User Guide
PFM 1000
VU.E2.G1.02 | 3
© Danfoss | 2019.02
Introduction
The PFM 1000 instrument is designed for hydraulic balancing of heating and cooling systems. It allows
measuring static pressure, differential pressures and flow in the said systems. Using the differential
pressure measured by the measuring component in the system, PFM 1000 calculates the flow that
runs through the component (balancing valve or measuring orifice). The application corrects the
calculated flow also for anti-freeze mixes in cooling systems. The flow can be measured in all branches
of the whole hydraulic system and the whole system can be balanced.
PFM 1000 Instrument
Features
The core of the instrument consists of the pressure measuring unit that measures pressure in
balancing components of hydronic systems and sends the measured values to the Bluetooth Low
Energy (hereinafter just BLE) technology in a mobile device with the Android or iOS operating
systems. The PFM 1000 measuring unit is very robust with a massive heavy-duty frame that can
withstand a fall from 2 meters. Inside the measuring unit, there is a hydraulic section with a built-
in symmetrical differential sensor for accurate digital processing of measured data. The PFM 1000
measuring instrument is very accurate and this accuracy is based on:
• Very accurate measuring of the pressure with a fully differential pressure sensor and 24-bit
processing of data from the pressure sensor
• Possibility of resetting the differential pressure for pressure measuring of very low differential
pressures. The resetting of measuring is done at the hydraulic bypass of pressure inputs.
The PFM 1000 instrument uses advanced digital technologies that compensate inaccuracies usually
occurring in pressure measuring, such as temperature dependencies and measuring non-linearity.
Another feature of the PFM 1000 instrument consists in recording measurements. Data from
measuring can be recorded independently and directly in the pressure measuring unit. The
measuring unit is equipped with a time circuit that allows programming a periodical recording of
measurement independently on the application in the mobile device. Once the recording is complete,
the measuring unit turns off and the record remains stored in the measuring unit until the application
reads it out. Another method of recording consists in recording of current values directly into the
mobile device.
Using the BLE transmission, the PFM 1000 application communicates with the measuring unit; a
user-friendly interface can be handled via the user mobile device. The application processes pressure
values and allows displaying the flows in the measured system based on features of balancing
components stored in the mobile device’s storage. The application stores in the mobile device’s
storage balancing valves of most leading European producers. If, incidentally, a valve in not contained
in the application, you can enter the valve’s Kv and the application will calculate the flow from this
value.
You can handle the software by direct touching required fields, or you can use the menu in the upper
section of the screen.
PFM 1000 Pressure
Measuring Unit
