Operating instructions

Pressure sensor
UK

PN42
10 / 2007
704298 / 00
Contents
1 Safety instructions ........................................................................ 3
2 Function and features ................................................................... 4
3 Function ........................................................................................ 5
3.1 Switching function...................................................................... 5
4 Installation .................................................................................... 5
5 Electrical connection..................................................................... 6
6 Operating and display elements ................................................... 7
7 Menu............................................................................................. 8
7.1 Menu structure........................................................................... 8
7.2 Menu explanation ...................................................................... 8
8 Parameter setting ......................................................................... 9
8.1 Parameter setting general ......................................................... 9
8.2 Setting the output signal .......................................................... 11
8.3 User settings (optional)............................................................ 11
8.4 Service functions ..................................................................... 12
9 Operation .................................................................................... 13
9.1 Operation indication................................................................. 13
9.2 Read the set parameter values ............................................... 13
9.3 Fault indication ........................................................................ 13
10 Scale drawing ........................................................................... 14
11 Technical data ........................................................................... 15
11.1 Setting ranges ....................................................................... 16
12 Factory setting .......................................................................... 17

2
Preliminary note
• In these instructions the operating elements are represented as follows:
[Mode/Enter] = “Mode/Enter” button
• The indications are represented as follows:
[OU1] = parameter “OU1”, [Hno] = parameter value “Hno”
• An instruction on how to act is indicated by “►”.
Example: ► Check the reliable functioning of the unit.
• A reaction to the action is indicated by “>”.
Example: > LED is lit. UK

1 Safety instructions
• Please read the product description prior to installing the unit.
• Ensure 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 for all applications that the product materials (see Technical
data) are compatible with the media to be measured.
• For gaseous media the application is limited to max. 25 bar.

3
2 Function and features
The pressure sensor detects the system pressure.
• It shows the current system pressure on its display.
• It generates 1 output signal according to the set output configuration. OUT1 =
switching signal for system pressure.
Applications
Type of pressure: relative pressure
Permissible Bursting
Order no. Measuring range
overload pressure pressure
bar PSI1) bar PSI bar PSI
PN4220 0...400 0...5 800 600 8 700 1 000 14 500
PN4221 0...250 0...3 630 400 5 800 850 12 300
PN4222 0...100 0...1 450 300 4 350 650 9 400
PN4223 0...25 0...363 100 1 450 350 5 075
PN4224 0...10 0...145 75 1088 150 2 175
PN4226 0...2.5 0...36.3 20 290 50 725
mbar PSI bar PSI bar PSI
PN4227 0...1 000 0...14.5 10 150 30 430
bar inHg bar inHg bar inHg
PN4229 -1...1 -30...30 20 590 50 1 476
1)
For units with measuring range > 999 PSI 1/10 of the PSI value is displayed.
The displayed value must be multiplied by factor 10.
Example: displayed value = 15; real value = 15 * 10 = 150 PSI.
MPa = bar ÷ 10 / kPa = bar × 100
Static and dynamic overpressures exceeding the indicated overload pres-
sure are to be avoided by taking appropriate measures.
The indicated bursting pressure must not be exceeded. Even if the bursting
pressure is exceeded only for a short time, the unit can be destroyed.
NOTE: Risk of injury!
For gaseous media the application is limited to max. 25 bar.
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!

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3 Function
3.1 Switching function
OUT1 changes its switching state when the set switching limits have not been
reached or have been exceeded (SP1, rP1). The following switching functions can
be selected:
• hysteresis function / normally open: [OU1] = [Hno] (→ fig. 1).
• hysteresis function / normally closed: [OU1] = [Hnc] (→ fig. 1).
First the set point (SP1) is set, then the reset point (rP1) with the requested difference.
• window function / normally open: [OU1] = [Fno] (→ fig. 2). UK
• window function / normally closed: [OU1] = [Fnc] (→ fig. 2).
The width of the window can be set by means of the difference between SP1 and
rP1. SP1 = upper value, rP1 = lower value.

P 1 P FE 2

SP SP
HY
rP rP

t t
1 1
0 Hno Fno
0
1 1
0 Hnc 0
Fnc

P = system pressure; HY = hysteresis; FE = window (acceptable range)

4 Installation
Before mounting and removing the sensor, make sure that no pressure is
applied to the system.
► Insert the unit in a ¼‘‘ NPT process connection.
► Tighten firmly.

5
5 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.
Caution: For the output circuit the same protective measures as for the
supply circuit must be taken.
Insert a miniature fuse according to IEC60127-2 Sheet 1 (≤ 5 A fast acting).
The permissible potential difference between supply and output circuit is
max. 300 V.
► Disconnect power.
► Connect the unit as follows:

connector view
(sensor) 1
L1
2 A
N
3
4 2 3
n.c.
5 1 4

5 B

A: supply circuit
B: output circuit
: safe separation

6
6 Operating and display elements

Mode/Enter Set
3 UK

1: LED display
- Display of the system pressure1).
- Display of parameters and parameter values.
2: LED red
Indication of the switching status; lights if the output has switched.
3: Set pushbutton
- Setting of the parameter values (scrolling by holding pressed, incremental by pressing
briefly).
4: Mode/Enter pushbutton
- Selection of the parameters and acknowledgement of the parameter values.
1)
PSI value for units with measuring range > 999 PSI = displayed value × 10

7
7 Menu
7.1 Menu structure

S
M

M RUN M
S
M
M
S S
M M
M M
S S
M M
M M
S S
M M
M M
S S
M
M M
S
M
M
RUN S
M
M = Mode/Enter M
S = Set S
M
M

7.2 Menu explanation

SP1/rP1 Upper / lower limit value for the system pressure at which output 1 changes
its switching status.
OU1 Output function for OUT1:
• Switching signal for the limit values: hysteresis function [H ..] or window
function [F ..], normally open [. no] or normally closed [. nc] each.
EF Extended functions / Opening menu level 2.
HI / LO Maximum / minimum value memory for the system pressure.
COF Zero point calibration.

8
 CAr Calibration reset.
dS1 / dr1 Switch-on delay / reset delay for für OUT1.
dAP Damping for OUT1.
diS Update rate and orientation of the display.
Uni Standard unit of measurement for the system pressure.

8 Parameter setting
During the parameter setting process the unit remains in the operating mode. It
continues its monitoring function with the existing parameters until parameter set- UK
ting has been terminated.
8.1 Parameter setting general
Each parameter setting requires 3 steps:
1 Selecting parameter
► Press [Mode/Enter] until the re-
Mode/Enter Set
quested parameter is displayed

2 Setting the parameter value

► Press [Set] and keep the buton
pressed. Mode/Enter Set
> Current setting value of the param-
eter bit flashes for 5 s.
> After 5 s: Setting value is changed:
incremental by pressing briefly or
scrolling by holding pressed.
The numerical values are incremented continuously. If the value is to be reduced: Let
the display move to the maximum setting value. Then the cycle starts again at the
minimum setting value.
3 Acknowledge parameter value
► Press [Mode/Enter] briefly.
Mode/Enter Set
> The parameter is displayed again.
The new setting value is stored.
Set more parameters:
► Start again with step 1.
Finishing parameter setting:
► Press [Mode/Enter] several times until the current measured value is displayed
or wait for 15 s. The unit returns to the operating mode if no button is pressed for
over 15 s after acknowledgement of the new parameter value.

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• Changing from menu level 1 to menu level 2:
► Press [Mode/Enter] until [EF] is
displayed.
Mode/Enter Set

► Press [Set] briefly.

> The first parameter of the submenu is
Mode/Enter Set
displayed (here: [HI]).

• Locking / unlocking
The unit can be locked electronically to prevent unintentional wrong settings.
► Ensure that the unit is in the normal
operating mode.
Mode/Enter Set
► Press [Mode/Enter] + [Set] for 10 s.
> [Loc] is displayed.

During operation: > [Loc] is displayed briefly when you try to change parameter values.
For unlocking:
► Press [Mode/Enter] + [Set] for 10 s.
Mode/Enter Set
> [Loc] is displayed.

On delivery: Unlocked.
• Timeout:
If no button is pressed for 15 s while the parameters are being set, the unit returns to
the operating mode with unchanged values.

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8.2 Setting the output signal
8.2.1 Setting the switching limits
► Select [SP1] and set the value at which the output switches.

► Select [rP1] and set the value at which the output switches back.
rP1 is always lower than SP1. The unit only accepts values which are lower
than SP1.
8.2.2 Setting the output function
► Select [OU1] and set the switching function:
[Hno] = hysteresis function / normally open, UK
[Hnc] = hysteresis function / normally closed,
[Fno] = window function / normally open,
[Fnc] = window function / normally closed.
8.3 User settings (optional)
8.3.1 Setting the unit of measurement for the system pressure
► Select [Uni] and set the unit of measurement: [bAr] (= bar / mbar), [PA]
(= MPa / kPa), [inH] (= inHg), or [PSI].
For units with measuring range > 999 PSI 1/10 of the PSI value is dis-
played. The displayed value must be multiplied by factor 10.
Example: displayed value = 15; real value = 15 * 10 = 150 PSI.
Labels for the different units of display are enclosed with the unit. Stick the
respective label on the sensor or fill in the blank label.
8.3.2 Configuring the display
► Select [diS] and set update rate and orientation of the display:
[d1]: Update of the measured value every 50 ms.
[d2]: Update of the measured value every 200 ms.
[d3]: Update of the measured value every 600 ms.
[Ph]: Display of the measured peak value remains for a short time (peak
hold).
[rd1], [rd2], [rd3], [Ph]: Display like d1, d2, d3, Ph; rotated by 180°.
[OFF]: The display is deactivated in the operating mode.

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8.3.3 Zero-point calibration
► Select [COF] and set a value between -5% and 5% of the final value of
the measuring range. The internal measured value “0” is shifted by this
amount.
Resets the calibration set by COF to the value set at the factory.
► Press [Mode/Enter] until [CAr] is displayed.
► Press [Set] and keep it pressed until [---] is displayed.
► Press [Mode/Enter] briefly.
8.3.4 Setting the delay time for OUT1
[dS1] = switch-on delay for OUT1.
[dr1] = switch-off delay for OUT1.
► Select [dS1] or [dr1], set value between 0.1 und 50 s (at 0.0 the delay
time is not active).
8.3.5 Setting the damping for OUT1
► Select [dAP], set value between 0.01 ... 4.00 s; (at 0.00 [dAP] time is
not active).
dAP-value = response time between pressure change and change of the
switching status in seconds (s).
Correlation between switching frequency and [dAP]: fmax = 1 ÷ 2dAP.
8.4 Service functions
8.4.1 Reading the min./max. values for the system pressure
► Select [HI] or [LO], press [Set] briefly.
[HI] = maximum value, [LO] = minimum value.
Delete memory:
► Select [HI] or [LO].
► Press [Set] until [---] is displayed.
► Press [Mode/Enter] briefly.

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9 Operation
After power on of the supply voltage the unit is in the Run mode (= normal opera-
tion). It carries out its measurement and evaluation functions and generates output
signals according to the set parameters.
9.1 Operation indication

2 UK

1 Current system pressure in bar, MPa, PSI.

PSI value for units with measuring range > 999 PSI = displayed value × 10.
2 Switching status of OUT1.
9.2 Read the set parameter values
► Press [Mode/Enter] briefly to scroll the parameters.
► Press [Set] briefly to indicate the corresponding parameter value for 15 s. After
another 15 s the unit returns to the Run mode.
9.3 Fault indication
[OL] overload pressure (measuring range exceeded)
[UL] underpressure range (measuring range below the minimum value)

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10 Scale drawing

1 2
34 48

1201)

862)
1/2" 20UNF 2A

14
27
30 14 -18NPT-B2

1: Display; 2: programming button

1)
122.6 (PN4220)
2)
88.3 (PN4220)

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11 Technical data
Nominal voltage [V] .................................................................... 90 ... 240 AC (45....65 Hz)
Voltage tolerance [%]............................................................................................... -5 / +10
Operating voltage [V] ....................................................................................... 85 ... 265 AC
Current rating [A] ........................................... 2.5 (20°C), 1.5 (45°C), 1 (60°C), 0.25 (70°C)
shortly (< 200 ms) 15 A (+20°C); 6 A (+60°C)
Integrated Watchdog
Voltage drop [V] .............................................................................................................. < 2
Current consumption [mA] ............................................................................................ < 10
Power-on delay time [s] .................................................................................................. 0.2
UK
Accuracy / deviations (in% of the span)
- switch point ............................................................................................................. < ± 1.0
- linearity ................................................................................................................... < ± 0.5
- hysteresis ............................................................................................................... < ± 0.1
- repeatability (with temperature fluctuations < 10K) ................................................. < ± 0.1
Long-time stability (in% of the span per year) ........................................................... < ± 0.1
Temperature coefficients (TEMPCO) in the compensated
temperature range 0 ... +80°C (in% of the span per 10 K)
- greatest TEMPCO of the zero point / of the span ................................... < ± 0.2 / < ± 0.3
Materials (wetted parts) ........................... stainless steel (303S22); ceramics; FPM (Viton)
Housing material ................................................. stainless steel (304S15); PC (Macrolon);
PBT (Pocan); PA; FPM (Viton); EPDM/X (Santoprene)
Protection / Protection class ..................................................... IP 67 II (PN4220- PN4222)
Protection / Protection class .................................................. IP 65* II (PN4223 - PN4229)
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
Operating temperature [°C] ................................................................................ -25 ... +80
Medium temperature [°C] ..................................................................................... -25 ... +80
Storage temperature [°C].................................................................................. -40 ... +100
EMC EN 61000-4-2 ESD: .......................................................................................4 / 8 KV
EN 61000-4-3 HF radiated: ............................................................................ 10 V/m
EN 61000-4-4 Burst: ...........................................................................................2 KV
EN 61000-4-6 HF conducted: ............................................................................ 10 V
*Encreased protection (IP 67) with accessories (Order no. E30038).

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11.1 Setting ranges
SP1 rP1
ΔP
min max min max
bar 4 400 2 398 1
PN4229 PN4227 PN4226 PN4224 PN4223 PN4222 PN4221 PN4220

PSI * 10 6 580 3 577 1

MPa 0.4 40.0 0.2 39.8 0.1
bar 2 250 1 249 1
PSI * 10 4 363 2 361 1
MPa 0.2 25.0 0.1 24.9 0.1
bar 1.0 99.9 0.5 99.5 0.1
PSI * 10 1 145 1 144 1
MPa 0.10 10.00 0.05 9.95 0.01
bar 0.2 25.0 0.1 24.9 0.1
PSI 4 363 2 362 1
MPa 0.02 2.50 0.01 2.49 0.01
bar 0.10 9.99 0.05 9.94 0.01
PSI 1 145 1 144 1
kPa 10 999 5 994 1
bar 0.02 2.50 0.01 2.49 0.01
PSI 0.4 36.3 0.2 36.2 0.1
kPa 2 250 1 249 1
mbar 10 999 5 994 1
PSI 0.1 14.6 0.1 14.5 0.1
kPa 1.0 99.9 0.5 99.4 0.1
bar -0.97 1.00 -0.99 0.98 0.01
inHg -29 30 -30 29 1
kPa -97 100 -99 98 1
ΔP = increments

16
12 Factory setting
Factory setting User setting
SP1 25% VMR
rP1 23% VMR
OU1 Hno
COF 0.0
dS1 0.0 UK

dr1 0.0
dAP 0.06
diS d2
Uni bAr / mbAr
VMR = final value of the measuring range

Technical data and further information at

www.ifm-electronic.com → Select your country → Data sheet direct:

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