PF3154 - Pressure sensor IFM - Free user manual and instructions

Product type	Combined pressure sensor with digital display and switching and analog outputs
Brand	IFM
Model	PF3154 (PF30 series)
Pressure type	Relative pressure
Measuring range	0...25 bar (depending on variant, up to 250 mbar)
Overload pressure	100 bar (for 25 bar model)
Power supply	20...30 V DC
Switching output	Transistor 250 mA, configurable (hysteresis/window, NO/NC)
Analog output	4...20 mA, max. load 500 Ω
Switching point accuracy	< ±1.5 % of measuring range
Repeatability	< ±1.0 % of measuring range
Materials in contact with fluid	Stainless steel 316L, ceramic, FPM (Viton), PTFE
Housing material	Stainless steel 316L, Pocan, PC (Macrolon), PA, EPDM/X, FPM
Protection rating	IP 67, class III
Fluid temperature	-25...+80 °C
Ambient temperature	-25...+80 °C
Display	3-digit digital display, red LED for switching status
Programmable functions	Hysteresis, window, switch-on/switch-off delay, damping
Locking / Unlocking	Button lock to prevent accidental programming
Maintenance and cleaning	Cleaning possible of the filter system cover (unscrew and clean carefully)

Frequently Asked Questions - PF3154 IFM

How to set the high set point (SP1)?

In Run mode, press the Mode/Enter button repeatedly until SP1 is displayed. Press and hold the Set button until the value flashes, then adjust with Set and confirm with Mode/Enter.

What does the display 'OL' mean?

OL (Overload) indicates overpressure: the system pressure exceeds 110 % of the maximum rated pressure. Reduce pressure immediately.

How to clean the sensor?

Unscrew the filter system cover (use pliers with plastic-covered jaws). Clean the cover carefully without pressing residue into the vent. Then screw the cover back on.

What is the difference between Hno and Hnc modes?

Hno (hysteresis/normally open): the output switches when the pressure exceeds SP1 and resets below rP1. Hnc (hysteresis/normally closed): the output is closed as long as the pressure is below SP1.

How to lock the device to prevent accidental programming?

In Run mode, press both buttons (Mode/Enter and Set) simultaneously for 10 seconds. The display goes off and then on again: the device is locked. Repeat to unlock.

What does the flashing display 'SC I' mean?

SC I (short circuit) indicates a short circuit on the switching output. The output is automatically turned off. Check the wiring.

Can I use this sensor for food products?

Yes, the sensor is EHEDG and 3A certified. The grease provided for the seals is food-compatible (apply it on the sealing chamfers).

How to set the delay (dS1/dr1)?

In Display mode, scroll through the parameters to dS1 (switch-on delay) or dr1 (switch-off delay). Press and hold Set, adjust the value (0 to 50 s) and confirm with Mode/Enter.

Which process adapters are available?

Specific ifm adapters (to be ordered separately) allow mounting the sensor on different connections. Follow the mounting instructions: grease the chamfers and screw in until stop without forcing.

How to read the current pressure during adjustment?

The device remains operational in Display mode and Programming mode. The display shows the measured pressure continuously, except during parameter modification (shows the value).

USER MANUAL PF3154 IFM

Combi-Drucksensor Combined pressure sensor

M=Mode/Enter
S = Set

Sicherheitshinweise

Please read the product description prior to installing the unit. Please check that the product is suitable for your application without any restrictions.

If the operating instructions or the technical data are not adhered to, personal injury and/or damage to property may occur.

Please check in all applications that the product materials (see Technical data) are compatible with the media to be measured.

Controls and visual indication

①	LED display	display of the system pressure, display of parameters and parameter values
②	LED red	switching status; lights if the output has switched
③	Mode / Enter button	selection of the parameters and acknowledgement of the parameter values
④	Set button	setting of the parameter values (scrolling by holding pressed; incremental by pressing briefly)

1. Function and features

• The pressure sensor detects the system pressure,
• shows the current system pressure on its display (indication as from 1% to 105% of the value of the measuring range),
• and generates 2 output signals according to the set output configuration.

output 1	output 2
hysteresis function / N.O. (Hno)	analog 4 ... 20 mA
hysteresis function / N.C. (Hnc)
window function / N.O. (Fno)
window function / N.C. (Fnc)

The unit is EHEDG 3A certified

Applications

Type of pressure: relative pressure

	Measuring range	Order no. pressure	Bursting pressure
PF30x3 0 ...	25 bar 100 bar 350	bar
PF30x4 0 ...	10 bar 50 bar 150 bar
PF30x6 0 ...	2,5 bar 20 bar 50 bar
PF30x7 0 ...	1 bar 10 bar 30 bar
PF30x8 0 ...	250 mbar	10 bar 30 bar

Avoid static and dynamic overpressure exceeding the given overload pressure.

Even if the bursting pressure is exceeded only for a short time the unit can be destroyed (danger of injuries)!

Indication of the current system pressure as from 1% of the value of the measuring range. Display "0" does not mean that the system is free of pressure!

Hysteresis:

The hysteresis keeps the switching state of the output stable if the system pressure varies about the preset value. When the system pressure is rising, the output switches when the switch-on point has been reached (SP1); when the system pressure is falling again, the output switches back when the switch-off point (rP1) has been reached.

The hysteresis can be set: First the switch-on point is set, then the switch-off point with the requested difference.

Window function:

The window function enables the monitoring of a defined acceptable range. When the system pressure varies between the switch-on point (SP1) and the switch-off point (rP1), the output is switched (window function / NO) or not switched (window function / NC).

The width of the window can be set by means of the difference

between SP1 and rP1. SP1 = upper value, rP1 = lower value.

2. Operating modes

Run mode:

(Normal operating mode)

When the supply voltage has been applied, the unit is in the Run mode. It monitors and switches the transistor output according to the set parameters. The value of the analog output depends on the system pressure.

The display shows the current system pressure, the red LED indicates the switching state of the output.

Display mode:

(Indication of parameters and the set parameter values)

When the "Mode/Enter" button is pressed for a short time, the unit passes to the Display mode. Internally it remains in the operating mode. Irrespective of this the set parameter values can be read:

• The parameter names are scrolled with each pressing of the "Mode/Enter" button.
• When the "Set" button is pressed for a short time, the corresponding parameter value is displayed for approx. 5s; then the unit returns to the Run mode.

Programming mode:

(Setting of the parameter values)

The unit passes to the programming mode when after the selection of a parameter value (Display mode) the "Set" button is pressed until the display of the parameter value is changed. Internally the unit remains in the operating mode. It continues its monitoring function with the existing parameters until the change has been terminated.

You can change the parameter value by pressing the "Set" button and confirm it by pressing the "Mode/Enter" button. The unit returns to the Run mode when no button has been pressed for 5s.

3. Installation

Before mounting and removing the sensor, make sure that no pressure is applied to the system.

The unit is adaptable for various process fittings. ifm adapters to be ordered separately as accessories.

The housing (A) is freely rotatable.

Prozess adapter:

Mount adapter (C) to the sensor first, then sensor + adapter to the process connection by means of a nut, a clamping flange or similar (B).

If it is not possible to slide the fixing element (B) down over the top of the sensor: slide it up over the bottom of the sensor before the adapter is mounted.

Sensor and adapter are only to be mounted once.

If it is not possible to slide the fixing element (B) down over the top of the sensor: slide it up over the bottom of the sensor before the adapter is mounted.

Welding adapter:

Weld the adapter first. Then mount the sensor.

Mounting of the adapter Step 1

Grease thread and sealing chamfer of the sensor and of the adapter with the greasing paste supplied.

The greasing paste is food-grade (USDA-H1 84-201).

Make sure that the O-ring (D) is correctly positioned.

Step 2

Screw the sensor into the adapter. Avoid mechanical influence on the sealing chamfers.

Step 3

Clamp sensor and adapter into a clamping device (E). The sealing chamfers (F) must not be damaged. Tighten the sensor with a spanner until you can feel the end stop.

Note: If you continue to turn, this can have adverse effect on the sealing.

4. Electrical connection

The unit must only be connected by an electrician.

The national and international regulations for the installation of electrical equipment must be observed.

Voltage supply to EN50178, SELV, PELV.

Disconnect power before connecting the unit.

Wiring:

Core colours of ifm sockets:

1 = BN(brown) ,
2 = WH (white),
3 = BU (blue),
4 = BK (black).

5. Adjustable parameters

Menu structure: see fold out page

SP1	Switch-on point: Upper limit value at which the output changes its switching status. • setting range 1 ... 100% of the value of the measuring range • in steps of 0.5% of the value of the measuring range • indicated in bar
rP1	Switch-off point: Lower limit value at which the output changes its switching status. • setting range 0.5 ... 99.5% of the value of the measuring range • in steps of 0.5% of the value of the measuring range • indicated in bar rP1 is always lower than SP1. The unit only accepts values which are 0.5% lower than SP1. Changing the switch-on point also changes the switch-off point (the distance between SP1 and rP1 remains constant). If the distance is higher than the new switch point, it is automatically reduced (rP1 is set to the minimum setting value).
d5i dr i	Delay time for the switching output dS1 = switch-on delay; dr1 = switch-off delay The output does not immediately change its switching status when the switching condition is met but when the delay time has elapsed. If the switching condition is no longer met when the delay time has elapsed, the switching state of the output does not change. • setting range: 0 - 0.2 - 0.4 ... 9.8 - 10 - 11 - ... - 49 - 50s • in steps of 0.2 or 1s • indicated in seconds
OU i	Switching functions of the switching output 4 settings can be selected: Hno = hysteresis / normally open Hnc = hysteresis / normally closed Fno = window function / normally open Fnc = window function / normally closed
dAP	Damping for the switching output Pressure peaks of short duration or high frequency can be filtered out. dAP-value = response time between pressure change and change of the switching status in ms. • the value for dAP defines the switching frequency (f) of the output:
	dAP 3 6 10 17 30 60 125 250 500
	f [Hz] 170 80 50 30 16 8 4 2 1

6. Programming

Take the following 3 steps for programming:

1	Mode/Enter Set	→SP1	Press the Mode/Enter button several times until the respective parameter is displayed.
2	Mode/Enter Set	→10	Press the Set button and keep it pressed. The current parameter value is indicated for 5s, then the value is increased* (incremental by pressing briefly or scrolling by holding pressed).
		→15
3	Mode/Enter Set	→SP1	Press the Mode/Enter button briefly (= acknowledgement). The parameter is displayed again, the set parameter value becomes effective.
Wait 5s (the unit passes to the operating mode and the current measured value is indicated again), or start again with step 1 to program other parameters.

*Decrease the value: Let the display of the parameter value move to the maximum setting value. Then the cycle starts again at the minimum setting value.

If no button is pressed for 20s during the setting procedure, the unit returns to the run mode.

Locking / Unlocking

The unit can be electronically locked to prevent unwanted adjustment of the set parameters: Press (in Run mode) both setting buttons for 10s. As soon as the indication goes out the unit is locked or unlocked. Units are delivered from the factory in the unlocked state.

With the unit in the locked state is indicated briefly when you try to change parameter values.

7. Installation and set-up / operation

After mounting, wiring and setting check whether the unit operates correctly.

Faults displayed during operation:

OL	= overload pressure (system pressure > 110% of the max. nominal pressure)
SC J	(FLASHING) = short-circuit in the switching output; the output is switched off

Cleaning of the filter cover

If viscous and residues producing media clog the filter cover of the sensor (and thus reduce the measuring accuracy slightly), you can clean it.

Unscrew the filter cover (B) (use a pair of pliers with plastic-covered jaws for this). Clean the cover thoroughly.

The vent (A) should only be cleaned by skilled personnel and with utmost care.

Possible medium residues must not be compressed and pressed into the vent. This could clog the filter system and reduce the measuring accuracy of the sensor.

Screw the filter cover again tightly.

The sensor is sufficiently protected against harsh ambient conditions (protection IP 67). The protection rating can be increased by a special accessory (order no. E30043).

8. Technical data

Operating voltage [V]	20 ... 30 DC
Current rating [mA]	250 short-circuit protection, reverse polarity protection / overload protection, integrated Watchdog Voltage drop [V]. < 2 Current consumption [mA] < 60 Analog output 4 ... 20 mA Load [Ω]. max. 500
Characteristics deviation [% of value of measuring range]	< ± 1.0 Repeatability [% of value of measuring range] < ± 0.25 Accuracy of switch point [% of value of measuring range] < ± 1.5 Temperature drift [% of value of measuring range / 10 K] < ± 0.3* in the temperature range [°C] -25 ... +80 Power-on delay time [s] 0.2 Response time analog output [ms] 3
Materials (wetted parts)	stainless steel (316S12); ceramics; FPM (Viton); PTFE
Housing material	stainless steel (316S12); Pocan; PC (Macrolon); PA; EPDM/X (Santoprene); FPM
Protection	IP 67 Protection class. III
Insulation resistance [MΩ]	> 100 (500 V DC)
Shock resistance [g]	50 (DIN / IEC 68-2-27, 11ms)
Vibration resistance [g]	20 (DIN / IEC 68-2-6, 10 - 2000 Hz)
Switching cycles min.	100 million
Ambient temperature [°C]	-25 ... +80
Medium temperature [°C]	-25 ... +80
Storage temperature [°C]	-40 ... +100
EMC
IEC 1000/4/2 ESD:	4 / 8 KV
IEC 1000/4/3 HF radiated:	10 V/m
IEC 1000/4/4 Burst:	2 KV
IEC 1000/4/6 HF conducted:	10 V

*0.4% for PF30x8

9. Scale drawing

(1) 7-segment display
② programming button
(3) filter cover

④ sealing edge
(5) ifm thread for connection to ifm process adapter