PESHEAT2V01
2016-01-08
14
The configurable pulse-frequency output in “pulse mode” can be used for thermal energy (
E, E1,
E2, E3) or quantity of liquid V1 (M1), V2(M2), V3(M3), V4 pulses Pulse value will correspond to the
lowest digit of indicated parameter.
The configurable pulse-frequency output in “frequency mode” or current output can be used for
thermal power , flow rate (q1, q2, q3, q4), temperature (
1,
2,
3) or pressure (p1, p2) pulses.
Zero value of frequency (or the minimum value of the selected range of a current) corresponds to
zero value of an output parameter, and frequency 1000 Hz (or maximum value of the selected range of a
current) corresponds to maximum value of parameter:
flow rate – q
max
,
temperature – 180
o
C,
pressure – p
max
,
thermal power– q
max
*100 [kW],
There q
max
- the maximum flow rate in the measurement channel [m
3
/h]).
2.10. Additional functions
2.10.1. Regulation function
Available only with mains power supply version. The double relay output (230V) is intended for
controling of current load up to 2A and it is fitted in main supply module.
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
control a water temperature on the flow pipeline, to maintain the preset room temperature,
depending on outdoor temperature (Θ3).
Following parameters can be selected for regulation:
thermal power,
any flow (q1…q4),
any temperature (Θ1 … Θ3),
temperature difference (Θ1- Θ2),
any pressure (p1 or p2).
IMPORTANT:
Regulation will be efficient only if regulated valve is installed in such way that
it can effect regulated parameter.
Regulation speed (time interval from fully opening the valve to fully closing the valve) is
programmable.
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 exced 2A,
where voltage required to open or close the valve does not exceed 230 V
2.11. Alarm function
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 2.10.1 can be used to generate alarm signal.
2.12. Supply voltage
Internal baterry*
3,6 VDC, D-cell lithium
Replacement interval not less than 10 years,
