Hydrocont HP4

Level sensor wir 22mm diameter, for hydrostatic level measurement with capacitive ceramic measuring cell

Output signal RS485 Modbus-RTU

  • Robust an precise ceramic cell
  • Integrated temperature measurement possible
  • Low energy consumption



The device Hydrocont HP4 is an electronic hydrostatic filling level transmitter for monitoring, control and continuous measurement of filling levels and temperatures.Due to its high accuracy and the digital adjustability by RS485 Modbus®-RTU the Hydrocont HP4 can be suited to a wide variety of applications.
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- resp. silicone-free version, a factory calibration with calibration certificate and a customer specific configuration resp. preset is also optionally available like a material test certificate EN10204 3.1 or a factory certifications for drink water suitability. Customer specific special versions can be realized short-term on request, e.g. special designs or other process materials.

Ueberspannungsschutz Bauform_schlank Genauigkeit_0_05 Temperaturmessung_integriert Ansprechzeit keramikmesszelle_robust
Input Pressure
Nom. pressure PN relative 0 bar … +0,1 bar up to 0 bar … +10 bar
Characteristic deviation ≤ ±0,05% FSO
≤ ±0,1% FSO
≤ ±0,2% FSO
Temperature deviation Tk Zero ≤ ±0,015% FSO/K
Tk Zero ≤ ±0,75% FSO
Tk Span ≤ ±0,015% FSO/K
Tk Span ≤ ±0,5% FSO (at ≥ 0,4 bar)
Tk Span ≤ ±0,8% FSO (at < 0,4 bar)
Time behavior T90 ≤ 2ms (td = 0s)
Input Temperature
Sensor type Pt1000 Class A
Characteristic deviation ≤ ±0,1K + 0,002 x [dt (25°C)]
Time behavior T90 ≤ 4s
Output RS485 Modbus®-RTU
Interface RS485, bidirectional
9600 Baud (4800…38400 Baud)
Time behavior ton ≤ 250ms (td = 0s)
Auxiliary power
Supply voltage Us
(polarity protected)
6 V…35 V DC
Overvoltage protection
Coarse protection 75 V / 10kA – wave 8/20µs
all lines to PE
Fine protection 36V
all lines to -L
Environmental conditions
Environmental temperature -20°C…+70°C
Protection class IP68 (EN/IEC 60529)
(Process wetted)
Ceramic Al2O3

Documentation german

User manual
Technical information

Documentation english

User manual
Technical information

Product configurator