Heat meter calculator QALCOMET HEAT 1
PEQMH1V01
14
pressure - p
max
,
thermal power - q
max
* 100 [kW],
where the q
max
-maximum
flow rate
[m3/h] for this system).
2.11. Regulation functions (additionally):
Using electrically-controlled valve gives the possibility:
automatically maintain selected parameter value within defined limits,
prevent selected parameter from exceeding maximum allowed value,
prevent selected parameter from falling below minimal allowed value.
Following parameters can be selected for regulation:
any thermal power (P1…P3),
any flow r
ate (q1…q5) or any flow rate difference (q1
-q2 or q3-q4)
any
temperature (Θ1 … Θ5),
any temperature difference (Θ1
-
Θ2 or Θ3
-
Θ4),
any pressure (p1 or p2) or pressure difference (p1-p2).
NOTE: Regulation will be efficient only if regulated valve is installed in such way that it can
impact regulated parameter.
Regulation speed (time interval from fully opening the valve to fully closing the valve) can be
selected within boundaries 10…999 s.
Following electrically-controlled valves may be used for regulation:
with separate control inputs for opening and closing the valve,
where current required to open or close the valve does not exceed 2A,
where voltage required to open or close the valve does not exceed 230 V (if control
voltage is different from ~230V 50Hz
–
appropriate additional valve power supply module
should be used),
where time interval from fully opening the valve to fully closing the valve is within
10…999 s.
2.12. Alarm function (additionally):
If regulation function is not required, relay output can be used to generate alarm signal. Relay
contacts will close, if:
- selected parameter value exceeds measurement limits,
- selected parameter exceeds maximum allowed value,
- selected parameter falls below minimum allowed value.
Any parameter listed in paragraph 2.11. can be used to generate alarm signal.
Relay output can handle electrical current up to 2A from 230V source
2.13. Supply voltage
Mains supply
AC (50
2) Hz, 230 V
10
15
,
Power supply < 3 VA (only for calculator)
(consumption of energy per year to 26.3 kWh)
Power supply < 15 VA
(for calculator and extra sensors, consumption of
energy per year to 131.5 kWh)
Readings are unavailable in case of malfunction of the power supply of calculator . Readings will again
be available only to the renewal of the power supply.
Battery
3,6 VDC, D-cell lithium
Replacement interval:
only for calculator
not less than 12 years,
for calculator
and 2 extra ultrasonic flow sensors not less than 6 years,
Summary of Contents for HEAT 1
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