Pressure and Level Transmitters Keramess KS 050D Series Hengesbach


The Hengesbach KS050D pressure transmitters is suitable for measuring the pressure and filling level in tanks and pipes. Its capacitative measurement cell and ceramic membrane makes the KS050D the ideal candidate for use in applications with abrasive media. KERAMESS pressure transmitters are designed for a measuring range of -1/0…1bar to -1/0…70bar. Special measuring ranges are also available.

The Hengesbach 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 Turn Down of up to 4 can be set using the full and empty adjustment. The large range of hygienic process connections such as e.g. the VARIVENT®, clamp DIN 32676, conical coupling with DIN 11851 groove union nut etc. guarantee the Hengesbach KS050D a variety of applications in the food industry and all other hygienic applications. A wide variety of process connections are also available for non-hygiene applications.

Their use in hygienic applications are assisted by the robust stainless steel field housing in the IP 67 and IP 69K, which withstands extremely aggressive cleaning techniques. The Hengesbach 050D pressure transmitters are highly-suited to use in applications which strict hygiene standards and basic requirements of functionality and accuracy

Features: Hengesbach 050D

  • mechanically robust, dry ceramic measuring cell, suitable for viscous and abrassive media
  • 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
  • simple parametering via 2-key concept and multi-colour status-LED
  • with hygienic and standard process connections as a fixed connection
  • for measurement of pressure and filling level in tanks and pipes with basic requirements


General details
Device type/measuring principle KS050D: capacitive
Measuring ranges KS050D
Standard nominal measuring range [bar] Relative OP Relative OP Absolute OP
00.05 4 40 60 ### 4
00.01 4 70 105 ### 6
OP = overload protection [bar] ±0.1 4 -1 to 1 10 ### 6
00.02 6 -1 to 2 18 1 10
Special measuring ranges are available on request. 00.04 6 -1 to 4 25 2 18
1 10 -1 to 10 40 4 25
All measurement cells are vacuum safe 2 18 -1 to 20 40 10 40
4 25 -1 to 40 60 20 40
10 40 -1 to 70 105 40 60
20 40 70 105
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 perform 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 -40 °C to +125 °C (140 °C for max. an hour)
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 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
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: Al2O3 (99%)
– Reference cable, 5-wire with reference tube: PUR (recommended: 80 m maximum)
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

Download Data Sheet: Pressure and Level Transmitter Keramess KS 050D Series

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