MULTICAL® 803
132
Kamstrup A/S · Technical description · 5512-2360_A1_
GB
_02.2019
8.2
Flow sensor with reed or relay switch output (Connection type L)
The reed switch output is normally mounted as pick-up unit on vane wheel or Woltmann meters where the relay
switch output is typically found on magnetic inductive flow sensors. Flow sensors are connected to input V1 on the
connection terminals 10 (+) and 11 (-) and input V2 on the connection terminals 10 (+) and 69 (-). Screw terminal 9 is
not used in this application.
The leakage current of the switch must not exceed 1 µA in OFF mode and the resistance of the switch set must not
exceed 10 kΩ in ON mode.
It must be ensured that MULTICAL® 803 is configured with a CCC code if the meter factor (imp/l or l/imp) matches
the connected flow sensors.
Example: The CCC = 011 is used for a calculator with reed pulses with 10 l/imp. and a maximum flow of 1…30 m³/h.
8.3
Flow sensor with transistor output (Connection type 7-8-C-J)
Normally, the flow sensor output is designed as an optocoupler with BJT or FET transistor output. Flow sensors are
connected to input V1 on the connection terminals 10 (+) and 11 (-) and input V2 on the connection terminals 10 (+)
and 69 (-). Connection terminal 9 is not used in this application.
The leakage current of the transistor must not exceed 1 µA in OFF mode and the voltage of the transistor must not
exceed 0.4 V in ON mode.
It must be ensured that MULTICAL® 803 is configured with a CCC code if the meter factor (imp/l or l/imp) matches
the connected flow sensors.
Example: The CCC = 201 is used for an electronic meter with 1 l/imp. and q
p
= 4…150 m³/h.
8.4
Flow sensors with active 24 V pulse outputs (Connection type P)
Flow sensors with active 24 V pulse outputs, for example from Siemens, Krohne or ABB, can be connected to
MULTICAL® 803 by use of connection board 6699-045, which can either be supplied or is available as an accessory
for MULTICAL® 803. The connection is carried out as shown in the figure below. For additional examples, see
paragraph 8.5.
Technical data:
Pulse input voltage
12…32 V
Pulse current
Max 12 mA at 24 V
Pulse frequency
Max 128 Hz
Pulse duration
Min. 3 ms
Cable length V1
Max 100 m (drawn with min. 25 cm distance to other cables)
Galvanic separation
The inputs V1 and V2 are galvanically separated from MULTICAL® 803
Insulation voltage
2 kV
Mains supply for MULTICAL®
24 VAC/VDC or 230 VAC