IFM PK752 Series User manual

Operating Instructions
Electronic pressure monitor
PK752x
707882 / 00 03 / 2020
UK
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1 Preliminary note
1.1 Symbols used
►Instruction
> Reaction, result
[…] Designation of keys, buttons or indications
→Cross-reference
Important note
Non-compliance may result in malfunction or interference
Information
Supplementary note
Contents
1 Preliminary note���������������������������������������������������������������������������������������������������2
1�1 Symbols used ������������������������������������������������������������������������������������������������2
2 Safety instructions �����������������������������������������������������������������������������������������������2
3 Function and features������������������������������������������������������������������������������������������4
4 Installation������������������������������������������������������������������������������������������������������������4
5 Electrical connection��������������������������������������������������������������������������������������������4
6 Setting / Operation�����������������������������������������������������������������������������������������������5

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UK
2 Safety instructions
• The device described is a subcomponent for integration into a system�
- The manufacturer is responsible for the safety of the system�
- The system manufacturer undertakes to perform a risk assessment and to
create documentation in accordance with legal and normative requirements
to be provided to the operator and user of the system� This documentation
must contain all necessary information and safety instructions for the operator,
the user and, if applicable, for any service personnel authorised by the
manufacturer of the system�
• Read this document before setting up the product and keep it during the entire
service life�
• The product must be suitable for the corresponding applications and
environmental conditions without any restrictions�
• Only use the product for its intended purpose (→ Functions and features).
• Only use the product for permissible media (→ Technical data).
• If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur�
• The manufacturer assumes no liability or warranty for any consequences
caused by tampering with the product or incorrect use by the operator�
• Installation, electrical connection, set-up, programming, configuration, operation
and maintenance of the product must be carried out by personnel qualified and
authorised for the respective activity�
• Protect units and cables against damage�

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3 Function and features
The pressure monitor detects the system pressure and generates two output
signals (2 NO with independently adjustable switch points:
• In case of increasing pressure OUT1 (OUT2) closes when the Set1 (Set2)
value is reached�
• In case of decreasing pressure OUT1 (OUT2) opens when the value „Set1
(Set2) minus hysteresis“ is reached.
The hysteresis is fixed (2% of value of measuring range).
Applications
Type of pressure: relative pressure
Order no. Measuring range Permissible
overload pressure
Bursting
pressure
bar PSI bar PSI bar PSI
PK7520 0���400 0���5 800 600 8 700 1 600 23 200
PK7521 0���250 0���3 625 400 5 800 1 000 14 500
PK7522 0���100 0���1 450 200 2 900 1 000 14 500
PK7523 0���25 0���363 60 870 500 7523
PK7524 0���10 0���145 25 362 300 4 350
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)!
If the cable length exceeds 30 m or if used outside buildings, there is a risk
of overvoltage pulses from external sources� We recommend to use the
unit in protected operating environments and to limit overvoltage pulses to
max� 500 V�
4 Installation
Before mounting and removing the sensor, make sure that no pressure is
applied to the system�

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UK
5 Electrical connection
The unit must be connected by a suitably qualified electrician�
Voltage supply to EN50178, SELV, PELV�
►Disconnect power before connecting the unit�
6 Setting / Operation
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Pin 4 = OUT1 / Pin 2 = OUT2
1: locking ring
2: setting rings (manually adjustable after unlocking)
3: yellow LED: Set1 value reached, OUT1 = ON
4: process connection G¼ A; tightening torque 25 Nm
5: setting marks
6: yellow LED: Set2 value reached, OUT2 = ON
7: sealing FPM / DIN 3869-14
8: internal thread M5
• To obtain the setting accuracy: Set the rings to the minimum value, then set the
requested value�
More information at www�ifm�com