Kamstrup MULTICAL 403 Technical Description

MULTICAL® 403
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Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
Temperature measurement
t1
Inlet
temperature
t2
Outlet
temperature
∆Θ (t1-t2)
Heat
measurement
∆Θ (t2-t1)
Cooling
measurement
t5
Preset
of A1 and A2
403-W/T/C
2-W Pt500
Measuring
range
0,00…185,00 °C
Offset adjustment
± 0,99 K joint zero point adjustment for inlet and outlet temperatures
See paragraph 7.3
Max. cable lengths
Pt500, 2-wire
(Max. ø6
mm cable)
2 x 0,25 mm
2
: 10 m
Pulse inputs A and B
In-A 65-66 and In-B: 67-68 via module
Electronic switch
Reed-switch
Pulse input
680 kΩ pull-up to 3,6 V
680 kΩ pull-up to 3,6 V
Pulse ON
< 0,4 V i > 30 ms
< 0,4 V i > 500 ms
Pulse OFF
> 2,5 V i > 30 ms
> 2,5 V i > 500 ms
Pulse frequency
< 3 Hz
< 1 Hz
Electrical isolation
No
No
Max. cable length
25 m
25 m
Requirements to ext. contact
Leak current at function open < 1 µA
Pulse outputs C and D
Out-C: 16-17 and Out-D: 18-19 via module
Meter factor
Heat meter: Out-C = CE+
Out-D = CV
Cooling meter: Out-C = CE-
Out-D = CV
Heat/cooling meter: Out-C = CE+
Out-D = CE-
Communications module
HC-003-11 (Before 2017-05)
HC-003-21 & -31 (Before 2018-04)
HC-003-11 (After 2017-05)
HC-003-21 & -31 (After 2018-04)
Pulse output type
Open collector (OB)
Opto FET
External voltage
5…30 VDC
1…48 VDC/AC
Current
< 10 mA
< 50 mA
Residual voltage
U
CE
≈ 1 V at 10 mA
R
ON
≤ 40
Ω
Electrical isolation
2 kV
2 kV
Max. cable length
25 m
25 m

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