Test Instructions
The 7507 series meter is equipped with a fast output test
device located inside the plastic container.
In order to access this, remove the seal and take out the
fixing screws.
On the right-hand side of the back of the card (fig. 1) there is
a key offering access to the technical manual.
An input pulse can be simulated by connecting pins 11 - 12 (fig. 3).
The maximum input pulse frequency is 1 Hz.
After pressing the key on the back of the card, pressing
the key on the front allows you to scroll through the various
screens.
The energy increases according to the following equation:
D
E
=
κ⋅
D
T
⋅
D
V
⋅
0,2777698
⋅
10
-3
[Wh]
The probes, which absolutely cannot be separated from the electronics circuit,
may be inserted in a thermostatic bath, observing the temperature range of
10–90 °C and taking account of a
D
T between 3–80 K
(fig. 1)
(fig. 2)
(fig. 3)
ELECTRONICS BOX REAR PART
CABLE ROUTE
TEAR-PROOF CABLE CLIP
A
A
A
A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
24 V (ac)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RS48
5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Cooling unit
s
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
digital inpu
t
A
B
Heating units
4
th
pulse inpu
t
3
rd
pulse inpu
t
pulse input
blue wire
white wire
Wh
8
κ
= thermal coefficient [kJ/m
3
K]
D
T
= temperature change [K]
D
V
= volume change [ l ]
D
V = N
⋅
P
where N = number of pulses
P = single pulse value per litre
Operating specifications
1) In order to protect against spurious measurements or undesired metering, the metering control software makes the processing of consumption
subordinate to a specific flow temperature value (FT).
The
heating metering cycle is activated for FT > 22 °C
(factory setting).
The
cooling units cycle is activated for FT < 15 °C
(factory setting, with optional accessory code 755810).
On request, the setpoint values can be changed by technical personnel.
2) The software governing metering moreover has consumption processing subordinate to
a
minimum temperature difference
in order to provide further protection against spurious measurements or minimum metering due to
temperature tolerances. At the time of factory setting,
a dead band of 0,4 K
(factory setting) is therefore defined.
3) The software governing metering also requires
installation of the flow rate meter on the return pipe
.
On request and further to the action of technical personnel, the configuration setpoint can be adapted in order to install the meter on the flow
pipe.
