Installation - OJ Electronics PTH-3XXX-DF series Handbuch

pressure -50.0.. + 50.0 Pa,
0.0.. + 100.0 Pa,
0.0.. + 150.0 Pa,
0.0.. + 300.0 Pa,
0.0.. + 500.0 Pa,
0.0.. + 1000 Pa,
0.0..1600 Pa,
0.0..2500 Pa.
Measurement ranges,
flow 1.00 m³/s, 3.00 m³/s,
5.00 m³/s, 10.00 m³/s,
30.00 m³/s, 50.00 m³/s,
100.0 m³/s, 100.0 m3/h,
300.0 m3/h, 500.0 m3/h,
1000 m3/h, 3000 m3/h,
5000 m3/h, 9999 m3/h,
30.00 m3/h x 1000,
50.00 m3/h x 1000,
99.99 m3/h x 1000.
m3/h can be replaced
by l/s or m3/s.
Square root output In the flow range P,
differential pressure is
measured as % of
full-scale pressure
range using square root
calculation.
k-factor 0.001 to 9999
Supply voltage 24 V AC ±15%, 50/60 Hz
13.5-28 V DC
Power consumption 0
.5 VA (-20 °C/+40 °C)
Output signal
(selectable) 0-10 V DC, 2-10 V DC
4-20 mA, 0-20 mA
Accuracy output signal
1,5 %xMV+0,3 %xSR+2,5 Pa
(MV=measured value / SR=set measuring range)
Damping (selectable) 0.4 s or 10 s
Max. pressure 20 kPa
Ambient temperature 0/+50°C (display)
-20/+40°C
(constant operation)
-30/+50°C (transient)
-50/+70°C (storage)
Dimensions 75 x 36 x 91 mm
(see figure 1)
Cable dimensions 4 x max. 1.5 mm2
Pressure connector 2 x Ø6.2 mm
Enclosure IP54
Weight 110 g
TECHNICAL DATA PTH-3203-DF
Full-scale pressure range 0 - 2500 Pa
Measurement ranges,
pressure 0.0.. + 25.0 Pa,
0.0.. + 50.0 Pa,
0.0.. + 100.0 Pa,
0.0.. + 200.0 Pa,
0.0.. + 250.0 Pa,
0.0.. + 500.0 Pa,
0.0.. + 625.0 Pa,
0.0..1000 Pa
0.0..1250 Pa,
0.0..2500 Pa
Measurement ranges,
flow 1.00 m³/s, 3.00 m³/s,
5.00 m³/s, 10.00 m³/s,
30.00 m³/s, 50.00 m³/s,
100.0 m³/s, 100.0 m³/h,
300.0 m³/h, 500.0 m³/h,
1000 m³/h, 3000 m³/h,
5000 m³/h, 9999 m³/h,
30.00 m³/h x 1000,
50.00 m³/h x 1000,
99.99 m³/h x 1000.
m³/h can be replaced
by l/s or m³/s.
Square root output In the flow range P,
differential pressure is
measured as % of
full-scale pressure
range using square root
calculation.
k-factor 0.001 to 9999
Supply voltage 24 V AC ±15%, 50/60 Hz
13.5-28 V DC
6
Power consumption 0.5 VA (-20 °C/+40 °C)
Output signal
(selectable) 0-10 V DC, 2-10 V DC
4-20 mA, 0-20 mA
Accuracy output signal
1,5 %xMV+0,3 %xSR+2,5 Pa
(MV=measured value / SR=set measuring range)
Damping (selectable) 0.4 s or 10 s
Max. pressure 20 kPa
Ambient temperature 0/+50°C (display)
-20/+40°C
(constant operation)
-30/+50°C (transient)
-50/+70°C (storage)
Dimensions 75 x 36 x 91 mm
(see figure 1)
Cable dimensions 4 x max. 1.5 mm2
Pressure connector 2 x Ø6.2 mm
Enclosure IP54
Weight 110 g
TECHNICAL DATA PTH-3502-DF
Full-scale pressure range:0 - 5000 Pa
Measurement ranges,
pressure: 0.0.. + 500.0 Pa
0.0.. + 1000 Pa
0.0.. + 1600 Pa
0.0.. + 2000 Pa
0.0.. + 2500 Pa
0.0.. + 3000 Pa
0.0.. + 4000 Pa
0.0.. + 5000 Pa
Measurement ranges,
flow: 1.00 m³/s, 3.00 m³/s,
5.00 m³/s, 10.00 m³/s,
30.00 m³/s, 50.00 m³/s,
100,0 m³/s, 100.0 m³/h,
300.0 m³/h, 500.0 m³/h,
1000 m³/h, 3000 m³/h,
5000 m³/h, 9999 m³/h,
30.00 m³/h x 1000,
50.00 m³/h x 1000,
99.99 m³/h x 1000.
The unit m³/h can be
replaced by l/s or m³/s.
Square root output: In the flow range P, differ-
ential pressure is meas-
ured as % of full-scale
pressure range using
square root calculation.
k-factor: 0.001 - 9999
Supply voltage: 24 V AC ±15%, 50/60 Hz
13.5-28 V DC
Power consumption: 0.5 VA (-20 °C/+40 °C)
Output signal (selectable) 0-10 V DC, 2-10 V DC
4-20 mA, 0-20 mA
Accuracy output signal
1.5 %xMV+0.3 %xSR+5.0 Pa
(MV=measured value / SR=set measuring range)
Damping (selectable) 0.4 s or 10 s
Max. pressure 75 kPa
Ambient temperature 0/+50°C (display)
-20/+40°C
(constant operation)
-30/+50°C (transient)
-50/+70°C (storage)
Dimensions 75x36x91 mm (see fig. 1)
Cable dimensions 4 x max. 1.5 mm²
Pressure connector 2 x Ø6.2 mm
Enclosure IP54
Weight 110 g

INSTALLATIoN

PTH must be securely mounted on a level
surface using screws. PTH is insensitive to
mounting orientation. However, in order to
maintain the specified enclosure rating, tubes
should be attached to both tube connectors if
the connectors point upwards. The enclosure is
equipped with screw holes, see fig. 1.
Pressure is connected by means of tubes.
The higher pressure must be connected to the
"+" connector and the lower pressure to the
"-" connector. If the tubes are unintentional-
ly exchanged, or the pressure is outside the
measurement range, the display flashes. The
© 2012 OJ Electronics A/S
pressure tubes must be as short as possible
and must be secured in position to prevent
vibration. To obtain the best possible results,
pressure must be measured where there is least
risk of turbulent air flow, i.e. in the centre of the
ventilation duct and at a suitable distance from
bends and branches. See fig. 2.
The enclosure is opened without the use of
tools by pressing the snap lock at the side of
the connectors. The transmitter cable may be
up to 50 m in length and must be connected as
shown in fig. 3.
The transmitter cable must be kept separate
from mains-carrying cables as voltage signals
from these may affect transmitter function.
SETTINGS
Select pressure or flow by setting the DIP
switch (SW1, DIP3) (see figs 3 and 4). To display
the measurement range, press the "s" , "t"
or "OK" button on the rear cover once (see fig.
5). If the buttons are not pressed again within
60 seconds, the display will revert to showing
the actual measured value. Press "s" or "t"
repeatedly to change the measurement range
up/down. The measurement range will flash on
the display until the setting has been saved by
pressing the "OK" button.
Pressure measurement (fig. 10): If the DIP
switch (SW1, DIP3) is set for pressure meas-
urement, actual pressure will be shown on the
display. Dial SW2 is not used.
Flow measurement (fig. 11): If the DIP switch
(SW1, DIP3) (fig. 4) is set for flow measurement,
pressing the "OK" button allows the first digit
of the k-factor to be set. The value will flash
and can be set using the "s" and "t" buttons.
When set correctly, press "OK" and set the
second, third and fourth digits correspondingly.
Then press "OK" to save the k-factor and the
display will automatically begin showing the
actual measured value. If standard flow meas-
urement is selected, no pressure range need be
set. An example of flow calculation is shown in
fig. 12.
Square root output (fig. 13): If flow range P is
selected, PTH functions as a pressure transmit-
ter with square root output and flow is displayed
in per cent (Delta P [%]). Full-scale is deter-
mined by the set pressure range (p-range) and
the value shown on the display is calculated as
Delta P [%] = 100x√(Δp/p-range). When flow
range P is selected, pressing "OK" allows the
pressure range to be selected. Once the pres-
sure range has been selected, press "OK" to
save the setting and the display will automati-
cally begin showing the actual measured value.
Changing measurement unit: Depending on the
k-factor unit and the selected flow range, attach
one of the accompanying self-adhesive unit
labels to the front cover of the transmitter (see
figs 6 and 7).
Screw terminal 2 of the pressure transmitter can
provide a 0/2 - 10 V output signal while screw
terminal 4 can provide a 0/4 - 20 mA output
signal (see fig. 3).
The minimum value of the output signal is set
on SW1, DIP1 (see fig. 8).
Set the damping time with the DIP switch
(SW1, DIP2) (see figs. 3 and 9). The transmitter
measures the pressure several times within the
set time and the average of these measure-
ments is continuously reproduced in the output
signal. This allows any pressure fluctuations
within the ventilation system to be dampened in
the transmitter output signal.