Hengesbach Pressure and Level Transmitter PZT050D Series

The PZT050D pressure transmitters are characterized by their modular process connection system and are suitable for measuring pressure and filling level in hygiene applications. The flush-mounted measuring cell with stainless steel membrane enables measur­ing ranges of -1/0…0.35bar to -1/0…100bar. The robust construction of the stainless steel field housing containing the protection classes IP 67 and IP 69K, makes the PZT050D pressure transmitter suitable for all common exterior cleaning procedures. The 050D series pressure transmitters are equipped with a micro processor controlled electronics system and an accuracy of ≤ ± 0.2% FS. They are parametrized with a simple and user-friendly operating concept via 2 keys and a multi-color status LED. A Turn Down of up to 4 can be set using the full and empty adjustment.

The process connection is characterized by the elastomer-free sealing cone, providing a metallic seal. A wide range of hygienic process connections are available as process connection adapters. This includes the female unions DIN 11864-1, VARIVENT®, DRD, DIN 32676 clamp etc.. The modular process connection system of the PZT050D pressure transmitter makes an active contribution to cost-reduction.


  • simple parametering via 2-key concept and multi-colour status-LED
  • accuracy ≤ ± 0,2%FS
  • modular process connection system with elastomic free sealing cone
  • output signal 4...20mA, TURNDOWN 4
  • measuring ranges from -1/0...0,35bar up to -1/0...100bar
  • easy to clean and high protection classes IP 67 und IP 69K
  • simple calibration, even without disconnection of the transmitter, through switchable power supply plant / calibrator supply
  • for measurement of pressure and filling level in tanks and pipes with basic requirements


General details            
Device type/measuring principlePZT050D: piezoresistive       


Measuring ranges      PZT050D   
Standard nominal measuring range [bar] RelativeOPAbsoluteOP RelativeOPAbsoluteOP
OP = overload protection [bar]0 to 0.351    -1/0 to 10300 to 1030
Special measuring ranges are available on request 0 to 130 to 13 -1/0 to 30900 to 3090
-1/0 to 2.580 to 2.58 -1/0 to 1002500 to 100250
 -1/0 to 5150 to 515     
All measurement cells are vacuum safe      
Setting the measuring rangesvia the 2 keys within the transmitter      
Setting rangesMeasuring range beginzero:0.....75%of the sensor's nominal measuring spanTD=4
 Measuring spanspan:25 to 100%of the sensor's nominal measuring span 
Burst pressure DIN16086>= 4-fold nominal measuring range      


Output signal2-wire:   4 to 20mA with a test circuit connection in the device   
Fault signal22mA         
Current limitation3.8mA and 21mA (normal operation, cannot be set)   

Measuring accuracy

Reference conditionsacc. to DIN IEC 770        
Linearity, hysteresis and repeatability acc. to the limit point method DIN IEC 770≤ ± 0.2% of the sensor nominal measuring range   
Activation time< 2 s (The device will carry out a self-test.)     
Setting time< 1s          
Long-time drift≤ 0.2% of the span per year       
Thermal hysteresis0.2% of the sensor's nominal measuring range / 10K (-20 to +80°C) from 4 bar 
 0.3% of the sensor's nominal measuring range / 10K (-20 to +80°C) up to 0.6 bar 
Conditions of use            
Installation position / calibration positionAny position / standing vertically       
Medium temperatureT1:-40 °C to +125 °C (140 °C for max. an hour)   
 T2:-40...+200°C (high-temperature version)     
Ambient storage temperature-40...+85°C (below -20 °C danger of cable breakage)   
Protection class acc. to EN60529IP 67 and IP 69K        
Electromagnetic compatibilityacc.to EN 61326-1        


Electrical connection- Standard:M16x1.5 cable screw connection, nickel-plated brass (stainless steel available on request)
- Optional:  M12x1 round plug-in connector, nickel-plated brass (stainless steel available on request)     
- Optional:  angle plug acc. to EN 175301-803         
- Optional:  reference cable          
Process connection- Membrane, flush-welded on the front, CrNiSt           
 - Elastomer-free sealing cone and M38x1.5 press screw           


Materials- Field housing / lid:CrNiSt 1.4301 (304)          
 - Electronics cast:Silgel          
 - Housing seal:FPM (Viton®)          
 - Pressure compensation element:Polyamide          
 - Process connection / connection adapter:CrNiSt 1.4404 (304)          
 - Process membrane:CrNiSt 1.4435/1.4404 (316L)          
 - Reference cable, 5-wire with reference tube:PUR (recommended: 80 m maximum)          
 - Centring O-ring:NBR 55          
Filling fluidSilicon oil (FDA)           
Display and operation            
DisplayMultiple-colour status LED           
Operation2-key concept           

Auxiliary energy resources

Power supply / burden12...30V DC, max. burden: (Vsupply – 12V) / 22mA          

Download Data Sheet: Pressure and Level Transmitter PZT050D Series

Ref: Hengesbach.com