Safety Pressure switch – P1360

Sheet No.: 2-300GB

Application: Pressure Equipment Directive − PED

The European Community has decided to pass a set of rules called the Pressure Equipment Directive – PED. These rules state that all kind of pressurized equipment must have a safety system that prevents the pressure to exceed the Max Allowable Operating Pressure that

the equipment has to be approved for. In the past the way of preventing the pressure to rise was to either install a pressure relief valve or a pressure bypass valve

SwipGuard – the intelligent replacement of relief valves and spring claps.

  • Higher security according to PED
  • Cost savings because of no spillage of media
  • Improved hygienic as a result of better and efficient cleaning
  • Easy cleaning process due to efficient resource utilization

Description:

TEMPRESS has developed a new device – SwipGuard − that can be installed in the process line and give an emergency signal to either a pump or an electrical bypass valve. The SwipGuard has been tested and approved according to the requirements in the Standard by TÜV.

SwipGuard acts as an ordinary switch in the security circuit and is set to break the circuit by a preset pressure.

SwipGuard has an internal detector to survey if the bellow is leaking. In that case the sensor will give a signal that can operate a surveillance system in a PLC or PC monitoring.

SwipGuard is designed to meet the new PED zone I, II, III and IV requirements for emergency surveillance in pressurized piping systems.

SwipGuard is available in an industrial ver- sion for direct mounting by thread and in a special hygienic version with diaphragm seal for sanitary industries. Which allow it to be used for all kind of process equipment.

SwipGuard system consists of two independent and redundant switches.

SwipGuard at APV/SPX

This measuring device is approved on the same level as safety valves and complies with the hygiene requirements that apply to food industry equipment. “It’s precisely this approval by the relevant authorities that is absolutely crucial for us,” emphasises Mr Schubert and points out: “This is a unique product  that I’d love to have made myself. However, it was Tem- press that got the idea, and they’re also the ones with the expertise to put it into practice.”pic-p1360-wolfgang-schubert

P1360 SPECIFICATIONS
Standard ranges Ver. I              Ver. II
                                                                                                     1 – 10 bar     7 – 35 bar
Repeatability ± 0.5% FS (typ.)

± 1% FS (max.allowable)

Response time < 4 ms
Max. switch frequency 30/min. (0.5 Hz)
Life time Mechanical

Electrical at max. contact load

> 100,000 cycles at 70 °C

> 1,000,000 cycles

Pressure Ver. I              Ver. II
Bellow Max. operating pressure 10 bar           35 bar
Test pressure 15 bar           53 bar
Burst pressure > 40 bar        > 140 bar
Electrical specifications
Switches Contact arrangement SPDT
Contact load

 

Leakage signal Capacitive

DC resistive

DC inductive

NPN

5 A, 24V

4 A, 24V

max. 100 mA, 24 V

Mechanical specifications
Pressure connection Thread or Chemical seal Dimension & design acc. to order
Electrical connection Plug DIN43650-A, Pg9 / Pg11 / Pg13,5
Wetted parts Housing AISI316
Material internal Diaphragm FPM
Bellow Bronze
O-ring NBR or FPM
Wetted parts

Material external

Diaphragm

Thread

AISI316

AISI316 or bronze

Enclosure material Housing

Plug fixture

AISI304

Glass filled polyamid, PA 6.6

Weight 0.4 kg
Environmental conditions
Temperature:

Operation

Transport

 

Only with liquid

 

-10 to + 70°C

-40 to + 90°C

Enclosure IP 65, IEC 529
Vibration stability, Sinusoidal 4 g, 25 Hz – 100 Hz IEC 60068-2-6
Hysteresis Typical 5-10 % Not less than 3% T20

Not less than 5% T70