5512-2360_A1_GB_02.2019
65
4.7
Climatic conditions
MULTICAL® 803 is designed for indoor installation in condensing environments with ambient temperatures from
5…55
°
C, but max 30
°
C in order to obtain optimal battery lifetime. Protection class IP65 of the calculator allows
splashes of water.
4.8
Sealing
According to EN 1434, MULTICAL® 803 must have protection devices, which can be sealed to the effect that after
sealing, both before and after the heat calculator has been correctly installed, it is impossible to dismount, remove
or change the calculator or its adjustment devices without visibly damaging the calculator or sealing. Correct sealing
of MULTICAL® 803 includes two levels, installation sealing and verification sealing. A breach of sealing has different
consequences on each level.
Installation sealing
Having completed the installation of MULTICAL® 803, installation sealing is the last thing to be done. The installation
seal is the ‘outermost’ sealing level to be completed by the installer/utility. The installation sealing must make sure
that calculator top and base cannot be separated and that flow sensor and temperature sensors cannot be
dismounted without visible signs that a separation has taken place. In practice, the installation sealing can be done
by means of wire and seal, sealing label or a combination. The sealing is the utility’s security that unauthorized
persons cannot undiscovered change the installation around the calculator. A breach of the installation sealing alone
does not influence the calculator’s possibility for renewed installation sealing or the fact that it is legal in relation to
its approval and verification.
Installation sealing and SETUP loop
In order to bring MULTICAL® 803 back to SETUP loop after installation, the calculator top and base must be
separated after which SETUP loop can be accessed either via front keys or via METERTOOL HCW. Separation of
calculator top and base implies that the calculator’s installation seal is broken.
Verification seal
The MULTICAL® 803 verification seals consist of both mechanical and electronic sealing. Verification seals, marked
with “TEST” and three seal marks (void labels) marked with “Red Kamstrup”, are placed on the grey verification cover
in the calculator top. These seals can be seen as the ‘innermost’ sealing level, which may only be broken by
authorized laboratories in connection with test and reverification of the calculator. If the calculator is to be used for
legal operation in relation to approval and verification after breach of the verification sealing, the broken seals must
be resealed. The sealing must be carried out by an authorized laboratory using the sealing mark (void label) of the
laboratory.
4.9
Replacement and installation of supply modules
Supply modules should only be replaced by qualified persons. For the replacement and installation, exclusively original
spare parts must be used. Prior to any replacement of supply modules, MULTICAL® 803 must be placed in a
deenergized state.
It is possible to replace or add supply modules to MULTICAL® 803 after delivery. The connection board is dedicated
to either 24 VAC/VDC or 230 VAC. Therefore, it is only possible to replace or add supply modules to the same voltage
range as the supply module(s), which MULTICAL® 803 is delivered with, unless the connection board is also replaced.
The supply modules are placed at the bottom of the calculator base on a bracket underneath the connection board
and the bracket for communication modules. A step-by-step guide for replacing/adding supply modules to
MULTICAL® 803 can be found on the next page.