Software P2x for P26 and P29
The software P2x is for P26 and P29 devices
from halstrup-walcher GmbH.
First steps
- Make sure that “Microsoft .NET Framework 3.5” is installed, before
running the program.
- By default the language is set to German. Click on “Extra” à “Sprache” à “Englisch” to change the language to
English.
- Choose the ComPort (Extra à ComPort).
- Connect the Device to the selected ComPort
and to the supply.
- Now click on the button “Connect” to connect to the device. The
current value of the device will be displayed.
Load the settings of the device
If the connection is established,
you can load the settings of the device by pressing the button “Load”.
The device can be set back to factory
settings by selecting the checkbox ‘Factory settings’ before pressing the
button ‘Load’.
Change the settings of the device
By pressing the button “Send” the
settings will be sent to the device. If a parameter is wrong (e.g. out of
range) or an error occurs, the input field becomes red.
Inactive settings (grayed out) will not be sent to then device. To change
these settings you have to use a mode, when they are activated.
The settings are saved permanently
in the device only if all parameters were transferred successfully.
Load/Save settings on the PC
The settings can be saved in a file
and load again from the file (e.g. for programming another device with the same
settings).
To create a file with the settings go to “Settings” à “Save as …”.
To open a file go to “Settings” à “Open …”.
Settings
Scale
The P26/P29 is usually supplied with
standard measuring ranges. You can use the scale to adjust the measuring range
for your own use. This pressure range forms the basis for many other settings
such as the limits for the relays (warnings) and factors for the flow display.
The scaled range should always be more than 0.1 times of that of the P2x’s
measuring range, because otherwise the resolution of the outputs and the
accuracy will be poorer.
Bottom
With this item, you can set the
pressure at which the output will achieve its minimum value (e.g. 4mA, 0mA, -5V
or 0V). Any value within the P2x’s measuring range can be set.
Top
With this item, you can set the pressure
at which the output will achieve its maximum value (e.g. 20mA, +5V or +10V).
Any value within the measuring range can be selected. It can also be less than
the lower scale value.
Circulatory
This is used to set the volumetric
flow value displayed at the maximum scaled pressure (top scale). Zero is always
used as the lower scale value (bottom scale) on the volumetric flow display
(root-extracted measured value).
Mass flow
This is used to set the mass flow
value displayed at the maximum scaled pressure (top scale). Zero is always used
as the lower scale value (bottom scale) on the mass flow display
(root-extracted measured value).
Flow rate
This is used to set the flow rate
value displayed at the maximum scaled pressure (top scale). Zero is always used
as the lower scale value (bottom scale) on the flow rate display
(root-extracted measured value).
Display/Output
Unit
The display unit can be selected
with this item.
The setting also affects the output:
Linear:
Pa, hPa, kPa, mbar, mmH2O,
mmHg, Psi, inH2O, inHg
Root
extracted: m³/s, m³/h, kg/s, kg/min, kg/h, m/s, mph, f/s, f/min, km/h, ft³/h
(The bottom-scale must be set to 0 and the top-scale > 0)
With this parameter, you can select the output type and output range.
You can choose from the following options:
4…20 mA
0…20 mA
-5V…+5V
0V…10V
The setting ‘Unit’ also affects the output:
Linear: Pa, hPa, kPa, mbar, mmH2O, mmHg, Psi,
inH2O, inHg
Root extracted: m³/s,
m³/h, kg/s, kg/min, kg/h, m/s, mph, f/s, f/min, km/h, ft³/h (The bottom-scale
must be set to 0 and the top-scale > 0)
Resolution
This parameter affects the display
resolution. The display is changed according to the adjusted values. For
example, if the setting is 1%, the display changes to show the measuring range
in 1% jumps. This can be used with severely fluctuating pressures to steady the
display. However, this does not have any affect on the relays. For a device
without display, this setting is unimportant.
Sound
With this parameter, the signal that
a key has been pressed can be switched on or off. The duration in ms of the
sound can be set too. For a device without display, this setting is
unimportant.
The menu language can be selected
here. For a device without display, this setting is unimportant. You can choose
from the following languages:
English
German
Italian
French
Zero-point
calibration [min]
This parameter specifies the time
interval for the automatic zero-point calibration. The entry is in min. Setting the parameter to 0 deactivates automatic zero-point
calibration.
Filter [ms]
The measured pressure values can be
smoothened by a filter before they reach the display or analogue output. This
parameter lets you set a time constant for this filter.
LFV[%]
This parameter specifies the value
for creep suppression as a percentage. If this value falls short of the
measured pressure value, the display is set to zero. Creep suppression only
works with volumetric flow, mass flow and flow rate (root-extracted measurement
values).
You can use this menu item to specify an access code for the menu. If
the code is not 0, the access code will be queried after the Menu key has been
pressed. Only when the correct code has been entered you can proceed to the
menu. If the code is 0, this query will not be made. This setting can’t be read
from the device, it can only be written. For that reason the input field for
the password will be empty after loading the settings from a device. For a
device without display, this setting is unimportant and must be set to 0.
Relays
Use this group box to influence the
behaviour of the relays. The relays are only available in the P26.
Switching pressure
This is used to adjust the pressure
value at which the particular relay should switch. The pressure range defined
by the scale should be used as the setting range.
Switching direction
Here you can specify whether the
relay is activated if the warning pressure is exceeded or not met (relay
switching direction). This affects the processing of the hysteresis value.
Switch delay [ms]
The entry value of the relays is
derived from the unfiltered pressure value. With this parameter, you can now
specify how long the pressure value can be exceeded or not met until the relay
switches.
Dropout delay [ms] (from Rev 2.11)
The entry value of the relays is
derived from the unfiltered pressure value. With this parameter, you can now
specify how long the relay stays active after the pressure value falls back to
the inactive relay state.
Alarm duration [ms]
If one of the limits is exceeded and
the relay activated, a warning signal sounds at one-second intervals. With this
parameter, you can set the duration of this warning signal for each relay. The
maximum value here is 1000 ms (continuous tone). If both relays are active, the
longer warning signal of the two sounds. The warning signal may sound different
depending on the activation level. A warning signal duration of 0 ms switches
the signal off.
This item can be used to select the hysteresis for the particular relay.
The hysteresis is always positive.
Consumption
Consumption values are only accessible under
the following circumstances:
·
Air
consumption function is set active in the P2x- device
·
Parameter
Unit is set to one of the following values (m³/s, m³/h, ft³, kg/s, kg/min,
kg/h)
·
The
P2x-Device is connected with the PC via USB or RS232 interface
·
The
consumption protect code is entered and verified from the P2x device
Otherwise the components in the consumption
area will be disabled.
Mode
There are 3 modes to calculate the air consumption
sum:
Off -
air consumption function is switched
off
Σ(∆P>0) - air consumption is calculated from all
positive flow values
Σ(∆P) - air
consumption is calculated from all (+ or -)flow values with respect to the flow
direction
Σ(abs∆P) - air
consumption is calculated from all absolute value of flow values
Flow values in the
range of +/- LFV are not used for the calculation of air consumption sum.
The settings for the
unit and mass and flow parameters are disabled, if the Air consumption function
is active.
Vol./Pulse, Mass/Pulse
This parameter sets the volume or mass flow
indicated by one relay pulse. Volume or mass units are selected by the flow
type selected with the measure unit.
Pulse dur.
This sets the duration in ms of the relay pulse
indicating the above specified amount of mass or volume flow. If this pulse
duration is too short mechanical counter might miss pulses.
Pulse break
This sets the min. delay in ms after any air
consumption related relay pulse.
Filter
Off means the flow values are
calculated from the unfiltered stream of pressure values.
On means the flow values are calculated
from the filtered stream of pressure values. The filter time constant is set
with the value ‘Filter’ in the ‘Display/Output’ section.
Pulse out
This parameter sets the relay(s) which will generates the mass or flow count pulses. The
according relay’s mode is set to consumption and the components in this area
are disabled.
Code
The settings of the air consumption counter are
protected with a 4 digit code. The code must be entered and afterwards checked
with the verify button. The P26 checks the code and will set an internal flag
enabling alteration of the air consumption function. This Flag will be cleared
by power on/off or checking with a wrong code.
Verify
This sends the code to the P2x-device to be
checked against the internally stored code. If code is correct
the P2x-device will allow to change the air consumption parameters.
Former sum
If protect code entered correct and air
consumption components are not disabled the air consumption sum might be reset.
In this case the P2x-device will save the actual sum in an internal non
volatile memory before it resets the actual air consumption value. This value
is shown in the box titled with ‘Former Sum’.
Recall sum
The actual air consumption sum can be
overwritten with internal saved former sum value. Operation time will be
restored as well.
Reset sum
The actual air consumption sum and operation
time will be saved in an internal memory and afterward both values will be
reset to 0.
Display
With these parameters, you can
define the behaviour of the new bigger Display. For P26 devices without the new
display, this panel will not be shown.
Brightness - this parameter sets the
intensity of the LED-backlight.
Contrast - this parameter can optimize the
contrast, if you use a different viewing angle or work at extreme temperatures.
Backlight - choose between none, white or blue
backlight.
Colorchange - if this setting
is activated the backlight color will change from
green over yellow to red if any of the warning levels has been exceeded and the
backlight is activated.
Diagram
The current value is displayed in
this window.
The refresh rate of the diagram is 1
second. To clear the diagram press the button “Clear”.
The unit is loaded from the device.
Log
If the checkbox “Log active” is
checked, the date, the time, the current pressure and the unit will be logged.
The log can be cleared by pressing
the button “Clear” or saved by pressing the button “Save as …”.