Effective and easy measurement at fish farms

Measuring water pH is an important water quality parameter. The XB2-S probe is used to measure pH in the standard range (0-14 pH), for fresh water and salt water applications. It consists of a stainless-steel head with the option of replaceable electrodes, a body with integrated electronics and a durable cable.

team illustration

Watch video about probe calibration

The calibration and setup processes for your probes are intended to be as straightforward as possible. You will instantly understand how to correctly configure your probes so that they will precisely match the conditions you will need to have for the greatest aquaculture environment! You will be able to handle it on your own after watching this brief and simple video.

Play video on Youtube


Every fish species requires a specific pH value for its optimum development. A rising pH causes NH4+ to be converted to toxic undissociated NH3, which results in fish mortality. Depending on the species of fish being farmed, XB2-S probe measurements can be used to ensure optimum pH value. Intermittent water pollution can also be detected if this probe is located at the inflow. The probe uses an external supply tank of gel electrolyte and a multi-level reference system, which prevents the probe from being poisoned by sea water and extends its service life.

  • 01 Highly durable sheath
  • 02 Protection of electrodes against growth of biological encrustation
  • 03 Nano-filter preventing growth of microorganisms
  • 04 External gel electrolyte supply tank
  • 05 Minimum operating costs
  • 06 Multi-level reference system



Basic technical parameters

Power supply external source 18 ÷ 35V DC/ 30 mA
Signal output 4 ÷ 20 mA + MODBUS
Temperature measuring range -20 ÷ 120 °C
Temperature measurement accuracy ± 0,2 °C; ± 1 dig.
Measuring range - pH; mV 1,000 ÷ 14,000 pH; -1200,0 ÷ 1200,0 mV
Measuring accuracy - pH; mV ± 0,01; ± 0,01 %; ± 1 dig.
Input resistance for pH sensor 1012 Ω
Temperature compensation automatic, manual -10 ÷ 110 °C
Operating temperature range 0 ÷ 50 °C
Storage temperature range -20 ÷ 70 °C
Pressure range 0 to 1 bar (0 ÷ 10 m water column)
Temperature sensor Ni 1000
Protection rating IP 68
Dimensions (probe) 270 x 36 mm
Dimensions (box) 320 x 200 x 75 mm
Material stainless steel 1,4404; PVC-U black; PUR (cable)
Maximum immersion depth 30 m

Fish farm automation

Join the worldwide portfolio of our customers and partners, that rely on our technology

Start your fish farm automation
Fish farm automation technlogy