Danfoss PFM 4000 User guide
User Guide:
PFM 4000 Measuring Instrument - Multisource Version
VUE2B102 © Danfoss 11/2008 HEC
Contents
PFM main features ................................................................................................................................................. 5
Introduction ............................................................................................................................................................5
PFM 4000 Multisource components ...................................................................................................................... 6
Switching on and off .............................................................................................................................................. 7
Introduction ............................................................................................................................................................7
Start of measuring................................................................................................................................................... 8
Sensor zero setting................................................................................................................................................ 11
Quick recording.................................................................................................................................................... 12
Data recording......................................................................................................................................................12
Two Sensors Measuring for Balancing by the Proportional Method................................................................... 15
Calculation of valve presetting for a required flow in one branch....................................................................... 16
Calculation of pressure loss on the valve for required flow.................................................................................17
Working with Projects..........................................................................................................................................19
Starting with projects............................................................................................................................................ 20
Creating new project......................................................................................................................................... 21
Preparing for project balancing – measuring.................................................................................................... 23
Balancing of basic project................................................................................................................................25
Project with Central Pressure Input..................................................................................................................26
Balancing calculation of a project with central pressure input - procedure.....................................................27
Measuring actual flow...................................................................................................................................... 29
Replacement of sintered filters.............................................................................................................................30
Using of Routers...................................................................................................................................................31
Scheme of Using Routers................................................................................................................................. 32
Operations after PDA clean reset -.......................................................................................................................33
HEC VUE2B102 © Danfoss 11/2008
Radio card installation......................................................................................................................................33
PFM4000 Multisource program installation .................................................................................................... 36
Technical specifications .......................................................................................................................................37
VUE2B102 © Danfoss 11/2008 HEC
PFM main features
• Separated main pressure unit and computing unit
based on PDA
Wireless communication in ISM band
• Possible connection up to 10 pressure units
• Accurate pressure measuring with true diff erential
pressure sensor and 24 bit ADC
• Hydraulic by-pass for exact small differential pressure
measuring
• External PT-100 thermometer
• Working with projects
• Programmable autonomous recording mode
• Main unit powered by rechargeable Li-Ion battery
Introduction
PFM 4000 Multisource has been designed for the servicing
and hydraulic balancing of most pressurised heating
and/or cooling systems. It enables measuring of both
under-pressure and over-pressure as well as that of
differential pressure within a given system. Furthermore,
using differences in pressure between the balancing and
measuring elements, the flow through individual branches
of the system can be measured, thus allowing the whole
system to be balanced. PFM 4000 Multisource has a
number of key features that enable easy handling. The
apparatus itself consists of two sepa rate units, main
pressure unit for measuring and computing unit based on
PDA for data analysis. The main pressure is extremely
robust with a sturdy frame and sound cover. It comprises
a differential pressure meter with an integrated true
differential pressure sensor for accurate digital data
processing. Owing to the advantages gained by the use of
digital technology, the PFM 4000 Multisource is able to
compensate for inaccuracies normally associated with
pressure measurements, such as temperature dependency
and non-linearity. In order to increase the accuracy of low
pressure measuring and to enable pressure connection
deaeration, the main pressure unit is designed with incoming
couplers by-pass for hydraulic zero setting. This forms the
basis for the accuracy of subsequent measurements. The
PFM 4000 Multisource can be supplemented with an external
thermometer connected via a coaxial connector. T he
temperature of the working medium can be easily measured
by inserting the thermometer into the differentia l p ressure
outputs due to their size compatibility with the balancing
valve measuring needles. One of the essential PFM 400
Multisource components for balancing hydraulic systems is a
built-in flow meter module. The flow meter works by
calculating the flow through a given branch within the system
using differences in pressure registered by the measuring
element.
HEC VUE2B102 © Danfoss 11/2008
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PFM 4000 Multisource components
I
VUE2B102 © Danfoss 11/2008 HEC
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Switching on and off
1. Press ON/OFF button to switch on PFM 4000
Multisource.
The sensor switches off automatically 60 minutes
after the end of communication with PDA.
Introduction
.
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Start of measuring
1. Insert SD card in the
PDA. Run the PFM 4000
Multisource application
from Start Menu.
Select Measure in the main
menu.
2. Tip! Clicking on any
underlined text, e.g.
Valve, will open change
parameter window.
3. Select Menu, Change
sensor to connect
computing unit to the
sensor.
4. Select Search to obtain
a list of available sensors.
Select desired sensor
from the list and confirm
by clicking OK. If you use
router, router #1means
nearest router to PDA.
Searching of pressure
units do not run via
routers. Make sure that
you are close to pressure
unit during searching.
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Start of
measuring
(continued)
5. Sensor Info button
displays information about
the selected sensor.
6. Click on Valve
selection for changing
valve type or click on
Presetting for changing
presetting value. Change
medium by clicking on
Medium.
7. Select Manufacturer
from list box. Then select
valve type and click Ok.
8. Input valve presetting
and click Ok.
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Start of
measuring
(continued)
9. Select medium from list
box and fill in value of
concentration.
10. Select flow units from
list box.
11. Select temperature
units from list box.
12. Select pressure units
from list box.
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Sensor zero setting
1. Should you want to measure
small differential pressures of
less than 500Pa, the PFM 4000
sensor should be set to zero.
measuring position
zero setting position
2. Zero setting is
achieved by clicking on
Zero button.
3. Connect sensor to the
system, turn zero valve to
horizontal position and
continue by clicking OK.
4. Turn zero valve back
to vertical position and
confirm by clicking OK.
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Quick recording
1. Measured value can be
recorded by clicking on
Quick Record button.
2. Input place and name
of entry.
Data recording
1. Select Records in the
main menu.
2. Click on Menu, New
button.
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