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5

UK

3  Function and features

The pressure sensor detects the system pressure of machines and installations� 

Applications

Type of pressure: relative pressure 

Order no.

Measuring range

Pressure resistance 

(max. permissible 

pressure)*

Bursting pressure

bar

PSI

bar

PSI

bar

PSI

PY2954

-1���10

-14�5���145

75

1088

150

2 175

* in case of static overpressure
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 destro-

yed� NOTE: Risk of injury!
Pressure Equipment Directive (PED): The units comply with section 3, ar-

ticle (3) of the Directive 97/23/EC and are designed and manufactured 

for media of fluid group 2 (stable gases and non-superheated liquids) in 

accordance with the sound engineering practice�

4  Function

4.1  Evaluation

•  The unit shows the current system pressure on its display�

•  It generates 2 output signals according to the parameter setting�

OUT1

• switching signal for pressure limit values�

OUT2

• switching signal for pressure limit values�

• analogue signal for pressure (4���20 mA or 0���10V)�

Содержание PY2954

Страница 1: ...Operating instructions Combined pressure sensor PY2954 UK 80007012 00 12 2013...

Страница 2: ...2 1 Setting the output function 14 9 2 2 Setting the switching limits 14 9 2 3 Scaling the analogue value 14 9 3 User settings optional 15 9 3 1 Setting the unit of measurement for the system pressur...

Страница 3: ...tion result Designation of buttons switches or indications Cross reference Important note Non compliance can result in malfunctions or interference 10 2 Fault indication 17 11 Technical data and scale...

Страница 4: ...antee the correct condition of the device for the operating time it is necessary to use the device only for media to which the wetted materials are sufficiently resistant Technical data sheet The resp...

Страница 5: ...d bursting pressure must not be exceeded Even if the bursting pressure is exceeded only for a short time the unit can be destro yed NOTE Risk of injury Pressure Equipment Directive PED The units compl...

Страница 6: ...2 Window function normally closed OUx Fnc fig 2 The width of the window can be set by means of the distance between SPx and rPx SPx maximum value rPx minimum value 1 2 P system pressure HY hysteresis...

Страница 7: ...indicated System pressure above the measuring range output signal 10 V Current output 4 20 mA Factory setting Measuring range scaled P system pressure MEW final value of the measuring range In the se...

Страница 8: ...ional and international regulations for the installation of electrical equipment must be adhered to Voltage supply to EN50178 SELV PELV Disconnect power Connect the unit as follows 2 x p switching 2 x...

Страница 9: ...or units with 4 adjustable units of measurement LED 7 LED 8 switching state of the respective output 9 Alphanumeric display 4 digits Indication of the current system pressure Indication of the paramet...

Страница 10: ...10 8 Menu 8 1 Menu structure...

Страница 11: ...h Analogue signal for the current system pressure 4 20 mA I or 0 10 V U ASP Analogue start point for the system pressure measured value at which 4 mA or 0 V are output AEP Analogue end point for the s...

Страница 12: ...e 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 Acknowledgement of the parameter value Press Mode Enter briefly Th...

Страница 13: ...EF button If menu level 2 is protected by an access code the input field for the code no is activated Enter valid code no Locking unlocking The unit can be locked electronically to prevent unintention...

Страница 14: ...nc window function normally closed I current signal proportional to the pressure 4 20 mA U voltage signal proportional to the pressure 0 10 V 9 2 2 Setting the switching limits Select SP1 SP2 and set...

Страница 15: ...hold rd1 rd2 rd3 rPh Display like d1 d2 d3 Ph rotated by 180 OFF The display is deactivated in the operating mode 9 3 3 Zero point calibration Select COF and set a value between 5 and 5 of the final v...

Страница 16: ...requency and dAP fmax 1 2dAP 9 3 7 Setting the damping for the analogue output Select dAA set value between 0 01 4 00 s at 0 00 dAA time is not active dAA value response time between pressure change a...

Страница 17: ...ad pressure measuring range exceeded UL underpressure range measuring range below the minimum value SC1 short circuit in OUT1 SC2 short circuit in OUT2 SC short circuit in both switching outputs The o...

Страница 18: ...2 73 VMR ASP 1 bar AEP 100 VMR COF 0 dS1 0 0 dr1 0 0 dS2 0 0 dr2 0 0 P n PnP dAP 0 06 dAA 0 10 diS d2 Uni bAr mbAr the indicated percentage of the final value of the measuring range of the correspondi...

Страница 19: ...19 UK...

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