Danfoss PFM 100 User guide

User guide

PFM 100 Measuring Instrument

Application The PFM 100 is used for measuring the

differential pressure on both sides of a valve in
hydronic systems.

The set consists of:

• One PFM 100 Measuring Instrument.

• Two hoses with couplings.

• Two needles incl. ball valves.

Flow and pressure can be displayed in various
units, which you can choose from in the menu.

The PFM 100 can communicate with you in one
of 10 possible languages.

Please note that the pressure unit must not be
exposed to subzero temperatures. The pressure
unit must at all times be stored at temperatures
above 0° C.

Functions

Usage 1. Connect the hoses to the valve.

2. Air the hoses.

3. Connect the valve to the PFM 100.

4. Zero adjust.

• From the main menu select the Zeroing
option in order to correct the static pressure
influence.

• To reset the device to zero follow the
instruction on the display.

ON / OFF button.

Menu button.

Used for navigating through the menu
options. Press to enter the menu. Press
and hold to exit the menu.

Confirmation button.

OK

Press to select the marked item.

5. Type in the Kv-value.
If the kV value of the measured valve is

known, it can be entered in the PFM 100 to
display the valve flow.

• From the main menu select the Kv value
option.

• Press the Confirmation button to go through
the sequence of numbers.

• Press the Menu button to increase / decrease
the numbers.

• Press and hold the Confirmation button to
save and exit the menu.

6. Read off the flow in the display of the
PFM 100.

© Danfoss | 2021.10 BC051686473936en-010301 | 1

User guide PFM 100 Measuring Instrument

Technical Specifications

Ordering

Typ e Specifications

Pressure sensor Piezo resistive true differential
Pressure range 10 ba r

Max. overpressure

Non-linearity and hysteresis error 0.15% of pressure range
Temperature error 1.5% over ambient and medium temperature
Medium temperature -5 to 90°C
Ambient temperature -5 to 50°C
Storage temperature -5 to 50°C
Pressure connection R21 quick couplers
Batteries 2 x AA NiMH rechargeable
Power consumption Max. 55 mA
Display 128 x 64 monochromatic, backlight
Keyboard 3 keys
Pressure units 11
Flow units 11, incl. US units
kV-range 0 to 99999, with 0.1 step
Dimensions 94 x 218 x 35 mm
Weight 600 g, incl. batteries
Cover IP65
Calibration validity 12 m onths

No. Typ e Set / pcs Danfoss code no.

1 FPM 100 Measuring Instrument 1 003L8260

Positive side: 15 bar
Negative side: 10 bar

Accessories

No. Typ e Set / pcs Danfoss code no.

1 Measuring hose, 2 x 1.5 m 1 set 003L8261
2 Needle 1 pcs 003L8262
3 Quick coupling 1 pcs 003L8263
4 Filters 1 set 003L8264
5 Strap 1 pcs 003L8265
6 ASV-I/M measuring KIT for PFM100 1 set 00 3L82 74
7 ∆p tool for pump optimization 1 pcs 013G7 861

© Danfoss | DCS-S/SI | 2021.102 | BC051686473936en-010301