| | Description
This board can measure two heat flows. It has inputs for two flow meters and
four Pt-100 sensors.
The following measurements are available from the board, when used in a
PRO-NET system:
 |
All temperatures in
°C. |
|
The momentary flow in l/h. |
|
The volume since power-up in m3. |
|
The flow since the last time this value was read from the board, in l. |
|
The number of pulses from the flow meter since the last time this value
was read from the board. |
|
Energy total since start of measurement. This value is divided over two
registers. One holding the measured number of MJ, the other one holding the
number of J. The resolution is therefore 1 J. |
|
Energy since the last time this value was read from the board, in J. |
|
Momentary power in W. The power is calculated from two consecutive pulses
from the water meter. If there is more than 30 s between two pulses, the
power is set to 0. |
|
The hardware setting of the number of pulses per liter. |
The board is designed for use in a PRO-NET system. It can also be used
stand-alone when equipped with a display. The measured values are shown on the
display.
The inputs on the PIB-W can be used as measuring channels individually. If
there is only one heat measurement, the remaining channels can be used for
regular measurements.
Specifications
|
width
|
8 TE
|
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power supply
|
+8...15VDC, < 40mA
|
|
input type
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4 x Pt-100 sensor (4-wire)
2 x open-collector or switch contact
|
|
input range
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Temperature difference 0...100°C
Absolute temperature -20...200°C
Flow 0...10 pulses/second
|
|
jumpers
|
board address, pulses/liter, baud rate, position
of flow meter (hot side or cold side)
|
|
accuracy
|
with standard sensors: +/-2.5% (delta-T >
10°C)
|
|
temperature (operating)
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0...+40°C
|
|
temperature (storage)
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-20...+70°C
|
|
resolution
|
1J, 0.01°C, 1 pulse
|
Connections
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pin
|
signal
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address jumpers
|
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1
|
0V
|
|
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2
|
|
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3
|
+15Vdc (in)
|
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4
|
netwerk +
|
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5
|
GND/netwerk 0
|
|
6
|
netwerk -
|
|
7
|
|
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8
|
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option jumpers
|
|
9
|
|
|
|
10
|
|
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11
|
+15Vdc (out)
|
|
12
|
WM2+
|
|
13
|
GND/WM2-
|
|
14
|
+15Vdc (out)
|
|
15
|
WM1+
|
|
16
|
GND/WM1-
|
|
pin
|
signal
|
|
|
1
|
- force channel 4
|
|
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2
|
- sense channel 4
|
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3
|
+ sense channel 4
|
|
4
|
+ force channel 4
|
|
5
|
- force channel 3
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6
|
- sense channel 3
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|
7
|
+ sense channel 3
|
|
8
|
+ force channel 3
|
|
9
|
- force channel 2
|
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10
|
- sense channel 2
|
|
11
|
+ sense channel 2
|
|
12
|
+ force channel 2
|
|
13
|
- force channel 1
|
|
14
|
- sense channel 1
|
|
15
|
+ sense channel 1
|
|
16
|
+ force channel 1
|
|
