ULTRAFLOW® 54 (H)/(J)
Kamstrup A/S ∙ Technical Description ∙ 5512‐1554_J1_GB _04.2018
31
7.6.2.1
Cable length
Maximum allowable cable length between Pulse Transmitter/Pulse Divider and MULTICAL
®
depends on the output
module used in Pulse Transmitter/Pulse Divider as well as how the MULTICAL
®
calculator is connected. Please refer
to the calculator’s Technical description.
Please note that using long signal cables requires careful consideration in connection with installation. There must
be a distance of
min.
25 cm between signal cables and all other cables to prevent electrical disturbance.
7.6.2.2
Connection of power supply
If ULTRAFLOW
®
is connected via Pulse Transmitter or Pulse Divider, ULTRAFLOW
®
is powered by the supply
module/battery mounted in Pulse Transmitter/Pulse Divider.
7.6.2.2.1
Battery supply
Pulse Transmitter/Pulse Divider is fitted with a D-cell lithium battery with connector. The battery is connected to the
output module.
Optimal battery lifetime is obtained by keeping the battery temperature below 30 °C, e.g. by wall mounting of Pulse
Transmitter/Pulse Divider.
The voltage of a lithium battery is almost constant throughout the lifetime of the battery (approx. 3.65 V). Therefore,
it is not possible to determine the remaining capacity of the battery by measuring the voltage.
The battery cannot and must not be charged and must not be short-circuited.
The battery must be replaced by a corresponding lithium battery with connector from Kamstrup A/S. Used batteries
must be handed in for approved destruction, e.g. at Kamstrup A/S. (See Kamstrup document 5510-408, ”Lithium
batteries - Handling and disposal”).
7.6.2.2.2
Mains supply modules
The mains supply modules are protection class II and are connected to the interface module via a short two-wire
cable with connector. The modules are powered via a two-wire mains supply cable (without earth connection)
through the cable connector of Pulse Transmitter/Pulse Divider. Use supply cable with an outer diameter of
maximum 10 mm and ensure correct stripping of insulation as well as correct tightening of cable connection. (See
paragraph 7.6.2.2.4
)
Max. permitted fuse: 6 A
230 VAC
This PCB module is galvanic separated from the mains supply and is suitable
for direct 230 V mains installation. The module includes a double-chamber
safety transformer, which fulfils double insulation requirements when the
cover is mounted on Pulse Transmitter/Pulse Divider. Power consumption is
less than 1 W or 1 VA.
National regulations for electric installations must be observed. The 230
VAC module can be connected/disconnected by the district heating
station’s personnel, whereas the fixed 230 V installation in the meter panel
must be carried out by an authorized electrician.
Figure 24.
Summary of Contents for ULTRAFLOW 54 H
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