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MULTICAL® 803
156
Kamstrup A/S · Technical description · 5512-2360_A1_
GB
_02.2019
11.4.10
PQT Controller (type no.: HC-003-43)
HC-003-43 is an all-round analogue input module for use in MULTICAL® energy meters. The PQT module is for
applications to optimize energy consumption. The PQT module works together with the MULTICAL® 803 calculator
and reads the calculator’s flow, power, temperature difference and outlet temperature. The read data is used
together with the limit values configured in the module to control the connected motor valve.
The regulator is fully programmable and can be selected to regulate according to one or more monitoring
parameters. Normally, a power control that is controlled only according to a fixed power limit is desired. It is also
possible to choose to limit according to a fixed maximum flow.
In addition to power and flow, the regulator can also be configured to monitor the temperature difference and/or
outlet temperature and thus further limit the final flow.
Likewise, PQT Controller can be adjusted in such a way that a minimum flow is always ensured so that frost bursts
can be avoided.
PQT Controller must use an isolated 24 VAC power to drive the connected motor valve with a maximum power up to
10 VA. For this purpose, the use of 230/24 VAC transformer 6699-403 (5 VA) or 6699-404 (10 VA) is recommended.
152
151
150
Up Y
1
24 VAC Supply
Max 10 VA
~
97
98
Com N
Dn Y
2
24 VAC
24 VAC
~
T
Typical PQT installation: