MULTICAL® 302
20
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
3.4
Config. >DDD<, Display coding
Display code ”DDD” indicates the active readings of each meter type in "User Loop". ”1” is the first indication. The
display automatically returns to reading ”1” after 4 minutes. During normal operation the display readings of the
selected DDD-code, which are connected to User loop, are shown. See examples of DDD-codes below.
User loop (Loop_1)
H
e
a
t m
ete
r
DDD=
2
1
7
H
e
a
t/
co
o
li
n
g
DDD=
3
1
0
H
e
a
t m
ete
r
DDD=
4
1
0
C
o
o
li
n
g
m
e
te
r
DDD=
5
1
0
H
e
a
t/
co
o
li
n
g
DDD=
6
1
0
1.0
Heat energy (E1)
1
1 *)
1
1 *)
2.0
Cooling energy (E3)
2 *)
1
2 *)
3.0
Volume
2
3
2
2
3
4.0
Hour counter
3
4
3
3
4
5.0
T1 (Inlet)
4
5
4
4
5
6.0
T2 (Outlet)
5
6
5
5
6
7.0
T1-T2 (
∆
t)
(Cooling shown by -)
6
7
6
6
7
8.0
Flow
9
8
7
7
8
9.0
Power
10
9
8
8
9
10.0
Info Code
11
10
9
9
10
11.0
Customer number (N
o
1)
12
11
10
10
11
12.0
Customer number (N
o
2)
13
12
11
11
12
13.0
E8 (m
3
x T1)
7
14.0
E9 (m
3
x T2)
8
*) The display order of DDD=3xx and 6xx can either start with ”E1-E3” or ”E3-E1”.
DDD=210/310/410/510/610 are ”standard codes” used by default. A complete overview of all created DDD-codes
appears from Kamstrup document 5512-1256.
The different loops are described in paragraph 8.
3.5
Energy overview
The above-mentioned energy types E1, E3, E8 and E9 are calculated as follows:
Formula
Example of application
Condition (country code 6xx only)
E1=V1(T1-T2)
Heat energy (V1 in inlet or outlet)
T1
>
T2
T1
>
θ
hc
(Inlet temperature must be
higher than the limit value)
Legal Display/Data/Log
E3=V1(T2-T1)
Cooling energy (V1 in inlet or outlet)
T2
>
T1
T1
<
θ
hc
(Inlet temperature must be lower
than the limit value)
Legal Display/Data/Log
E8=m
3
x T1
Used for calculation of average
temperature of inlet pipe
None
Display/Data/Log
E9=m
3
x T2
Used for calculation of average
temperature of outlet pipe
None
Display/Data/Log
θ
hc
is the temperature, at which the meter shifts between heat and cooling measurement. The typical value is
25
°
C, but other values can be supplied as required.
If
θ
hc
is set at 180
°
C the function is disconnected, e.g. to be used for ”purchase/sale” of heat. See paragraph 7.4 for
further information on heat/cooling meters.