MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
11
2.2
Electrical data
Calculator data
Typical accuracy
Calculator: E
C
±
(0.15 + 2/
∆Θ
) %
Sensor pair: E
T
±
(0.4 + 4/
∆Θ
) %
Display
LCD – 7 (8) digits with digit height 6 mm
Resolution
9999,999 – 99999,99 – 999999,9 – 9999999
Energy units
MWh – kWh – GJ
Data logger (Eeprom)
960 hours, 460 days, 24 months, 15 years, 50 Info-events, 25 config. logs
Clock/calendar
Clock, calendar, leap year compensation, target date
Data communication
KMP protocol with CRC16 used for optical communication
Wired M-Bus
Protocol according to EN 13757-3:2013, 300 and 2400 Baud communication
speed with automatic baud rate detection.
Current consumption 1 unit load (1.5 mA).
1.5 m fixed 2-wire cable. Polarity independent.
wM-Bus
Mode C1 protocol according to EN 13757-4:2013. Individual 128 bit AES
encryption.
Transmission interval 16 s
Mode T1 OMS protocol according to EN13757-4:2013 and OMS Specification
Volume 2 issue 3.0.1. Individual 128 bit AES encryption.
Transmission interval 15 min.
Power of temperature
sensors
<
0.5
µ
W RMS
Supply voltage
3.6 VDC ± 0.1 VDC
EMC data
Fulfils EN 1434 class A (MID class E1)
Temperature measurement
2-Wire Pt500
T1
Inlet
temperature
T2
Outlet
temperature
∆Θ
(T1-T2)
Heat metering
∆Θ
(T2-T1)
Cooling metering
Measuring range
0.00…155.00
°
C
0.00…155.00
°
C
0.01…155.00 K
0.01…155.00 K
Battery
3.65 VDC, 1 x A-cell lithium 3.65 VDC, 2 x A-cell lithium
Battery lifetime
t
BAT
<
30
°
C
t
BAT
<
45
°
C
8 years
6 years
16 years
12 years
Data modules, frequent data communication and high ambient temperature
reduce the battery lifetime
Lithium content
0.96 g
2 x 0.96 g
Transport class
Not subject to dangerous goods regulations
Outside the USA
Non-restricted to transport/Non-assigned to Class 9
Within the USA
Belonging to the category of ”small primary lithium cells”
Important:
It is not possible to change the battery on MC 302