Precont® MT

Analog pressure transmitter with metal strain gauge diaphragm

Integrated evaluation electronics in 2-wire technology with 4 … 20mA signal
Suitable for hygienic areas due to the EHEDG-compliant process connection

  • Metal membrane measuring cell for pressure ranges up to 1000 bar
  • Different connector versions available
  • 2-wire electronics 4 … 20mA or 3-wire 0 … 10V possible

 

Description

The device Precont® MT is an electronic pressure transmitter 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, environmental temperatures from –40°C to +100°C, process material CrNi-steel as well as the availability of industrial standard process connections like thread ISO 228-1 (EN 837 manometer) and thread ISO 228-1 (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 industrye, nvironmental technology and facility and building automation.

The device Precont® MT is suitable for demanding measuring requirements.

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 certification acc. to ATEX II 1 G Ex ia IIB/IIC Tx Ga allows the use in explosion hazardous areas.

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 the lowest temperatures when used outdoors, extreme shock and vibration stress 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.

 

Function

The device Precont® MT is mounted in the wall of the pressure container or of the pipe.

The system pressure is applied to the metallic membrane and causes there a deflection of the polysilicone resp. thin film strain gauge at the back side of the membrane. At measuring ranges of 0…25 bar and smaller, the pressure is transmitted by a pressure transmitting liquid to the polysilicone strain gauge.

The metallic membrane offers excellent characteristics like high pressure and pressure blow strength up to five times the nominal pressure, vacuum resistance, good reproducibility and hysteresis and also good long term stability and a low temperature influence.

The pressure dependent variation of the strain gauge output voltage is converted by the integrated evaluation electronic into a current signal 4…20 mA resp. voltage signal 0…10 V.

4_20mA_2_Draht Ansprechzeit Ex_Zulassung 0_10V_3_Draht Druck
Power supply
4…20mA 2-wire 10 V…30 V DC
0…10V 3-wire 14 V…30 V DC
Supply current
4…20mA 2-wire ≤ 30mA
0…10V 3-wire ≤ 6mA
Measurement accuracy
Characteristics deviation ≤ ±0,5% FS
Long term drift ≤ ±0,2% FS/year, not cumulative
Temperature deviation ≤ 25bar: ≤ ±0,02% FS/K (0°C…+80°C)
≤ 25bar: ≤ ±0,03% FS/K (-40°C…0°C / +80°C…+125°C)
≥ 40bar: ≤ ±0,02% FS/K (-40°C…+100°C)
≥ 40bar: ≤ ±0,03% FS/K (+100°C…+125°C)
Material
Membrane
(medium contact)
Steel 1.4571 (316Ti)
Steel 1.4542 (630)
Steel 1.4534 (SI13800)
Process connection
(medium contact)
Steel 1.4571 (316Ti)
Connection housing CrNi-Steel
Gaskets
(medium contact)
FPM – fluorelastomer (Viton®)
EPDM – ethylene-propylene-diene monomer
NBR – nitrile-butadiene rubber
Electrical connection part Device plug PUR
Device plug PA / Gasket NBR
Cable gland PA / Gasket CR / NBR / Cable sheath PE
Environmental conditions
Ambient temperature -40°C…+85°C
Process temperatures -40°C…+125°C
Process pressure ranges -1…+1000bar (depending on type)
Protection IP69K (EN/IEC 60529)
IP65 (EN/IEC 60529)
IP68 [≤ 10mWS] (EN/IEC 60529)

Documentation german

User manual
Datasheet

Documentation english

User manual
Datasheet

Product configurator