IFM PK752 Series Manuale utente

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Operating Instructions

Electronic pressure monitor

PK752x

707882 / 00 03 / 2020

UK

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2

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

3

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�

4

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�

5

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