Hengesbach Pressure and Level Transmitter TPF0505D Series

The TPF050D pressure transmitter is suitable for measuring of the pressure and filling level in pipes and tanks, even with small nominal diameters. Depending on the process connection, the flush-mounted measuring cell with stainless steel membrane enables measuring ranges of -1/0…0.35bar to -1/0…100bar. The robust stainless steel field housing and the checked protection classes IP 67 and IP 69K withstand all aggressive and residue-free cleaning procedures such as those required in the food and pharmaceuticals industry.

The 050D series pressure transmitters are equipped with a micro-processor controlled electronics system and an accuracy of ≤ ± 0.2% FS. They are parametrised with a simple and user-friendly operating concept via 2 keys and a multi-colour status LED. A TurnDown of up to 4 can be set using the full and empty adjustment. A wide range of hygienic and non-hygienic process connections is available for the TPF050D. The process connection adapters available include: ISO 228 G1“ screw-in threads with an elastomer-free sealing cone and press screw, conical couplings or DIN 11851, VARIVENT® with Ø 50mm or Ø 68mm, DRD. Customer-specific solutions are also possible.


  • output signal 4…20mA, TURNDOWN 4
  • accuracy ≤ ± 0,2%FS
  • simple calibration, even without disconnection of the transmitter, through switchable power supply plant / calibrator supply
  • with hygienic and standard process connections as a fixed connection
  • simple parametering via 2-key concept and multi-colour status-LED
  • vacuum and overload safe
  • for measurement of pressure and filling level in tanks and pipes with basic requierments
  • easy to clean and high protection classes IP 67 und IP 69K


General details
Device type/measuring principle TPF050D: piezoresistive
Measuring ranges TPF050D
Standard nominal measuring range [bar] Relative OP Absolute OP Relative OP Absolute OP
OP = overload protection [bar] 0 to 0.35 1 -1/0 to 10 30 0 to 10 30
Special measuring ranges are available on request. 0 to 1 3 0 to 1 3 -1/0 to 30 90 0 to 30 90
-1/0 to 2.5 8 0 to 2.5 8 -1/0 to 100 250 0 to 100 250
All measurement cells are vacuum safe -1/0 to 5 15 0 to 5 15
Setting the measuring ranges via the 2 keys within the transmitter
Setting ranges Measuring range begin zero: 0 to 75% of the sensor’s nominal measuring span TD=4
Measuring span span: 25 to 100% of the sensor’s nominal measuring span
Burst pressure DIN16086 >= 4-fold nominal measuring range
Output signal 2-wire:   4 to 20mA with a test circuit connection in the device
Fault signal 22mA
Current limitation 3.8mA and 21mA (normal operation, cannot be set)
Measuring accuracy
Reference conditions acc. 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 hysteresis 0.2% 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 position Any position / standing vertically
Medium temperature T1: -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 EN60529 IP 67 and IP 69K
Electromagnetic compatibility acc.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 – All standard flush-mounted process connections and those commonly used by the manufacturer
– Membrane, flush-welded on the front, CrNiSt, other materials available on request
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)
Filling fluid Silicon oil (FDA)
Display and operation
Display Multiple-colour status LED
Operation 2-key concept
Auxiliary energy resources
Power supply / burden 12…30V DC, max. burden: (Vsupply – 12V) / 22mA
Accessories 050D
Certificates Calibration certificate
Declaration of conformity
Material certificate acc. to EN 10204

Download Data Sheet: Pressure and Level Transmitter TPF0505D Series

Ref: Hengesbach.com

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