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Precont PN4SC

Precont PN4SC

Pressure transmitter / Pressure switch with data memory for general applications Monitoring of absolute or relative pressure in gases, vapors, liquids and dust

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  • with ceramic front-flush or internal diaphragm

  • with TFT-display, 4-20mA or 0-10V output and up to 4 pnp switching outputs

  • Wide range of applications

  • Finely graded measuring ranges from 50 mbar up to 60 bar

  • Wide process temperature range –40°C to +125°C

  • Wide variety of process connections

  • High protection class IP65 / IP67

  • Wide environmental temperature range –20°C to +70°C

  • Ceramic front-flush or internal diaphragm

  • Highest accuracy – characteristic deviation to ≤ 0,05% of measuring range

  • Integrated evaluation electronic: Graphic display, keyboard; 4x PNP switch output; 1x current output 0/4…20mA – voltage output 0…10V; Measure data memory for more than 500.000 measuring values; Battery powered data logger function ; Bluetooth-Interface; Connector plug M12

  • High operating comfort: Enclosure and display rotatable for optimal operability in each installation position; High contrast high brightness TFT-LCD display for best readability; 3-key operation without additional assistance with tactile feedback; Easy handling by clear menu navigation; Extensive diagnostic functions for system analysis

Special features:

The device is an electronic pressure transmitter / pressure switch for monitoring, control as well as continuous measurement of pressures in gases, vapors, liquids and dusts.


Due to the device construction with measuring ranges from -1 bar to 60 bar (gauge), measuring ranges from 0 bar to 60 bar (absolute), measuring spans from 50 mbar to 60 bar, process temperatures from –40°C to +125°C, process materials Al2O3-ceramic / CrNi-steel as well as the availability of industrial standard process connections like thread ISO 228-1 (EN 837 manometer, Inner thread, front-flush), dairy coupling DIN 11851 (front-flush), Varivent® (front-flush), clamp ISO 2852 / BS 4825 / DIN 32676 (front-flush), DRD (front-flush) the device is especially suitable for the use for machinery and plant engineering, air-conditioning and refrigeration plant engineering, hydraulic and pneumatic systems, process industry, environmental technology, facility and building automation.

The device is suitable for demanding measuring requirements. 

Due to its high accuracy and the high flexibility of configuration, the device can be suited a wide variety of applications.

Through its optimized design, the front-flush process connection enables the cleanability of the wetted diaphragm to be integrated into the process.

The device is suitable for the use at CIP/SIP cleaning processes.

Low-maintenance and trouble-free pressure measurement is thus also guaranteed in critical applications with frequently changing media.

The robust design and the high-quality workmanship turns the device into a very high quality product, which even the most adverse environmental conditions cannot affect, whether low temperatures when used outdoors, high shock and vibration or aggressive media.

Technical data

Supply voltage:

Setting output 0/4...20 mA: 9..30 VDC, reverse polarity protected

Setting output 0…10 V: 14..30 VDC, reverse polarity protected


Analogue output

Operating range: current 0…20mA: 0…20,5mA, max. 22mA

current 4…20mA: 3,8…20,5mA, min. 3,6mA, max. 22mA

voltage 0…10V: 0 ... 10,5 V, max. 11 V

Permitted load: current 0…20mA / current 4…20mA: ≤ (US - 9V) / 22mA

voltage 0…10V: ≥ UOut / 3mA

Step response time: ≤ 15 ms (td = 0s)

Start-up time: ≤ 1s



Switch output PNP S1 / S2 / S3 / S4

Function: PNP switch to +L

Output current: IL 0… ≤ 200mA, current limited, short circuit protected

Step response time: ≤ 25 ms (td = 0s)

Switch cycles: ≥ 100.000.000


Bluetooth Interface

Version: Bluetooth 2.1 + EDR

Specification: Class 2

Transmit power: ≤ 2,5mW/4dBm

Range: ≤ 10m


Measuring accuracy

Characteristic deviation: ≤ ±0,05% / ±0,1% / ±0,2% FS

Long term drift: ≤ ±0,15% FS / year

Temperature deviation: Zero: ≤ ±0,015% FS / K / max. ±0,75 % (-20°C…+80°C)

Span: ≤ ±0,015% FS / K / max. ±0,5 % (-20°C…+80°C / > 0,4 bar)/  max. ±0,8 % (-20°C…+80°C / ≤ 0,4 bar)



Membrane (process wetted): Measuring range ≤ 1bar: Ceramic Al2O3  – 99,7% (SIP suitable)

Measuring range ≥ 1,6bar: Ceramic Al2O3  – 96% (SIP suitable)

Process connection 1/2/4/6/7/A/N/M/P/L/S/T: Ceramic Al2O3  – 99,9% (CIP/SIP suitable)

Process connection (process wetted): Steel 1.4404/316L / Steel 1.4571/316Ti

Terminal enclosure: CrNi-steel

Control panel surface: PES

Gaskets (process wetted): FPM – fluorelastomere (e.g. Viton®) / EPDM – ethylene-propylene-dienmonomere, FDA-listed / FFKM – perfluorelastomere (e.g. Kalrez®) / FFKM hd – perfluorelastomere high density


Environmental conditions

Environmental temperature: – 20°C...+70°C

Process temperature: – 40°C...+100°C resp. 125°C

Process pressure: 50 mbar up to 60 bar depending on type

Protection: IP68 EN/IEC 60529