Kamstrup MULTICAL 403 Technical Description

MULTICAL® 403
10
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
1.2 Electronic structure
The electronic construction of MULTICAL® 403 is shown in the block diagram below. One of the described modules,
which include pulse inputs or pulse outputs in addition to data communication, can be mounted in the module bay
of MULTICAL® 403. During operation MULTICAL® 403 only includes one of the seven supply module types.
1
Microcontroller
10
Pulse outputs
2
Display, eight-digit seven-segment + symbols
11
M-Bus
3
Non-volatile memory, E² PROM
12
Data communication
4
Temperature sensors Pt500
13
RS485
5
Flow sensor, piezo elements
14
Analog 0/4…20 mA
6
Battery, 2 x A-cell, 1 x C-cell or 1 x D-cell
15
… and even more communication options
7
Linear power supply, 24 VAC or 230 VAC.
16
Galvanically separated power supplies
8
Pulse inputs
17
Galvanically separated communication modules
9
Wireless M-Bus
Note: The arrows in the figure indicate the signal direction

Kamstrup MULTICAL 403 Specifications

General

Type	Ultrasonic Heat Meter
Flow Sensor	Ultrasonic
Pressure Rating	PN16
Battery Life	Up to 16 years
Approval	MID Class 2
Display	LCD
Communication	M-Bus, Wireless M-Bus, Modbus, BACnet
Power Supply	Battery
Accuracy	Class 2
Protection Class	IP54
Housing Material	Composite
Flow Rate Range	0.6 m3/h to 15 m3/h