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Precont PN4SM

Precont PN4SM

Pressure transmitter / Pressure switch with data memory for general applications up to 1000 bar Monitoring of absolute or relative pressure in gases, vapors, liquids and dust

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  • Digital Pressure Sensor with metal diaphragm up to 1000 bar -

  • Latest generation with a large display, analog and 4 pnp switching outputs

  • Wide range of applications

  • Finely graded measuring ranges from 400 mbar up to 1000 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

  • Metallic front-flush or internal diaphragm

  • Highest accuracy – characteristic deviation to ≤ 0,15% 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

Application description

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 1000 bar (gauge), measuring ranges from 0 bar to 1000 bar (absolute), measuring spans from 400 mbar to 1000 bar, process temperatures from –40°C to +125°C, process material CrNi-steel as well as the availability of industrial standard process connections like thread ISO 228-1 (EN 837 manometer, 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.


The front-flush diaphragm has been specifically designed for the measurement of viscous, paste-like, adhesive, crystallizing, particle-laden and contaminated media, which would clog the pressure channel of conventional process connections.


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.


A captive laser marking of the type label ensures the identifiability throughout the entire lifetime of the device.


Obviously is the optional marking of a measurement point designation resp. TAG, a customer label or of a neutral type label, of course also per laser marking.


A LABS-free resp. silicone-free version, a factory calibration with calibration certificate and a customer specific configuration resp. preset is also optionally available like factory certifications for drink water resp. food suitability.

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
: 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
: Bluetooth 2.1 + EDR
Specification: Class 2
Transmit power: ≤ 2,5mW/4dBm
Range: ≤ 10m Measuring accuracy
Characteristic deviation: ≤ ±0,15% / ±0,5% FS
Long term drift: ≤ ±0,2% FS / year
Temperature deviation: Measuring range ≤ 25 bar: ≤ ±0,02% FS / K (0…+80°C) / ≤ ±0,03% FS / K (-40…0°C / +80…+125°C)
Measuring range ≥ 40 bar: ≤ ±0,02% FS / K (-40…+100°C) / ≤ ±0,03% FS / K (+100…+125°C)

 (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: 400 mbar up to 1000 bar depending on type
Protection: IP68 EN/IEC 60529